{"id":148,"date":"2025-05-24T19:55:31","date_gmt":"2025-05-24T11:55:31","guid":{"rendered":"https:\/\/codecraft.xin\/?p=148"},"modified":"2025-05-24T19:55:32","modified_gmt":"2025-05-24T11:55:32","slug":"stm32%e5%af%84%e5%ad%98%e5%99%a8%e5%92%8chal%e5%ba%93%e5%bc%80%e5%8f%91%e5%ad%a6%e4%b9%a0%ef%bc%8c%e5%8f%8a%e4%b8%80%e4%ba%9b%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9","status":"publish","type":"post","link":"https:\/\/codecraft.xin\/?p=148","title":{"rendered":"STM32\u5bc4\u5b58\u5668\u548chal\u5e93\u5f00\u53d1\u5b66\u4e60\uff0c\u53ca\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"\n

\u5916\u90e8\u4e2d\u65ad<\/h2>\n\n\n\n

\u5916\u90e8\u4e2d\u65ad\u7684\u5bc4\u5b58\u5668\u914d\u7f6e\uff1a<\/p>\n\n\n\n

#include \"key.h\"\nvoid Key_Init(void){\n\n    \/\/\u6253\u5f00gpiof\u548cafio\u7684\u65f6\u949f\n    RCC->APB2ENR |= RCC_APB2ENR_IOPFEN;\n    RCC->APB2ENR |= RCC_APB2ENR_AFIOEN;\n    \/\/\u914d\u7f6e\u8f93\u5165\u6a21\u5f0f\uff0c\u4e0a\u4e0b\u62c9\n    GPIOF->CRH &= ~GPIO_CRH_MODE10;\n    GPIOF->CRH |= GPIO_CRH_CNF10_1; \n    GPIOF->CRH &= ~GPIO_CRH_CNF10_0;\n    \/\/\u7ed9\u4e0b\u62c9\uff0c\u521d\u59cb\u503c\u4e3a\u4f4e\u7535\u5e73\n    GPIOF->ODR &= ~GPIO_ODR_ODR10;\n    \/\/\u914d\u7f6eafio\u7684\u5f15\u811a\u590d\u7528\uff0c\u544a\u8bc9\u6765\u4e2d\u65ad\u7684\u662f\u5177\u4f53\u54ea\u4e2aGPIOx\n    AFIO->EXTICR[2] |= AFIO_EXTICR3_EXTI10_PF;\n    \/\/\u914d\u7f6eexti\uff0c\u7684\u89e6\u53d1\u65b9\u5f0f\u548c\u662f\u5426\u4e2d\u65ad\u5c4f\u853d\n    EXTI->RTSR |= EXTI_RTSR_TR10;\n    EXTI->IMR |= EXTI_IMR_MR10;\n    \/\/NVIC\uff0c\u8fd9\u91cc\u7528\u7684\u5e93\u51fd\u6570\uff0c\u81ea\u5df1\u624b\u52a8\u914d\u7f6e\u5bc4\u5b58\u5668\u4e5f\u53ef\u4ee5\uff0c\u5c31\u662f\u6709\u70b9\u590d\u6742\uff0c\u76f4\u63a5\u8c03\u5e93\n    NVIC_SetPriorityGrouping(3);\n    NVIC_SetPriority(EXTI15_10_IRQn,15);\n    NVIC_EnableIRQ(EXTI15_10_IRQn);\n}\n\/\/\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\nvoid EXTI15_10_IRQHandler(void){\n    \/\/\u5148\u6e05\u9664\u4e2d\u65ad\u6302\u8d77\u6807\u5fd7\u4f4d\n    EXTI->PR |= EXTI_PR_PR10;\n    \/\/\u6d88\u6296\n    Delay_ms(10);\n    if ((GPIOF->IDR &= GPIO_IDR_IDR10) != RESET){\n        LED_Toggle(LED1);\n    }\n}\n<\/code><\/pre>\n\n\n\n
hal\u5e93<\/p>\n\n\n\n
void EXTI15_10_IRQHandler(void)\n{\n  \/* USER CODE BEGIN EXTI15_10_IRQn 0 *\/\n\n  \/* USER CODE END EXTI15_10_IRQn 0 *\/\n  HAL_GPIO_EXTI_IRQHandler(KEY1_Pin);\n  \/* USER CODE BEGIN EXTI15_10_IRQn 1 *\/\n\n  \/* USER CODE END EXTI15_10_IRQn 1 *\/\n}\n\n\/* USER CODE BEGIN 1 *\/\nvoid HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){\n  \/\/\u662f\u5426\u662fexti10\u4f20\u6765\u7684\u4e2d\u65ad\u8bf7\u6c42\n  if(GPIO_Pin == KEY1_Pin){\n    \/\/\u6e05\u9664\u4e2d\u65ad\u6302\u8d77\u4f4d,hal\u5df2\u7ecf\u5728\u5e95\u5c42\u9ed8\u8ba4\u6e05\u9664\u4e86\n  HAL_Delay(10);\n  if (HAL_GPIO_ReadPin(KEY1_GPIO_Port,KEY1_Pin) == GPIO_PIN_SET)\n  {\n    HAL_GPIO_TogglePin(LED1_GPIO_Port,LED1_Pin);\n    \n  }\n   \n  }\n}\n\/* USER CODE END 1 *\/\n<\/code><\/pre>\n\n\n\n
\u4e0a\u9762\u7684\u4ee3\u7801\u662f\u5728hal\u5e93\u91cc\u9762\u7684\uff0c\u5728EXTI15_10_IRQHandler\u4e2d\u6709\u4e2a<\/p>\n\n\n\n
HAL_GPIO_EXTI_IRQHandler\u91cc\u9762\u6709\u4e2a\u56de\u8c03\u51fd\u6570\uff0c\u5e76\u4e14\u81ea\u52a8\u6e05\u9664\u4e86\u6302\u8d77\u5bc4\u5b58\u5668\uff0c\u56de\u8c03\u51fd\u6570\u5c31\u662f\u53ef\u4ee5\u91cd\u81ea\u5b9a\u4e49\uff0c\u5e76\u4e14\u4ed6\u80fd\u63a5\u6536\u4e00\u4e2a\u5f15\u811a\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5355\u72ec\u5199\u51fa\u6765\uff0c\u5224\u65ad\u5f15\u811a\u5230\u5e95\u662f\u54ea\u4e2a\uff0c\u7136\u540e\u8fdb\u884c\u6267\u884c\u4e2d\u65ad\u4ee3\u7801\u3002<\/p>\n\n\n\n
\u4e32\u53e3<\/h2>\n\n\n\n
\u5728\u4e32\u53e3\u4e2d\u6211\u4eec\u5355\u7247\u673a\u662fusart\uff0c\u5728\u7535\u8111\u4e0a\u7684\u4e32\u53e3\u4e00\u822c\u662fRS232\u548cRS485\uff0c\u5176\u5b9e\u5e95\u5c42\u5c31\u662fusart\u53ea\u662f\uff0c\u589e\u52a0\u4e86\u7535\u6c14\u6807\u51c6\uff0crs485\u66f4\u662f\u53d1\u9001\u4fe1\u53f7\u53d8\u4e3a\u4e86\u4e24\u6839\u7ebf\uff0c\u5dee\u5206\u7535\u8def\uff0c\u6297\u5e72\u6270\u80fd\u529b\u53d8\u5f97\u66f4\u5f3a\u4e86\uff0c\u4f46\u662f\u53d8\u4e3a\u534a\u53cc\u5de5\u4e86\uff0c\u5982\u679c\u5206\u522b\u4e24\u6839\u7ebf\u53d1\u548c\u6536\uff0c\u4e00\u5171\u5c31\u56db\u6839\u7ebf\u4e86\uff0c\u5c31\u662fRS422\u4e86<\/p>\n\n\n\n
\u6ce2\u7279\u7387\u7684\u4ea7\u751f<\/h3>\n\n\n\n
25.3.4<\/p>\n\n\n\n
\u5047\u8bbe\u6211\u4eec\u8981\u4e00\u4e2a115200\u7684\u6ce2\u7279\u7387<\/p>\n\n\n\n
72000000\/(115200*6)=39.0625\n39\u768416\u8fdb\u5236\u4f4d0x27\uff08\u524d12\u4f4d\uff09\n0.0625*16 = 1\uff08\u540e\u56db\u4f4d\u5c0f\u6570\u90e8\u5206\uff09\n<\/code><\/pre>\n\n\n\n
\"image-20250323123212286\"\/<\/div><\/figure>\n\n\n\n
\u8f6e\u8be2\u7684\u65b9\u5f0f<\/p>\n\n\n\n
\u5bc4\u5b58\u5668\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
#include \"usart.h\"\nvoid USART_Init(void){\n    \/\/\u914d\u7f6e\u65f6\u949f\n    RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;\/\/\u6253\u5f00gpio\n    RCC->APB2ENR |= RCC_APB2ENR_USART1EN;\/\/\u6253\u5f00\u4e32\u53e31\n    \n    \/\/gpio\u5de5\u4f5c\u6a21\u5f0f\n    \/\/pa9:\u590d\u7528\u63a8\u633d\u8f93\u51fa,CNF-10,MODE-11;\n    \/\/PA10:\u6d6e\u7a7a\u8f93\u5165\uff0cCNF-01,MODE-00;\n    GPIOA->CRH |=GPIO_CRH_MODE9;\n    GPIOA->CRH |=GPIO_CRH_CNF9_1;\n    GPIOA->CRH &= ~GPIO_CRH_CNF9_0;\n\n    GPIOA->CRH &=~GPIO_CRH_MODE10;\n    GPIOA->CRH &=~GPIO_CRH_CNF10_1;\n    GPIOA->CRH |= GPIO_CRH_CNF10_0; \n\n    \/\/\u4e32\u53e3\u914d\u7f6e\n    \/\/\u6ce2\u7279\u7387\u8bbe\u7f6e\n    USART1->BRR = 0x271;\n    \/\/\u4f7f\u80fd\n    USART1->CR1 |= (USART_CR1_UE | USART_CR1_TE | USART_CR1_RE);\n    \/\/\u5176\u4ed6\u914d\u7f6e\n    USART1->CR1 &=~USART_CR1_M;\n    USART1->CR1 &=~USART_CR1_PCE;\n    USART1->CR2 &=~USART_CR2_STOP;\n}\nvoid USART_SendChar(uint8_t ch){\n    \/\/\u5224\u65adsr\u91cc\u7684txe\u662f\u5426\u4e3a1\n    while ((USART1->SR & USART_SR_TXE) == 0)\n    {}\n    \/\/\u5411DR\u5199\u5165\u65b0\u7684\u8981\u53d1\u9001\u7684\u6570\u636e\n    USART1->DR = ch;\n\n    \n}\nuint8_t USART_ReceiveChar(void){\n    while ((USART1->SR & USART_SR_RXNE) == 0)\n    {}\n    return USART1->DR;\n    \n}\n<\/code><\/pre>\n\n\n\n
\u53d1\u9001\u63a5\u6536\u5b57\u7b26\u4e32<\/p>\n\n\n\n
void USART_SendString(uint8_t *str , uint8_t size){\n    for (uint8_t i = 0; i < size; i++)\n    {\n        USART_SendChar(str[i]);\n    }\n    \n}\n\nvoid USART_ReceiveString(uint8_t buffer[],uint8_t *size){\n    uint8_t i =0;\n    while (1)\n    {\n        \n        while ((USART1->SR & USART_SR_RXNE) == 0)\n        {\n            if ((USART1->SR & USART_SR_IDLE))\n            {\n                *size = i;\n                return;\n            }\n            \n        }\n        buffer[i] = USART1->DR;\n        i++;\n    }\n    \n}\n<\/code><\/pre>\n\n\n\n
hal\u5e93<\/p>\n\n\n\n
  uint8_t buffer[100] = {0};\n  while (1)\n  {\n    if (HAL_UART_ == HAL_OK)\n    {\n      HAL_UART_Transmit(&huart1,buffer,10,1000);\n    }\n<\/code><\/pre>\n\n\n\n
\u5b9a\u957f\u5b57\u7b26\u4e32\u53d1\u9001<\/p>\n\n\n\n
\u53d8\u957f\u5b57\u7b26\u4e32\u7684\u53d1\u9001<\/p>\n\n\n\n
HAL_UARTEx_ReceiveToIdle\n<\/code><\/pre>\n\n\n\n
\u4e00\u76f4\u63a5\u6536\u5230\u7a7a\u95f4\u5e27\u4e3a\u6b62<\/p>\n\n\n\n
  uint8_t buffer[100] = {0};\n  uint16_t size =0;\n  while (1)\n  {\n    if (HAL_UARTEx_ReceiveToIdle(&huart1,buffer,100,&size,HAL_MAX_DELAY) == HAL_OK)\n    {\n      HAL_UART_Transmit(&huart1,buffer,size,HAL_MAX_DELAY);\n    }\n }\n<\/code><\/pre>\n\n\n\n
printf\u91cd\u5b9a\u5411<\/h2>\n\n\n\n
\u6253\u5370\u5728\u4e32\u53e3<\/p>\n\n\n\n
printf\u5e95\u5c42\u4e3b\u8981\u662ffputc\u8fd9\u4e2a\uff0c\u66f4\u6539\u4e00\u4e0b\u5c31\u53ef\u4ee5\u91cd\u5b9a\u5411<\/p>\n\n\n\n
\u53bbkeil\u91cc\u9762\u9009\u62e9\uff0c\u8fd9\u4e2a\u4e00\u5b9a\u8981\u52fe\u9009\uff0c\u624d\u80fd\u4f7f\u7528stdio.h<\/p>\n\n\n\n
\"image-20250324133152317\"\/<\/div><\/figure>\n\n\n\n
\\\\\u91cd\u5199fputs\u51fd\u6570,usart.c\nint fputc(int ch,FILE * file){\n    USART_SendChar(ch);\n    return ch;\n}\n<\/code><\/pre>\n\n\n\n
\\\\main.c\n\tprintf(\"c=%d\\n\",c);\n\tprintf(\"hello,world\\t\\n\");\n<\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u5bc4\u5b58\u5668\u7684\u6253\u5370\u65b9\u6cd5\u3002<\/p>\n\n\n\n
hal\u5e93print\u91cd\u5b9a\u5411<\/h2>\n\n\n\n
\/\/usart.h\u540c\u6837\u8981\u5f15\u5165stdio.h\n    int fputc(int ch,FILE * file){\n      HAL_UART_Transmit(&huart1,(uint8_t *)&ch,1,1000);\n      return ch;\n    }\n<\/code><\/pre>\n\n\n\n
\u5c0ftick<\/h2>\n\n\n\n
\u65e2\u8981\u6536\u53c8\u8981\u53d1\u7684\u65f6\u5019\uff0cGPIO\u5fc5\u987b\u914d\u7f6e\u4e3a\u590d\u7528\u8f93\u51fa\u6a21\u5f0f\uff08\u63a8\u633d\u6216\u8005\u5f00\u6f0f\uff09\uff0c\u6bd4\u5982I2C<\/p>\n\n\n\n
I2C\u534f\u8bae<\/h2>\n\n\n\n
\u534f\u8bae\u4e0a\u662f<\/p>\n\n\n\n
\u9ad8\u4f4d\u5148\u884c\uff0c\u8ddfusart\u4e0d\u4e00\u6837\uff0cusart\u662f\u4f4e\u4f4d\u5148\u884c<\/p>\n\n\n\n
\"image-20250324151306422\"\/<\/div><\/figure>\n\n\n\n
\u5f00\u59cb\u4e86\u540e\uff0c\u7b2c\u4e00\u6b65\u5148\u4f20\u9001\u8bbe\u5907\u7684\u5730\u5740\uff0c\u4f46\u662f\u5728\u6700\u540e\u4e00\u4f4d\u8fd8\u8981\u6709\u65b9\u5411<\/p>\n\n\n\n
\u8f6f\u4ef6\u6a21\u62dfIC2\u534f\u8bae\uff0c\u53ea\u6709\u5bc4\u5b58\u5668\u80fd\u505a<\/h3>\n\n\n\n
\u6e05\u9664\u7f13\u51b2\u533a\u7684\u51fd\u6570<\/p>\n\n\n\n
meset(buffer,0,sizeof(buffer));\n<\/code><\/pre>\n\n\n\n
\u5b9e\u73b0\u5f88\u9ebb\u70e6\uff0c\u8fd8\u662f\u7528\u786c\u4ef6\u5427\uff0c\u89e3\u653ecpu<\/p>\n\n\n\n
\\\\i2c.c\n#include \"i2c.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid I2C_Init(void)\n{\n    \/\/ 1. \u914d\u7f6e\u65f6\u949f\n    RCC->APB2ENR |= RCC_APB2ENR_IOPBEN;\n    RCC->APB1ENR |= RCC_APB1ENR_I2C2EN;\n\n    \/\/ 2. GPIO\u5de5\u4f5c\u6a21\u5f0f\u914d\u7f6e\uff1a\u590d\u7528\u5f00\u6f0f\u8f93\u51fa CNF-11\uff0cMODE-11\n    GPIOB->CRH |= (GPIO_CRH_MODE10 | GPIO_CRH_MODE11 |\n                   GPIO_CRH_CNF10 | GPIO_CRH_CNF11);\n\n    \/\/ 3. I2C2\u914d\u7f6e\n    \/\/ 3.1 \u786c\u4ef6\u5de5\u4f5c\u6a21\u5f0f\n    I2C2->CR1 &= ~I2C_CR1_SMBUS;\n    I2C2->CCR &= ~I2C_CCR_FS;\n\n    \/\/ 3.2 \u9009\u62e9\u8f93\u5165\u7684\u65f6\u949f\u9891\u7387\n    I2C2->CR2 |= 36;\n\n    \/\/ 3.3 \u914d\u7f6eCCR\uff0c\u5bf9\u5e94\u6570\u636e\u4f20\u8f93\u901f\u7387100kb\/s\uff0cSCL\u9ad8\u7535\u5e73\u65f6\u95f4\u4e3a 5us\n    I2C2->CCR |= 180;\n\n    \/\/ 3.4 \u914d\u7f6eTRISE\uff0cSCL\u4e0a\u5347\u6cbf\u6700\u5927\u65f6\u949f\u5468\u671f\u6570 + 1\n    I2C2->TRISE |= 37;\n\n    \/\/ 3.5 \u4f7f\u80fdI2C2\u6a21\u5757\n    I2C2->CR1 |= I2C_CR1_PE;\n}\n\n\/\/ \u53d1\u51fa\u8d77\u59cb\u4fe1\u53f7\nuint8_t I2C_Start(void)\n{\n    \/\/ \u4ea7\u751f\u4e00\u4e2a\u8d77\u59cb\u4fe1\u53f7\n    I2C2->CR1 |= I2C_CR1_START;\n\n    \/\/ \u5f15\u5165\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\n    uint16_t timeout = 0xffff;\n\n    \/\/ \u7b49\u5f85\u8d77\u59cb\u4fe1\u53f7\u53d1\u51fa\n    while ((I2C2->SR1 & I2C_SR1_SB) == 0 && timeout)\n    {\n        timeout--;\n    }\n    return timeout ? OK : FAIL;\n}\n\n\/\/ \u8bbe\u7f6e\u63a5\u6536\u5b8c\u6210\u4e4b\u540e\u53d1\u51fa\u505c\u6b62\u4fe1\u53f7\nvoid I2C_Stop(void)\n{\n    I2C2->CR1 |= I2C_CR1_STOP;\n}\n\n\/\/ \u4e3b\u673a\u8bbe\u7f6e\u4f7f\u80fd\u5e94\u7b54\u4fe1\u53f7\nvoid I2C_Ack(void)\n{\n    I2C2->CR1 |= I2C_CR1_ACK;\n}\n\n\/\/ \u4e3b\u673a\u8bbe\u7f6e\u4f7f\u80fd\u975e\u5e94\u7b54\u4fe1\u53f7\nvoid I2C_Nack(void)\n{\n    I2C2->CR1 &= ~I2C_CR1_ACK;\n}\n\n\/\/ \u4e3b\u673a\u53d1\u9001\u8bbe\u5907\u5730\u5740\uff0c\u5e76\u7b49\u5f85\u5e94\u7b54\nuint8_t I2C_SendAddr(uint8_t addr)\n{\n    \/\/ \u76f4\u63a5\u5c06\u8981\u53d1\u9001\u7684\u5730\u5740\u7ed9\u5230DR\n    I2C2->DR = addr;\n\n    \/\/ \u7b49\u5f85\u5e94\u7b54\n    uint16_t timeout = 0xffff;\n    while ((I2C2->SR1 & I2C_SR1_ADDR) == 0 && timeout)\n    {\n        timeout--;\n    }\n    \/\/ \u8bbf\u95eeSR2\uff0c\u6e05\u9664ADDR\u6807\u5fd7\u4f4d\n    if (timeout > 0)\n    {\n        I2C2->SR2;\n    }\n\n    return timeout ? OK : FAIL;\n}\n\n\/\/ \u4e3b\u673a\u53d1\u9001\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u636e\uff08\u5199\u5165\uff09\uff0c\u5e76\u7b49\u5f85\u5e94\u7b54\nuint8_t I2C_SendByte(uint8_t byte)\n{\n    \/\/ 1. \u5148\u7b49\u5f85DR\u4e3a\u7a7a\uff0c\u4e0a\u4e00\u4e2a\u5b57\u8282\u6570\u636e\u5df2\u7ecf\u53d1\u9001\u5b8c\u6bd5\n    uint16_t timeout = 0xffff;\n    while ((I2C2->SR1 & I2C_SR1_TXE) == 0 && timeout)\n    {\n        timeout--;\n    }\n\n    \/\/ 2. \u5c06\u8981\u53d1\u9001\u7684\u5b57\u8282\u653e\u5165DR\u4e2d\n    I2C2->DR = byte;\n\n    \/\/ 3. \u7b49\u5f85\u5e94\u7b54\n    timeout = 0xffff;\n    while ((I2C2->SR1 & I2C_SR1_BTF) == 0 && timeout)\n    {\n        timeout--;\n    }\n    return timeout ? OK : FAIL;\n}\n\n\/\/ \u4e3b\u673a\u4eceEEPROM\u63a5\u6536\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u636e\uff08\u8bfb\u53d6\uff09\nuint8_t I2C_ReadByte(void)\n{\n    \/\/ 1. \u5148\u7b49\u5f85DR\u4e3a\u6ee1\n    uint16_t timeout = 0xffff;\n    while ((I2C2->SR1 & I2C_SR1_RXNE) == 0 && timeout)\n    {\n        timeout--;\n    }\n\n    \/\/ 2. \u5c06\u6536\u5230\u7684\u5b57\u8282\u6570\u636e\u8fd4\u56de\n    return timeout ? I2C2->DR : FAIL;\n}\n\n<\/code><\/pre>\n\n\n\n
m24c02.c<\/p>\n\n\n\n
\/*\n * @Author: wushengran\n * @Date: 2024-05-31 11:48:48\n * @Description:\n *\n * Copyright (c) 2024 by atguigu, All Rights Reserved.\n *\/\n#include \"m24c02.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid M24C02_Init(void)\n{\n    I2C_Init();\n}\n\n\/\/ \u5411EEPROM\u5199\u5165\u4e00\u4e2a\u5b57\u8282\nvoid M24C02_WriteByte(uint8_t innerAddr, uint8_t byte)\n{\n    \/\/ 1. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 2. \u53d1\u9001\u5199\u5730\u5740\n    I2C_SendAddr(W_ADDR);\n\n    \/\/ 3. \u53d1\u9001\u5185\u90e8\u5730\u5740\n    I2C_SendByte(innerAddr);\n\n    \/\/ 4. \u53d1\u9001\u5177\u4f53\u6570\u636e\n    I2C_SendByte(byte);\n\n    \/\/ 5. \u53d1\u51fa\u4e00\u4e2a\u505c\u6b62\u4fe1\u53f7\n    I2C_Stop();\n\n    \/\/ \u5ef6\u8fdf\u7b49\u5f85\u5199\u5165\u5468\u671f\u7ed3\u675f\n    Delay_ms(5);\n}\n\n\/\/ \u8bfb\u53d6EEPROM\u7684\u4e00\u4e2a\u5b57\u8282\nuint8_t M24C02_ReadByte(uint8_t innerAddr)\n{\n    \/\/ 1. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 2. \u53d1\u9001\u5199\u5730\u5740\uff08\u5047\u5199\uff09\n    I2C_SendAddr(W_ADDR);\n\n    \/\/ 3. \u53d1\u9001\u5185\u90e8\u5730\u5740\n    I2C_SendByte(innerAddr);\n\n    \/\/ 4. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 5. \u53d1\u9001\u8bfb\u5730\u5740\uff08\u771f\u8bfb\uff09\n    I2C_SendAddr(R_ADDR);\n\n    \/\/ 6. \u8bbe\u7f6e\u975e\u5e94\u7b54\n    I2C_Nack();\n\n    \/\/ 7. \u8bbe\u7f6e\u5728\u63a5\u6536\u4e0b\u4e00\u4e2a\u5b57\u8282\u540e\u53d1\u51fa\u505c\u6b62\u4fe1\u53f7\n    I2C_Stop();\n\n    \/\/ 8. \u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n    uint8_t byte = I2C_ReadByte();\n\n    return byte;\n}\n\n\/\/ \u8fde\u7eed\u5199\u5165\u591a\u4e2a\u5b57\u8282\uff08\u9875\u5199\uff09\nvoid M24C02_WriteBytes(uint8_t innerAddr, uint8_t *bytes, uint8_t size)\n{\n    \/\/ 1. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 2. \u53d1\u9001\u5199\u5730\u5740\n    I2C_SendAddr(W_ADDR);\n\n    \/\/ 3. \u53d1\u9001\u5185\u90e8\u5730\u5740\n    I2C_SendByte(innerAddr);\n\n    \/\/ \u5229\u7528\u5faa\u73af\u4e0d\u505c\u53d1\u9001\u6570\u636e\n    for (uint8_t i = 0; i < size; i++)\n    {\n        \/\/ 4. \u53d1\u9001\u5177\u4f53\u6570\u636e\n        I2C_SendByte(bytes[i]);\n    }\n\n    \/\/ 5. \u53d1\u51fa\u4e00\u4e2a\u505c\u6b62\u4fe1\u53f7\n    I2C_Stop();\n\n    \/\/ \u5ef6\u8fdf\u7b49\u5f85\u5199\u5165\u5468\u671f\u7ed3\u675f\n    Delay_ms(5);\n}\n\n\/\/ \u8fde\u7eed\u8bfb\u53d6\u591a\u4e2a\u5b57\u8282\nvoid M24C02_ReadBytes(uint8_t innerAddr, uint8_t *buffer, uint8_t size)\n{\n    \/\/ 1. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 2. \u53d1\u9001\u5199\u5730\u5740\uff08\u5047\u5199\uff09\n    I2C_SendAddr(W_ADDR);\n\n    \/\/ 3. \u53d1\u9001\u5185\u90e8\u5730\u5740\n    I2C_SendByte(innerAddr);\n\n    \/\/ 4. \u53d1\u51fa\u5f00\u59cb\u4fe1\u53f7\n    I2C_Start();\n\n    \/\/ 5. \u53d1\u9001\u8bfb\u5730\u5740\uff08\u771f\u8bfb\uff09\n    I2C_SendAddr(R_ADDR);\n\n    \/\/ \u5229\u7528\u5faa\u73af\u8fde\u7eed\u8bfb\u53d6\u591a\u4e2a\u5b57\u8282\n    for (uint8_t i = 0; i < size; i++)\n    {\n        \/\/ 6. \u8bbe\u7f6e\u5e94\u7b54\u6216\u975e\u5e94\u7b54\n        if (i < size - 1)\n        {\n            I2C_Ack();\n        }\n        else\n        {\n            I2C_Nack();\n\n            \/\/ 7. \u8bbe\u7f6e\u53d1\u51fa\u505c\u6b62\u4fe1\u53f7\n            I2C_Stop();\n        }\n        \/\/ 8. \u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\n        buffer[i] = I2C_ReadByte();\n    }\n}\n\n<\/code><\/pre>\n\n\n\n
hal\u5e93<\/h3>\n\n\n\n
\/*\n * @Author: wushengran\n * @Date: 2024-05-31 11:48:48\n * @Description:\n *\n * Copyright (c) 2024 by atguigu, All Rights Reserved.\n *\/\n#include \"m24c02.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid M24C02_Init(void)\n{\n    MX_I2C2_Init();\n}\n\n\/\/ \u5411EEPROM\u5199\u5165\u4e00\u4e2a\u5b57\u8282\nvoid M24C02_WriteByte(uint8_t innerAddr, uint8_t byte)\n{\n    HAL_I2C_Mem_Write(&hi2c2,W_ADDR,innerAddr,I2C_MEMADD_SIZE_8BIT,&byte,1,1000);\n\n    HAL_Delay(5);\n}\n\n\/\/ \u8bfb\u53d6EEPROM\u7684\u4e00\u4e2a\u5b57\u8282\nuint8_t M24C02_ReadByte(uint8_t innerAddr)\n{\n    uint8_t byte;\n    HAL_I2C_Mem_Read(&hi2c2,R_ADDR,innerAddr,I2C_MEMADD_SIZE_8BIT,&byte,1,1000);\n\n    return byte;\n}\n\n\/\/ \u8fde\u7eed\u5199\u5165\u591a\u4e2a\u5b57\u8282\uff08\u9875\u5199\uff09\nvoid M24C02_WriteBytes(uint8_t innerAddr, uint8_t *bytes, uint8_t size)\n{\n    HAL_I2C_Mem_Write(&hi2c2,W_ADDR,innerAddr,I2C_MEMADD_SIZE_8BIT,bytes,size,1000);\n    \/\/ \u5ef6\u8fdf\u7b49\u5f85\u5199\u5165\u5468\u671f\u7ed3\u675f\n    HAL_Delay(5);\n}\n\n\/\/ \u8fde\u7eed\u8bfb\u53d6\u591a\u4e2a\u5b57\u8282\nvoid M24C02_ReadBytes(uint8_t innerAddr, uint8_t *buffer, uint8_t size)\n{\n    HAL_I2C_Mem_Read(&hi2c2,R_ADDR,innerAddr,I2C_MEMADD_SIZE_8BIT,buffer,size,1000);\n}\n\n<\/code><\/pre>\n\n\n\n
\u5b9a\u65f6\u5668<\/h2>\n\n\n\n
systick\u5b9a\u65f6\u5668<\/h3>\n\n\n\n
\u7406\u8bba\u4e0a\u8981\u914d\u7f6envic\u4f46\u662f\uff0csystick\u662f\u5185\u6838\u7684\uff0c\u8fd9\u5c31\u4e0d\u7528\u914d\u7f6e\u4f18\u5148\u7ea7\u4e86\u3002<\/p>\n\n\n\n
void SysTick_init(void){\n\tSysTick->LOAD = 7999999;\n\n\tSysTick->CTRL &= ~SysTick_CTRL_CLKSOURCE;\n\n\tSysTick->CTRL |= SysTick_CTRL_TICKINT;\n\n\tSysTick\t->CTRL |= SysTick_CTRL_ENABLE;\n\n}\nvoid SysTick_Handler(void){\n\tif (SysTick->CTRL & SysTick_CTRL_COUNTFLAG)\n\t{\n\t\tLED_Toggle(LED1);\n\t}\n\t\n}\n<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u9ed8\u8ba4\u7684\u5c31\u662f\u7528\u768472M\u7684\u65f6\u949f\u6e90 SysTick->CTRL &= ~SysTick_CTRL_CLKSOURCE\u7f6e0\u5c31\u662f8M\uff0c1\u5c31\u662f72M<\/p>\n\n\n\n
\u5728hal\u5e93\u4e2d\u5e95\u5c42\u6709\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf uwTick\u662f\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\u8ba1\u65f6\u3002\u4f46\u662f\u8fd9\u4e2a\u53d8\u91cf\u8ddf\u5176\u4ed6\u7684\u4e00\u4e9b\u7cfb\u7edf\u53c2\u6570\u6709\u5173\uff0c\u4e0d\u80fd\u6539\u53d8\u4ed6\u7684\u5927\u5c0f\uff0c\u8fd9\u4e2a\u65f6\u5019\u83b7\u53d6\u4e00\u79d2\u5c31\u53ef\u4ee5\u5728\u4e2d\u65ad\u51fd\u6570\u4e2d<\/p>\n\n\n\n
if (uwIick %1000 == 0){\n    led_toggle();\n}\n<\/code><\/pre>\n\n\n\n
systick\u5b9a\u65f6\u5668\u53ea\u80fd\u5411\u4e0b\u8ba1\u6570\uff0c\u53ea\u670924\u4f4d\u3002<\/p>\n\n\n\n
\u57fa\u672c\u5b9a\u65f6\u5668<\/h3>\n\n\n\n
\u53ea\u80fd\u5411\u4e0a\u8ba1\u6570\uff0c\u53ea\u670916\u4f4d\u3002\uff0c\u6ca1\u6709\u5916\u90e8IO\uff0c\u53ea\u80fd\u8bb0\u65f6\u3002<\/p>\n\n\n\n
\u521d\u59cb\u5316\u914d\u7f6e<\/strong><\/p>\n\n\n\n
#include \"timer6 .h\"\n\nvoid Timer_Init(void){\n    RCC->APB1ENR |= RCC_APB1ENR_TIM6EN;\n\n    TIM6->PSC = 7199;\n    TIM6->ARR = 9999;\n\/\/  \u66f4\u65b0\u4e2d\u65ad\u4f7f\u80fd\n    TIM6->DIER |= TIM_DIER_UIE;\n\/\/\u914d\u7f6e\u4e2d\u65ad\n    NVIC_SetPriorityGrouping(3);\n    NVIC_SetPriority(TIM6_IRQn,5);\n    NVIC_EnableIRQ(TIM6_IRQn);\n\/\/  \u5f00\u542f\u5b9a\u65f6\u5668\n    TIM6->CR1 |= TIM_CR1_CEN;\n}\nvoid TIM6_IRQHandler(void){\n    TIM6->SR &= ~TIM_SR_UIF;\/\/\u6e05\u9664\u6807\u5fd7\u4f4d\uff0c\u8fd9\u4e2a\u5f97\u8f6f\u4ef6\u6e05\u9664\uff0c\u4e0d\u80fd\u786c\u4ef6\u6e05\u9664\n    LED_Toggle(LED1);\n    \n}\n<\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u73b0\u6bcf\u79d2\u7ffb\u8f6c\u4e00\u4e0bled\u706f\u4e86<\/p>\n\n\n\n
\u4f7f\u7528hal\u5e93\u5c31\u662f\u5728\u4e2d\u65ad\u7684\u65f6\u5019\uff0c\u9009\u62e9\u56de\u8c03\u51fd\u6570\uff0c<\/p>\n\n\n\n
\u9009\u62e9PeriodElapsedCallback();<\/p>\n\n\n\n
\u7136\u540e\u76f4\u63a5\u7ffb\u8f6c\u5f15\u811a<\/p>\n\n\n\n
void TIM6_IRQHandler(void)\n{\n\n  HAL_TIM_IRQHandler(&htim6);\n}\n\n\nvoid HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim){\n  if (htim->Instance == TIM6)\n  {\n  HAL_GPIO_TogglePin(LED1_GPIO_Port,LED1_Pin);\n  }\n  \n}\n<\/code><\/pre>\n\n\n\n
\u4f46\u662f\u8fd9\u6837\u53d1\u73b0\u6ca1\u6709\u6548\u679c\uff0c\u8fd9\u91cc\u6709\u4e2a\u5751<\/strong><\/p>\n\n\n\n
\u914d\u7f6e\u5b8c\u4e86\u5b9a\u65f6\u5668\uff0c\u4f46\u662f\u6ca1\u6709\u6253\u5f00\u5b9a\u65f6\u5668\uff0c\u9ed8\u8ba4\u662f\u4e0d\u6253\u5f00\u7684\uff0c\u6240\u4ee5\u8981\u4f7f\u80fd\u3002<\/p>\n\n\n\n
\"image-20250326210517215\"\/<\/div><\/figure>\n\n\n\n
\u8fd9\u91cc\u7528\u4e86\u4e2d\u65ad\u5c31\u9009\u56fe\u4e0a\u90a3\u4e2a\u3002<\/p>\n\n\n\n
\u73b0\u5728\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n
\u5728\u505a\u7ec3\u4e60\u7684\u65f6\u5019\uff08systick\u548ctim6\u540c\u65f6\u63a7\u5236\u4e24\u4e2a\u706f\u540c\u65f6\u4eae\u706d\u7684\u65f6\u5019\uff09<\/p>\n\n\n\n
\u6709\u4e2a\u5751<\/p>\n\n\n\n
\u5c31\u662f\u4ed6\u4eec\u4f1a\u4e0d\u540c\u6b65\uff0c\u6bcf\u6b21\u90fd\u662ftim6\u5148\u8fdb\u5165\u4e2d\u65ad<\/p>\n\n\n\n
\u5728\u5e95\u5c42\u662f\u56e0\u4e3a\uff0c\u5b9a\u65f6\u5668\u9ed8\u8ba4\u521d\u59cb\u7684\u65f6\u5019\uff0c\u4f1a\u4ea7\u751f\u4e00\u4e2a\u5237\u65b0\u4e8b\u4ef6\uff0c\u4f1a\u5bfc\u81f4\u4e00\u6b21\u4e2d\u65ad\uff0c\u6240\u4ee5\u4ed6\u4f1a\u3002<\/p>\n\n\n\n
\u6709\u4e2a\u601d\u8def\u5c31\u662f\u5f15\u5165\u4e00\u4e2a\u53d8\u91cf\uff0c\u8868\u793a\u8fdb\u5165\u4e2d\u65ad\u7684\u6b21\u6570\uff0c\u53ea\u8981\u7b2c\u4e00\u6b21\u8fdb\u5165\u4e2d\u65ad\u7684\u65f6\u5019\u4e0d\u7ffb\u8f6c\u7535\u5e73\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n
\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u6709\u70b9low\uff0c\u6700\u597d\u7684\u65b9\u6cd5\u5c31\u662f \u5e95\u5c42\u4e3b\u8981\u662f\u56e0\u4e3a\u4e00\u5f00\u59cb\u4ed6\u7684ARR\u548cpsc\u5237\u4e0d\u8fdb\u53bb\uff0c\u6240\u4ee5\u4ee51\/72M\u7684\u901f\u5ea6\u8fdb\u4e86\u4e00\u6b21\u4e2d\u65ad\uff0c\u7ffb\u8f6c\u4e86\u4e00\u6b21\uff0c\u6240\u4ee5\u4e5f\u6839\u672c\u770b\u4e0d\u51fa\u6765\uff0c\u65e2\u7136\u662f\u5237\u4e0d\u6280\u5de7\u6012\uff0c\u90a3\u5c31\u76f4\u63a5\u7528\u4e00\u4e2a\u5bc4\u5b58\u5668\uff0c\u53ef\u4ee5\u624b\u52a8\u5237\u8fdb\u53bb\uff0c\u4ea7\u751f\u4e00\u4e2a\u5237\u65b0\u4e8b\u4ef6\uff0c\u90a3\u5c31\u662f<\/p>\n\n\n\n
TIMx_EGR\u4e2d\u7684UG\u6807\u5fd7\u4f4d\n<\/code><\/pre>\n\n\n\n
\u901a\u7528\u5bc4\u5b58\u5668<\/h3>\n\n\n\n
\u57fa\u672c\u5b9a\u65f6\u5668\u7684\u529f\u80fd\u5168\u90fd\u53ef\u4ee5\uff0c\u800c\u4e14\u9664\u4e86\u5185\u90e8\u65f6\u949f\u6e90\uff0c\u8fd8\u80fd\u9009\u62e9\u5916\u90e8\u65f6\u949f\u6e90\u3002<\/p>\n\n\n\n
\u4ece\u5916\u90e8\u8f93\u5165\u7684\u5f15\u811a\u8109\u51b2\u6765\u4f5c\u4e3a\u65f6\u949f\u6e90\uff0c<\/p>\n\n\n\n
\u5916\u90e8\u65f6\u949f\u6e90\u6a21\u5f0f1\u7684\u901a\u90531 \u7684TI1FP1,\u548c\u901a\u90532\u7684TI2FP2,\u8fd8\u80fd\u505a\u8f93\u5165\u6355\u83b7<\/p>\n\n\n\n
\u5916\u90e8\u65f6\u949f\u6e90\u6a21\u5f0f2 \u7684TITMx_ETR\u76f4\u63a5\u5c31\u662f\u76f4\u63a5\u5916\u90e8\u8f93\u5165\u7684\u5f15\u811a\u8109\u51b2\u6765\u4f5c\u4e3a\u65f6\u949f\u6e90<\/p>\n\n\n\n
PWM\uff08\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236<\/h3>\n\n\n\n
\u4e09\u4e2a\u91cd\u8981\u53c2\u6570<\/p>\n\n\n\n
    \n
  • \u5468\u671f<\/li>\n\n\n\n
  • \u9891\u7387<\/li>\n\n\n\n
  • \u5360\u7a7a\u6bd4\uff1a\u9ad8\u7535\u5e73\u5bbd\u5ea6t\u9664\u4ee5\u5468\u671fT(\u5360\u7a7a\u6bd4\u624d\u4f1a\u5f71\u54cd\u4eae\u5ea6\uff0c\u4e00\u822c\u4e0d\u6539\u53d8\u5468\u671f\u548c\u9891\u7387\uff0c\u8fd9\u6837\u624d\u80fd\u6539\u53d8\u7b49\u6548\u7684\u7535\u538b\u503c)<\/li>\n<\/ul>\n\n\n\n
    \u8f93\u51fa\u6bd4\u8f83\u529f\u80fd<\/h4>\n\n\n\n
    \u4e00\u822c\u7528\u6765\u63a7\u5236\u8f93\u51fa\u65b9\u6ce2\u7684\u3001<\/p>\n\n\n\n
    \u5927\u591a\u7528\u4e8e\u8f93\u51fapwm\u6ce2<\/p>\n\n\n\n
    \u4e5f\u53ef\u4ee5\u8f93\u51fa\u5176\u4ed6\u6ce2\u5f62<\/p>\n\n\n\n
    \u4f46\u662f\u53ea\u80fd\u662f\u65b9\u6ce2<\/p>\n\n\n\n
    \u5bc4\u5b58\u5668<\/h5>\n\n\n\n
    pwm\u6a21\u5f0f1<\/p>\n\n\n\n
    \"image-20250327112908978\"\/<\/div><\/figure>\n\n\n\n
    pwm\u6a21\u5f0f2<\/p>\n\n\n\n
    \"image-20250327113108335\"\/<\/div><\/figure>\n\n\n\n
    \u4ee5\u540e\u5e38\u7528\u7684\u5c31\u662fpwm1\u7684\u6a21\u5f0f\uff0c\u5c0f\u4e8e\u7684\u65f6\u5019\u662f\u9ad8\u7535\u5e73\u3002<\/p>\n\n\n\n
    \u914d\u7f6e\uff1a<\/p>\n\n\n\n
    #include \"timer5.h\"\n\nvoid TIM5_Init(void)\n{  \n    RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;\n    RCC->APB1ENR |= RCC_APB1ENR_TIM5EN;\n    \/\/2.\n    GPIOA->CRL |= GPIO_CRL_MODE1;\n    GPIOA->CRL |= GPIO_CRL_CNF1_1;\n    GPIOA->CRL &= ~GPIO_CRL_CNF1_0;\n\n    \/\/3.\u5b9a\u65f6\u5668\u914d\u7f6e\n    TIM5->PSC = 7199;\n    TIM5->ARR = 99;\n\n    TIM5->CR1 &= ~TIM_CR1_DIR;\/\/\u9ed8\u8ba4\u662f\u5411\u4e0a\u8ba1\u6570\uff0c\u8fd9\u6b65\u4e0d\u8981\u4e5f\u884c\n\n    \/\/\u8bbe\u7f6e\u901a\u90532\u7684CCR2\u7684\u503c\n    TIM5->CCR2 =50;\n\n    \/\/\u914d\u7f6e\u901a\u90532\u4e3a\u8f93\u51fa\u6a21\u5f0f\n    TIM5->CCMR1 &= ~TIM_CCMR1_CC2S;\n    \/\/\u914d\u7f6e\u901a\u90532pwm1\u6a21\u5f0f\n    TIM5->CCMR1 |= TIM_CCMR1_OC2M_2;\n    TIM5->CCMR1 |= TIM_CCMR1_OC2M_1;\n    TIM5->CCMR1 &= ~TIM_CCMR1_OC2M_0;\n\n    \/\/\u5f00\u542f\u4f7f\u80fd\u8f93\u51fa\u901a\u9053\n    TIM5->CCER |= TIM_CCER_CC2E;\n\n\n}\n\nvoid TIM5_Start(void){\n    TIM5->CR1 |= TIM_CR1_CEN;\n}\n\nvoid TIM5_Stop(void){\n    TIM5->CR1 &= ~TIM_CR1_CEN;\n}\n\nvoid Set_DutyCycle(uint8_t dutycycle){\n    TIM5->CCR2 = dutycycle;\n}\n\n<\/code><\/pre>\n\n\n\n
    \u4e3b\u51fd\u6570\u5b9e\u73b0<\/p>\n\n\n\n
    \/*\n * @Author: wushengran\n * @Date: 2024-05-23 15:14:48\n * @Description:\n *\n * Copyright (c) 2024 by atguigu, All Rights Reserved.\n *\/\n#include \"usart.h\"\n#include \"m24c02.h\"\n#include <string.h>\n#include \"delay.h\"\n#include \"timer5.h\"\nuint32_t count = 0;\nint main(void)\n{\n\tTIM5_Init();\n\tUSART_Init();\n\tprintf(\"hello,world\\n\");\n\tTIM5_Start();\n\tuint8_t dutycycle = 0;\n\tuint8_t dir = 0;\n\t\/\/ \u65e0\u9650\u5faa\u73af\n\twhile (1)\n\t{\n\t\tif (dir == 0)\n\t\t{\n\t\t\t\/* \u5360\u7a7a\u6bd4\u589e\u5927*\/\n\t\t\tdutycycle +=1;\n\t\t\tif (dutycycle >=99)\n\t\t\t{\n\t\t\t\tdir = 1;\n\t\t\t}\n\t\t}\n\t\telse\t\t\n\t\t{\n\t\t\t\/* \u5360\u7a7a\u6bd4\u589e\u5927*\/\n\t\t\tdutycycle -=1;\n\t\t\tif (dutycycle <= 1)\n\t\t\t{\n\t\t\t\tdir = 0;\n\t\t\t}\n\t\t}\n\t\t\n\t\t\/\/\u8bbe\u7f6e\u5360\u7a7a\u6bd4\n\t\tSet_DutyCycle(dutycycle);\n\t\tDelay_ms(10);\n\t\t\n\t}\n}\n<\/code><\/pre>\n\n\n\n
    hal\u5e93<\/h5>\n\n\n\n
    void SetDuty(uint8_t duty){\n__HAL_TIM_SetCompare(&htim5,TIM_CHANNEL_2,duty);\/\/\u8fd9\u4e2a\u51fd\u6570\u8bbe\u7f6e\u5360\u7a7a\u6bd4\u7684\n}\n<\/code><\/pre>\n\n\n\n
    \u7136\u540e\u5728\u4e3b\u51fd\u6570\u91cc\u9762,\u9700\u8981\u5f00\u542fpwm<\/p>\n\n\n\n
      HAL_TIM_PWM_Start(&htim5,TIM_CHANNEL_2);\n<\/code><\/pre>\n\n\n\n
    LCD\u6db2\u6676\u5c4f\u80cc\u5149\u6e90<\/h4>\n\n\n\n
    \u5728PB0\u4e0a<\/p>\n\n\n\n
    \u6d4b\u91cfPWM\u7684\u9891\u7387\u548c\u5468\u671f\uff08\u8f93\u5165\u6355\u83b7\uff09<\/h3>\n\n\n\n
    \u9700\u8981\u8ba9\u5b9a\u65f6\u5668\u7684\u65f6\u949f\u8981\u5927\u4e00\u70b9\uff0c\u7136\u540eLOAD\u4e5f\u8981\u5927\u4e00\u70b9\uff0c\u76f4\u63a5\u53d665535\u6700\u5927\uff0c\u9632\u6b62\u6d4b\u4e0d\u51fa\u6765<\/p>\n\n\n\n
    hal\u5e93\u9ed8\u8ba4\u9009\u62e9\u7684TIM4\u7684CH1\u901a\u9053\u4f7f\u7528\u7684\u5f15\u811a\u4e0d\u5bf9\u4fee\u6539\u65b9\u6cd5<\/h4>\n\n\n\n
    \u76f4\u63a5\u9009\u4e2d\u4ed6\u9ed8\u8ba4\u7684\u5f15\u811a\uff0c\u5728\u82af\u7247\u56fe\u4e2d\uff0c\u70b9\u51fbreset\uff0c\u7136\u540e\u9009\u62e9\u8981\u4f7f\u7528\u7684\u5f15\u811atim4\u590d\u7528\uff0c\u7136\u540e\u518d\u91cd\u65b0\u914d\u7f6e\u3002<\/p>\n\n\n\n
    hal\u5e93\u4e2d\u65ad\u56de\u8c03\u51fd\u6570<\/p>\n\n\n\n
    void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim){\n  if(htim->Instance == TIM4){\n    __HAL_TIM_SetCounter(&htim4,0);\/\/\u8ba1\u6570\u5668\u6e05\u96f6\n  }\n}\n<\/code><\/pre>\n\n\n\n
    \u8f93\u5165\u6355\u83b7\u4e00\u79cd\u7279\u6b8a\u7684\u6a21\u5f0f\u2014\u2014PWM\u8f93\u5165\u6a21\u5f0f<\/h4>\n\n\n\n
    \u8fd9\u79cd\u6a21\u5f0f\u4e0d\u4ec5\u53ef\u4ee5\u6d4b\u91cf\u5468\u671f\uff0c\u8fd8\u53ef\u4ee5\u6d4b\u91cf\u5360\u7a7a\u6bd4\u3002<\/p>\n\n\n\n
    \u4ece\u6a21\u5f0f\u63a7\u5236\u5b9a\u65f6\u5668\u590d\u4f4d\u3002<\/p>\n\n\n\n
    \u7b2c\u4e00\u901a\u9053TI1FP1\u9ad8\u7535\u5e73\u89e6\u53d1\uff0c\u540c\u65f6\u89e6\u53d1\u4ece\u6a21\u5f0f\uff0cTI1FP2\u4f4e\u7535\u5e73\u89e6\u53d1\u3002<\/p>\n\n\n\n
    \u9ad8\u7ea7\u5b9a\u65f6\u5668<\/h3>\n\n\n\n
    \u76f8\u6bd4\u4e8e\u901a\u7528\u5b9a\u65f6\u5668\u591a\u4e86<\/p>\n\n\n\n
      \n
    • \u91cd\u590d\u8ba1\u6570\u5668<\/li>\n\n\n\n
    • \u4e92\u8865\u8f93\u51fa(\u53ea\u8981ch1,ch2,ch3\u6709\uff0cch4\u6ca1\u6709)\"image-20250329144015946\"<\/li>\n\n\n\n
    • \u6b7b\u533a\u751f\u6210<\/li>\n<\/ul>\n\n\n\n
      \u751f\u6210\u6b7b\u533a\u65f6\u95f4\uff0c\u5ef6\u8fdf\u4e00\u6bb5\u65f6\u95f4\u518d\u5f00\u901a\u3002<\/p>\n\n\n\n
      \"image-20250329144317168\"\/<\/div><\/figure>\n\n\n\n
        \n
      • \u77ed\u8def\u8f93\u5165\u4fe1\u53f7<\/li>\n<\/ul>\n\n\n\n
        DMA\u6a21\u5757<\/h2>\n\n\n\n
        ME2ME(\u7279\u6b8a)\uff08ROM\u5230RAM\uff09<\/h3>\n\n\n\n
        \u5bc4\u5b58\u5668<\/h4>\n\n\n\n
        DMA1.c\u6587\u4ef6<\/p>\n\n\n\n
        #include\"dma.h\"\n\/\/\u521d\u59cb\u5316\nvoid DMA1_Init(void){\n    \/\/\u5f00\u542f\u65f6\u949f\n    RCC->AHBENR |= RCC_AHBENR_DMA1EN;\n    \/\/\u6570\u636e\u4f20\u8f93\u65b9\u5411\n    DMA1_Channel1->CCR |= DMA_CCR1_MEM2MEM;\n    DMA1_Channel1->CCR |= DMA_CCR1_DIR;\n\n    \/\/\u8bbe\u7f6e\u4f20\u8f93\u7684\u6570\u636e\u5bbd\u5ea6,\u9ed8\u8ba4\u662f8\u4f4d\n    DMA1_Channel1->CCR &= ~DMA_CCR1_PSIZE;\n    DMA1_Channel1->CCR &= ~DMA_CCR1_MSIZE;\n\n    \/\/\u5f00\u542f\u5730\u5740\u81ea\u589e\n    DMA1_Channel1->CCR |= DMA_CCR1_PINC;\n    DMA1_Channel1->CCR |= DMA_CCR1_MINC;\n\n    \/\/\u5f00\u542f\u6570\u636e\u4f20\u8f93\u5b8c\u6210\u4e2d\u65ad\u6807\u5fd7\n    DMA1_Channel1->CCR |= DMA_CCR1_TCIE;\n\n    \/\/\u5f00\u542f\u4e2d\u65ad\u670d\u52a1nvic\u914d\u7f6e\n    NVIC_SetPriorityGrouping(3);\n    NVIC_SetPriority(DMA1_Channel1_IRQn,4);\n    NVIC_EnableIRQ(DMA1_Channel1_IRQn);\n\n}\n\/\/\u6570\u636e\u4f20\u8f93\nvoid DMA1_Transmit(uint32_t srcAddr,uint32_t destAddr,uint16_t datalen){\n    \/\/1.\u8bbe\u7f6e\u5916\u8bbe\u5730\u5740\n    DMA1_Channel1->CPAR |= destAddr;\n    \/\/2.\u8bbe\u7f6e\u5b58\u50a8\u5668\u5730\u5740\n    DMA1_Channel1->CMAR |= srcAddr;\n    \/\/3.\u8bbe\u7f6e\u4f20\u8f93\u7684\u6570\u636e\u91cf\n    DMA1_Channel1->CNDTR = datalen;\n    \/\/4.\u5f00\u542f\u901a\u9053\uff0c\u5f00\u59cb\u4f20\u8f93\u6570\u636e\n    DMA1_Channel1->CCR |= DMA_CCR1_EN;\n}\n\n\/\/\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\nvoid DMA1_Channel1_IRQHandler(void){\n    \/\/\u5224\u65ad\u4e00\u4e0b\u4e2d\u65ad\u6807\u5fd7\u4f4d\n    if (DMA1->ISR & DMA_ISR_TCIF1)\n    {\n        \/\/\u6e05\u9664\u4e2d\u65ad\u6807\u5fd7\u4f4d\n        DMA1->IFCR |= DMA_IFCR_CTCIF1;\n        \/\/\u5173\u95edDMA\u901a\u9053\n        DMA1_Channel1->CCR &= ~DMA_CCR1_EN;\n        DMA1_flag = 1;\n    }\n}\n<\/code><\/pre>\n\n\n\n
        main.c\u6587\u4ef6<\/p>\n\n\n\n
        \/*\n * @Author: wushengran\n * @Date: 2024-05-23 15:14:48\n * @Description: \n * \n * Copyright (c) 2024 by atguigu, All Rights Reserved. \n *\/\n#include \"led.h\"\n#include \"delay.h\"\n#include \"usart.h\"\n#include \"string.h\"\n#include \"stdio.h\"\n#include \"dma.h\"\nuint8_t buff[100]={0};\nuint8_t size = 0;\nuint8_t DMA1_flag = 0;\n\/\/\u5b9a\u4e49\u5168\u5c40\u5e38\u91cf\u653e\u5728rom\u4e2d\u4f5c\u4e3a\u6570\u636e\u6e90\nconst uint8_t src[] = {10,20,30,40};\n\/\/\u5b9a\u4e49\u6570\u636e\u53d8\u91cf\u7528\u6765\u5b58\u50a8\u63a5\u6536\u5230\u7684\u6570\u636e\nuint8_t dest[4] = {0};\n\nint main(void)\n{\n\tUSART_Init();\n\tDMA1_Init();\n\t\/\/\u6253\u5370\u53d8\u91cf\u5e38\u91cf\u5730\u5740\uff0c\u770b\u770b\u770b\u5728\u54ea\u91cc\n\tprintf(\"src = %p, dest = %p \",src,dest);\n\t\/\/\u5f00\u542f dma\u901a\u9053\u8fdb\u884c\u4f20\u8f93\n\tDMA1_Transmit((uint32_t)src,(uint32_t)dest,4);\n\n\twhile(1)\n\t{\n\t\t\tif (DMA1_flag)\n\t\t\t{\n\t\t\t\tfor (uint8_t i = 0; i < 4; i++)\n\t\t\t\t{\n\t\t\t\t\tprintf(\"%d\\t\",dest[i]);\n\t\t\t\t}\n\t\t\t\tDMA1_flag = 0;\n\t\t\t\t\n\t\t\t}\n\t\t\t\n\t\t}\n}\n<\/code><\/pre>\n\n\n\n
        hal\u5e93<\/h4>\n\n\n\n
        it.c<\/p>\n\n\n\n
        void DMA1_Channel1_IRQHandler(void)\n{\n  \/* USER CODE BEGIN DMA1_Channel1_IRQn 0 *\/\n\n  \/* USER CODE END DMA1_Channel1_IRQn 0 *\/\n  HAL_DMA_IRQHandler(&hdma_memtomem_dma1_channel1);\n  \/* USER CODE BEGIN DMA1_Channel1_IRQn 1 *\/\n  HAL_DMA_Abort_IT(&hdma_memtomem_dma1_channel1);\/\/\u5173\u95edDMA\u901a\u9053\n  flag = 1;\n  \/* USER CODE END DMA1_Channel1_IRQn 1 *\/\n}\n<\/code><\/pre>\n\n\n\n
        main.c<\/p>\n\n\n\n
        printf(\"hello,world\\n\");\n  printf(\"src=%p\\tdest=%p\\n\",src,dest);\n  \/\/\u5f00\u542fDMA\u4f20\u8f93\n  HAL_DMA_Start_IT(&hdma_memtomem_dma1_channel1,(uint32_t)src,(uint32_t)dest,4);\n  while (1)\n  {\n    if (flag)\n    {\n      for (uint8_t  i = 0; i < 4; i++)\n      {\n        printf(\"%d\\n\",dest[i]);\n      }\n      flag = 0;   \n    }\n  }\n<\/code><\/pre>\n\n\n\n
        RAM\u5230\u5916\u8bbe(\u4e32\u53e3)<\/h3>\n\n\n\n
        \u5bc4\u5b58\u5668<\/h4>\n\n\n\n
        dma.c<\/p>\n\n\n\n
        \/*\n * @Author: wushengran\n * @Date: 2024-06-07 11:35:48\n * @Description: \n * \n * Copyright (c) 2024 by atguigu, All Rights Reserved. \n *\/\n#include \"dma.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid DMA1_Init(void)\n{\n    \/\/ 1. \u5f00\u542f\u65f6\u949f\n    RCC->AHBENR |= RCC_AHBENR_DMA1EN;\n\n    \/\/ 2. DMA\u76f8\u5173\u914d\u7f6e\n    \/\/ 2.1 \u6570\u636e\u4f20\u8f93\u65b9\u5411: \u4ece\u5b58\u50a8\u5668\u8bfb\uff0c\u53d1\u5f80\u4e32\u53e3\u5916\u8bbe\n    DMA1_Channel4->CCR |= DMA_CCR4_DIR;\n\n    \/\/ 2.2 \u6570\u636e\u5bbd\u5ea6: 8\u4f4d - 00\n    DMA1_Channel4->CCR &= ~DMA_CCR4_PSIZE;\n    DMA1_Channel4->CCR &= ~DMA_CCR4_MSIZE;\n\n    \/\/ 2.3 \u5730\u5740\u81ea\u589e\uff1a\u5f00\u542f\u81ea\u589e\uff0c\u4e32\u53e3\u5730\u5740\u4e0d\u80fd\u81ea\u589e\n    DMA1_Channel4->CCR &= ~DMA_CCR4_PINC;\n    DMA1_Channel4->CCR |= DMA_CCR4_MINC;\n\n    \/\/ 2.4 \u5f00\u542f\u6570\u636e\u4f20\u8f93\u5b8c\u6210\u4e2d\u65ad\u6807\u5fd7\n    DMA1_Channel4->CCR |= DMA_CCR4_TCIE;\n\n    \/\/ 2.5 \u4f7f\u80fd\u4e32\u53e3\u7684DMA\u4f20\u8f93\u529f\u80fd\n    USART1->CR3 |= USART_CR3_DMAT;\n\n    \/\/ 2.6 \u5f00\u542f\u5faa\u73af\u4f20\u8f93\u529f\u80fd\n    DMA1_Channel4->CCR |= DMA_CCR4_CIRC;\n\n    \/\/ 3. NVIC\u914d\u7f6e\n    NVIC_SetPriorityGrouping(3);\n    NVIC_SetPriority(DMA1_Channel4_IRQn, 2);\n    NVIC_EnableIRQ(DMA1_Channel4_IRQn);\n\n}\n\n\/\/ \u6570\u636e\u4f20\u8f93\nvoid DMA1_Transmit(uint32_t srcAddr, uint32_t destAddr, uint16_t dataLen)\n{\n    \/\/ 1. \u8bbe\u7f6e\u5916\u8bbe\u5730\u5740\n    DMA1_Channel4->CPAR = destAddr;\n\n    \/\/ 2. \u8bbe\u7f6e\u5b58\u50a8\u5668\u5730\u5740\n    DMA1_Channel4->CMAR = srcAddr;\n\n    \/\/ 3. \u8bbe\u7f6e\u4f20\u8f93\u7684\u6570\u636e\u91cf\n    DMA1_Channel4->CNDTR = dataLen;\n\n    \/\/ 4. \u5f00\u542f\u901a\u9053\uff0c\u5f00\u59cb\u4f20\u8f93\u6570\u636e\n    DMA1_Channel4->CCR |= DMA_CCR4_EN;\n}\n\n\/\/ \u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\nvoid DMA1_Channel4_IRQHandler(void)\n{\n    \/\/ \u5224\u65ad\u4e2d\u65ad\u6807\u5fd7\u4f4d\n    if (DMA1->ISR & DMA_ISR_TCIF4)\n    {\n        \/\/ \u6e05\u9664\u4e2d\u65ad\u6807\u5fd7\u4f4d\n        DMA1->IFCR |= DMA_IFCR_CTCIF4;\n\n        \/\/ \u5173\u95edDMA\u901a\u9053\n        \/\/ DMA1_Channel4->CCR &= ~DMA_CCR4_EN;\n    }\n    \n}\n<\/code><\/pre>\n\n\n\n
        main.c<\/p>\n\n\n\n
        \/*\n * @Author: wushengran\n * @Date: 2024-05-23 15:14:48\n * @Description: \n * \n * Copyright (c) 2024 by atguigu, All Rights Reserved. \n *\/\n#include \"usart.h\"\n#include \"dma.h\"\n#include \"delay.h\"\n\n\/\/ \u5b9a\u4e49\u53d8\u91cf\u6570\u7ec4\uff0c\u653e\u7f6e\u5728RAM\u4e2d\uff0c\u7528\u6765\u5b58\u50a8\u63a5\u6536\u5230\u7684\u6570\u636e\nuint8_t src[4] = {'a','b','c','d'};\n\nint main(void)\n{\n\t\/\/ \u521d\u59cb\u5316\n\tUSART_Init();\n\tDMA1_Init();\n\n\tprintf(\"Hello, world!\\n\\n\");\n\tDelay_ms(1);\n\n\t\/\/ \u5f00\u542fDMA\u901a\u9053\u8fdb\u884c\u4f20\u8f93\n\tDMA1_Transmit((uint32_t)src, (uint32_t)&(USART1->DR), 4);\n\n\twhile(1)\n\t{}\n}\n<\/code><\/pre>\n\n\n\n
        hal\u5e93<\/h4>\n\n\n\n
          uint8_t str[] = {'a','b','c','d','e'};\n  HAL_UART_Transmit_DMA(&huart1,str,5);\n<\/code><\/pre>\n\n\n\n
        \u914d\u7f6e\u597d\u540e\uff0c\u4e24\u884c\u4ee3\u7801\u641e\u5b9a\u3002<\/p>\n\n\n\n
        ADC<\/h2>\n\n\n\n
        \u5bc4\u5b58\u5668<\/h3>\n\n\n\n
        adc.c<\/p>\n\n\n\n
        #include \"adc.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid ADC1_Init(void)\n{\n    \/\/ 1. \u65f6\u949f\u914d\u7f6e\n    RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;\n    \/\/ CFGR\uff1aADCPRE - 10\uff0c6\u5206\u9891\uff0c\u5f97\u5230 12MHz\n    RCC->CFGR |= RCC_CFGR_ADCPRE_1;\n    RCC->CFGR &= ~RCC_CFGR_ADCPRE_0;\n\n    \/\/ 2. GPIO\u5de5\u4f5c\u6a21\u5f0f\uff0cPC0\uff0c\u6a21\u62df\u8f93\u5165\uff0c00 00\n    GPIOC->CRL &= ~(GPIO_CRL_MODE0 | GPIO_CRL_CNF0);\n\n    \/\/ 3. ADC\u914d\u7f6e\n    \/\/ 3.1 \u5de5\u4f5c\u6a21\u5f0f\uff1a\u7981\u7528\u626b\u63cf\u6a21\u5f0f\n    ADC1->CR1 &= ~ADC_CR1_SCAN;\n\n    \/\/ 3.2 \u542f\u7528\u8fde\u7eed\u8f6c\u6362\u6a21\u5f0f(\u5355\u66f2\u5faa\u73af)\u3001\n    ADC1->CR2 |= ADC_CR2_CONT;\n\n    \/\/ 3.3 \u6570\u636e\u53f3\u5bf9\u9f50\uff08\u9ed8\u8ba4\uff09\n    ADC1->CR2 &= ~ADC_CR2_ALIGN;\n\n    \/\/ 3.4 \u8bbe\u7f6e\u901a\u905310\u7684\u91c7\u6837\u65f6\u95f4\uff0c001 - 7.5\u4e2a\u65f6\u949f\u5468\u671f\n    ADC1->SMPR1 &= ~ADC_SMPR1_SMP10;\n    ADC1->SMPR1 |= ADC_SMPR1_SMP10_0;\n\n    \/\/ 3.5 \u89c4\u5219\u7ec4\u901a\u9053\u5e8f\u5217\u914d\u7f6e\n    \/\/ 3.5.1 \u89c4\u5219\u7ec4\u4e2d\u7684\u901a\u9053\u4e2a\u6570 L\n    ADC1->SQR1 &= ~ADC_SQR1_L;\n\n    \/\/ 3.5.2 \u5c06\u901a\u9053\u53f7 10 \u4fdd\u5b58\u5230\u5e8f\u5217\u4e2d\u7684\u7b2c\u4e00\u4f4d\n    ADC1->SQR3 &= ~ADC_SQR3_SQ1;\n    ADC1->SQR3 |= 10 << 0;\n\n    \/\/ 3.5 \u9009\u62e9\u8f6f\u4ef6\u89e6\u53d1AD\u8f6c\u6362\n    \/\/ ADC1->CR2 |= ADC_CR2_EXTTRIG;\n    \/\/ ADC1->CR2 |= ADC_CR2_EXTSEL;    \/\/ \u9009\u62e9\u7684\u5c31\u662fSWSTART\u63a7\u5236AD\u8f6c\u6362\n}\n\n\/\/ \u5f00\u542f\u8f6c\u6362\nvoid ADC1_StartConvert(void)\n{\n    \/\/ 1. \u4e0a\u7535\u5524\u9192\n    ADC1->CR2 |= ADC_CR2_ADON;\n\n    \/\/ 2. \u6267\u884c\u6821\u51c6\n    ADC1->CR2 |= ADC_CR2_CAL;\n    \/\/ \u7b49\u5f85\u6821\u51c6\u5b8c\u6210\n    while (ADC1->CR2 & ADC_CR2_CAL)\n    {}\n\n    \/\/ 3. \u542f\u52a8\u8f6c\u6362\n    \/\/ ADC1->CR2 |= ADC_CR2_SWSTART;\n    ADC1->CR2 |= ADC_CR2_ADON;\n\n    \/\/ 4. \u7b49\u5f85\u8f6c\u6362\u5b8c\u6210\n    while ((ADC1->SR & ADC_SR_EOC) == 0)\n    {}\n}\n\n\/\/ \u8fd4\u56de\u8f6c\u6362\u540e\u7684\u6a21\u62df\u7535\u538b\u503c\ndouble ADC1_ReadV(void)\n{\n    return ADC1->DR * 3.3 \/ 4095;\n}\n<\/code><\/pre>\n\n\n\n
        main.c<\/p>\n\n\n\n
        #include \"usart.h\"\n#include \"adc.h\"\n#include \"delay.h\"\n\nint main(void)\n{\n\t\/\/ \u521d\u59cb\u5316\n\tUSART_Init();\n\tADC1_Init();\n\n\tprintf(\"Hello, world!\\n\");\n\n\t\/\/ \u5f00\u542fAD\u8f6c\u6362\n\tADC1_StartConvert();\n\n\twhile(1)\n\t{\n\t\t\/\/ \u5411\u4e32\u53e3\u53d1\u9001\u6253\u5370\u8f6c\u6362\u7ed3\u679c\n\t\tprintf(\"V = %.2f\\n\", ADC1_ReadV());\n\t\tDelay_ms(1000);\n\t}\n}\n<\/code><\/pre>\n\n\n\n
        hal\u5e93<\/h3>\n\n\n\n
          printf(\"hello,world\\n\");\n  \/\/\u5f00\u542f\u6821\u51c6\n  HAL_ADCEx_Calibration_Start(&hadc1);\n  \/\/\u542f\u52a8ADC\n  HAL_ADC_Start(&hadc1);\n\n  while (1)\n  {\n    \/\/ \u83b7\u53d6\u8f6c\u6362\u7ed3\u679c\uff0c\u8fdb\u884c\u8ba1\u7b97\n    double v = HAL_ADC_GetValue(&hadc1)*3.3\/4095;\n    printf(\"%.2f\",v);\n    HAL_Delay(500);\n    \n    \/* USER CODE END WHILE *\/\n\n    \/* USER CODE BEGIN 3 *\/\n  }\n<\/code><\/pre>\n\n\n\n
        tips:<\/p>\n\n\n\n
        \u5728GPIO\u4e2d\u8f93\u5165\u6a21\u5f0f\u53ef\u4ee5\u4e0d\u7528\u914d\u7f6e\u65f6\u949f\uff0c\u56e0\u4e3a\u5e95\u5c42\u7684\u7535\u8def\u5c31\u662f\u901a\u7684<\/p>\n\n\n\n
        \u8981\u628a\u83b7\u53d6\u7ed3\u679c\u653e\u5230while\u5faa\u73af\u4e2d\u5e76\u4e14\u6253\u5370\uff0c\u4e0d\u80fd\u628a\u83b7\u53d6\u7ed3\u679c\u653e\u5728while\u5916\u9762\uff0c\u7136\u540e\u518d\u8f6e\u8be2\u6253\u5370\u3002<\/p>\n\n\n\n
        \u6821\u51c6\u9700\u8981\u65f6\u95f4\u7684\u3002<\/p>\n\n\n\n
        SPI<\/h2>\n\n\n\n
        SP1_W25Q32\u82af\u7247(NOR FLASH)<\/h3>\n\n\n\n
        \u8f6f\u4ef6\u6a21\u62df<\/p>\n\n\n\n
        w25q32.c<\/p>\n\n\n\n
        \/*\n * @Author: wushengran\n * @Date: 2024-06-12 15:54:23\n * @Description:\n *\n * Copyright (c) 2024 by atguigu, All Rights Reserved.\n *\/\n#include \"w25q32.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid W25Q32_Init(void)\n{\n    SPI_Init();\n}\n\n\/\/ \u8bfb\u53d6ID\nvoid W25Q32_ReadID(uint8_t *mid, uint16_t *did)\n{\n    SPI_Start();\n\n    \/\/ 1. \u53d1\u9001\u6307\u4ee4 9fh\n    SPI_SwapByte(0x9f);\n\n    \/\/ 2. \u83b7\u53d6\u5236\u9020\u5546ID\uff08\u4e3a\u4e86\u8bfb\u53d6\u6570\u636e\uff0c\u53d1\u9001\u4ec0\u4e48\u4e0d\u91cd\u8981\uff09\n    *mid = SPI_SwapByte(0xff);\n\n    \/\/ 3. \u83b7\u53d6\u8bbe\u5907ID\n    *did = 0;\n    *did |= SPI_SwapByte(0xff) << 8;\n    *did |= SPI_SwapByte(0xff) & 0xff;\n\n    SPI_Stop();\n}\n\n\/\/ \u5f00\u542f\u5199\u4f7f\u80fd\nvoid W25Q32_WriteEnable(void)\n{\n    SPI_Start();\n    SPI_SwapByte(0x06);\n    SPI_Stop();\n}\n\n\/\/ \u5173\u95ed\u5199\u4f7f\u80fd\nvoid W25Q32_WriteDisable(void)\n{\n    SPI_Start();\n    SPI_SwapByte(0x04);\n    SPI_Stop();\n}\n\n\/\/ \u7b49\u5f85\u72b6\u6001\u4e0d\u4e3a\u5fd9\uff08busy\uff09\nvoid W25Q32_WaitNotBusy(void)\n{\n    SPI_Start();\n\n    \/\/ \u53d1\u9001\u8bfb\u53d6\u72b6\u6001\u5bc4\u5b58\u5668\u6307\u4ee4\n    SPI_SwapByte(0x05);\n\n    \/\/ \u7b49\u5f85\u6536\u5230\u7684\u6570\u636e\u672b\u4f4d\u53d8\u62100\n    while (SPI_SwapByte(0xff) & 0x01)\n    {\n    }\n\n    SPI_Stop();\n}\n\n\/\/ \u64e6\u9664\u6bb5\uff08sector erase\uff09,\u5730\u5740\u53ea\u9700\u8981\u5757\u53f7\u548c\u6bb5\u53f7\nvoid W25Q32_EraseSector(uint8_t block, uint8_t sector)\n{\n    \/\/ \u9996\u5148\u7b49\u5f85\u72b6\u6001\u4e0d\u4e3a\u5fd9\n    W25Q32_WaitNotBusy();\n\n    \/\/ \u5f00\u542f\u5199\u4f7f\u80fd\n    W25Q32_WriteEnable();\n\n    \/\/ \u8ba1\u7b97\u8981\u53d1\u9001\u7684\u5730\u5740\uff08\u6bb5\u9996\u5730\u5740\uff09\n    uint32_t addr = (block << 16) + (sector << 12);\n\n    SPI_Start();\n\n    \/\/ \u53d1\u9001\u6307\u4ee4\n    SPI_SwapByte(0x20);\n\n    SPI_SwapByte(addr >> 16 & 0xff); \/\/ \u7b2c\u4e00\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 8 & 0xff);  \/\/ \u7b2c\u4e8c\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 0 & 0xff);  \/\/ \u7b2c\u4e09\u4e2a\u5b57\u8282\n\n    SPI_Stop();\n\n    W25Q32_WriteDisable();\n}\n\n\/\/ \u5199\u5165\uff08\u9875\u5199\uff09\nvoid W25Q32_PageWrite(uint8_t block, uint8_t sector, uint8_t page, uint8_t *data, uint16_t len)\n{\n    \/\/ \u9996\u5148\u7b49\u5f85\u72b6\u6001\u4e0d\u4e3a\u5fd9\n    W25Q32_WaitNotBusy();\n\n    \/\/ \u5f00\u542f\u5199\u4f7f\u80fd\n    W25Q32_WriteEnable();\n\n    \/\/ \u8ba1\u7b97\u8981\u53d1\u9001\u7684\u5730\u5740\uff08\u9875\u9996\u5730\u5740\uff09\n    uint32_t addr = (block << 16) + (sector << 12) + (page << 8);\n\n    SPI_Start();\n\n    \/\/ \u53d1\u9001\u6307\u4ee4\n    SPI_SwapByte(0x02);\n\n    \/\/ \u53d1\u900124\u4f4d\u5730\u5740\n    SPI_SwapByte(addr >> 16 & 0xff); \/\/ \u7b2c\u4e00\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 8 & 0xff);  \/\/ \u7b2c\u4e8c\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 0 & 0xff);  \/\/ \u7b2c\u4e09\u4e2a\u5b57\u8282\n\n    \/\/  \u4f9d\u6b21\u53d1\u9001\u6570\u636e\n    for (uint16_t i = 0; i < len; i++)\n    {\n        SPI_SwapByte(data[i]);\n    }\n\n    SPI_Stop();\n\n    W25Q32_WriteDisable();\n}\n\n\/\/ \u8bfb\u53d6\nvoid W25Q32_Read(uint8_t block, uint8_t sector, uint8_t page, uint8_t innerAddr, uint8_t *buffer, uint16_t len)\n{\n    \/\/ \u9996\u5148\u7b49\u5f85\u72b6\u6001\u4e0d\u4e3a\u5fd9\n    W25Q32_WaitNotBusy();\n\n    \/\/ \u8ba1\u7b97\u8981\u53d1\u9001\u7684\u5730\u5740\n    uint32_t addr = (block << 16) + (sector << 12) + (page << 8) + innerAddr;\n\n    SPI_Start();\n\n    \/\/ \u53d1\u9001\u6307\u4ee4\n    SPI_SwapByte(0x03);\n\n    \/\/ \u53d1\u900124\u4f4d\u5730\u5740\n    SPI_SwapByte(addr >> 16 & 0xff); \/\/ \u7b2c\u4e00\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 8 & 0xff);  \/\/ \u7b2c\u4e8c\u4e2a\u5b57\u8282\n    SPI_SwapByte(addr >> 0 & 0xff);  \/\/ \u7b2c\u4e09\u4e2a\u5b57\u8282\n\n    \/\/  \u4f9d\u6b21\u8bfb\u53d6\u6570\u636e\n    for (uint16_t i = 0; i < len; i++)\n    {\n        buffer[i] = SPI_SwapByte(0xff);\n    }\n\n    SPI_Stop();\n}\n\n<\/code><\/pre>\n\n\n\n
        spi.c<\/p>\n\n\n\n
        #include \"spi.h\"\n\n\/\/ \u521d\u59cb\u5316\nvoid SPI_Init(void)\n{\n    \/\/ 1. \u5f00\u542f\u65f6\u949f\n    RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;\n    RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;\n\n    \/\/ 2. GPIO\u5de5\u4f5c\u6a21\u5f0f\n    \/\/ PA5\u3001PA7\u3001PC13\uff1a\u901a\u7528\u63a8\u633d\u8f93\u51fa\uff0cCNF = 00\uff0cMODE = 11\n    GPIOC->CRH |= GPIO_CRH_MODE13;\n    GPIOC->CRH &= ~GPIO_CRH_CNF13;\n\n    GPIOA->CRL |= GPIO_CRL_MODE5;\n    GPIOA->CRL &= ~GPIO_CRL_CNF5;\n\n    GPIOA->CRL |= GPIO_CRL_MODE7;\n    GPIOA->CRL &= ~GPIO_CRL_CNF7;\n\n    \/\/ PA6\uff1aMISO\uff0c\u6d6e\u7a7a\u8f93\u5165\uff0cCNF = 01\uff0cMODE = 00\n    GPIOA->CRL &= ~GPIO_CRL_MODE6;\n    GPIOA->CRL &= ~GPIO_CRL_CNF6_1;\n    GPIOA->CRL |= GPIO_CRL_CNF6_0;\n\n    \/\/ 3. \u9009\u62e9SPI\u7684\u5de5\u4f5c\u6a21\u5f0f 0\uff1aSCK\u7a7a\u95f20\n    SCK_LOW;\n\n    \/\/ 4. \u7247\u9009\u4e0d\u4f7f\u80fd\n    CS_HIGH;\n\n    \/\/ 5. \u5ef6\u65f6\n    SPI_DELAY;\n}\n\n\/\/ \u6570\u636e\u4f20\u8f93\u7684\u5f00\u59cb\u548c\u7ed3\u675f\nvoid SPI_Start(void)\n{\n    CS_LOW;\n}\nvoid SPI_Stop(void)\n{\n    CS_HIGH;\n}\n\n\/\/ \u4e3b\u4ece\u8bbe\u5907\u4ea4\u6362\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u636e\nuint8_t SPI_SwapByte(uint8_t byte)\n{\n    \/\/ \u5b9a\u4e49\u53d8\u91cf\u4fdd\u5b58\u63a5\u6536\u5230\u7684\u5b57\u8282\n    uint8_t rByte = 0x00;\n\n    \/\/ \u7528\u4e00\u4e2a\u5faa\u73af\uff0c\u4f9d\u6b21\u4ea4\u63628\u4f4d\u6570\u636e\n    for (uint8_t i = 0; i < 8; i++)\n    {\n        \/\/ 1. \u5148\u51c6\u5907\u8981\u53d1\u9001\u7684\u6570\u636e(\u6700\u9ad8\u4f4d)\uff0c\u9001\u5230MOSI\n        if (byte & 0x80)\n        {\n            MOSI_HIGH;\n        }\n        else\n        {\n            MOSI_LOW;\n        }\n\n        \/\/ \u5de6\u79fb\u4e00\u4f4d\n        byte <<= 1;\n\n        \/\/ 2. \u62c9\u9ad8\u65f6\u949f\u4fe1\u53f7\uff0c\u5f62\u6210\u4e00\u4e2a\u4e0a\u5347\u6cbf\n        SCK_HIGH;\n        SPI_DELAY;\n\n        \/\/ 3. \u5728MISO\u4e0a\u91c7\u6837Flash\u4f20\u6765\u7684\u6570\u636e\n        \/\/ \u5148\u505a\u5de6\u79fb\n        rByte <<= 1;\n\n        if (MISO_READ)\n        {\n            rByte |= 0x01;\n        }\n\n        \/\/ 4. \u62c9\u4f4e\u65f6\u949f\uff0c\u4e3a\u4e0b\u6b21\u6570\u636e\u4f20\u8f93\u505a\u51c6\u5907\n        SCK_LOW;\n        SPI_DELAY;\n    }\n\n    return rByte;\n}\n<\/code><\/pre>\n\n\n\n
        main.c<\/p>\n\n\n\n
        #include \"usart.h\"\n#include \"w25q32.h\"\n#include <string.h>\nint main(void)\n{\n\t\/\/ 1. \u521d\u59cb\u5316\n\tUSART_Init();\n\tW25Q32_Init();\n\n\tprintf(\"\u5c1a\u7845\u8c37SPI\u8f6f\u4ef6\u6a21\u62df\u5b9e\u9a8c\u5f00\u59cb...\\n\");\n\n\t\/\/ 2. \u8bfb\u53d6ID\u8fdb\u884c\u6d4b\u8bd5\n\tuint8_t mid = 0;\n\tuint16_t did = 0;\n\tW25Q32_ReadID(&mid, &did);\n\tprintf(\"mid = %#x, did = %#x\\n\", mid, did);\n\n\t\/\/ 3. \u6bb5\u64e6\u9664\n\tW25Q32_EraseSector(0, 0);\n\n\t\/\/ 4. \u9875\u5199\n\tW25Q32_PageWrite(0, 0, 0, \"12345678\", 8);\n\n\t\/\/ 5. \u8bfb\u53d6\n\tuint8_t buffer[10] = {0};\n\tW25Q32_Read(0, 0, 0, 2, buffer, 6);\n\n\tprintf(\"buffer = %s\\n\", buffer);\n\n\twhile (1)\n\t{\n\t}\n}\n<\/code><\/pre>\n\n\n\n
        FSMC(\u7075\u6d3b\u7684\u9759\u6001\u5b58\u50a8\u5668\u63a7\u5236\u5668)<\/h2>\n\n\n\n
        \u5728\u6211\u4eec\u6269\u5c55\u7684sram\u91cc\u9762\u60f3\u5199\u5165\u6570\u636e\u8fdb\u884c\u6d4b\u8bd5\uff0c\u600e\u4e48\u751f\u6210\u7684\u53d8\u91cf\u6307\u5b9a\u653e\u5230\u6269\u5c55\u533a\u57df\u5462<\/p>\n\n\n\n
        \u53ef\u4ee5\u4f7f\u7528\u5173\u952e\u5b57attribute<\/strong><\/p>\n\n\n\n
        uint8_t v1 __attribute__ ((at(0x68000000)));\nv1 = 10 ;\n\/\/\u5fc5\u987b\u662f\u5168\u5c40\u53d8\u91cf\uff0c\u53ea\u80fd\u5355\u72ec\u58f0\u660e\uff0c\u4e0d\u80fd\u540c\u65f6\u8d4b\u503c\uff0c\u7ed9\u7684\u5730\u5740\u5fc5\u987b\u662f4\u7684\u6574\u6570\uff0c\u5185\u5b58\u5bf9\u9f50\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
        \u5916\u90e8\u4e2d\u65ad \u5916\u90e8\u4e2d\u65ad\u7684\u5bc4\u5b58\u5668\u914d\u7f6e\uff1a hal\u5e93 \u4e0a\u9762\u7684\u4ee3\u7801\u662f\u5728hal\u5e93\u91cc\u9762\u7684\uff0c\u5728EXTI15_10_IRQHand […]<\/p>\n","protected":false},"author":1,"featured_media":149,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,1],"tags":[18,16,17],"class_list":["post-148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-essay","category-lern","tag-hal","tag-stm32","tag-17"],"_links":{"self":[{"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/posts\/148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codecraft.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=148"}],"version-history":[{"count":1,"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/posts\/148\/revisions"}],"predecessor-version":[{"id":150,"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/posts\/148\/revisions\/150"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/codecraft.xin\/index.php?rest_route=\/wp\/v2\/media\/149"}],"wp:attachment":[{"href":"https:\/\/codecraft.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codecraft.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codecraft.xin\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}