stm32f030f4这个i2c就是配置不出数据

cornrn · 发表于 2015-4-21 09:46:40

d当然复用时钟别处也开了

cornrn · 发表于 2015-4-21 09:46:41

回复【3楼】正点原子:
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谢谢，已经解决了，STM32F030的硬件IIC还是比较好的，比STM32F103好还多一个功能

cornrn · 发表于 2015-4-21 09:47:16

这是器件引脚图

正点原子 · 发表于 2015-4-21 23:53:13

帮顶。。。。。

cornrn · 发表于 2015-4-24 14:40:01

家里电器东西买回来不过大小买回来就别想被淘汰了，老婆扔了我也会捡回来修修继续用，不管电视电脑电动车还是监控还是手机玩具要是坏了，我就莫名的窃喜又可以拆下来修修了。不知道坛里多少人和我一样

505062593 · 发表于 2015-12-7 16:07:13

回复【2楼】cornrn:
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请问你是怎么解决的啊?

cornrn · 发表于 2015-12-9 13:28:06

回复【6楼】505062593:
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看楼下我回复，看我配置

cornrn · 发表于 2015-12-9 13:29:19

[mw_shl_code=c,true]#include "bsp_i2c.h" uint32_t I2C_Timeout; void I2C_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; I2C_InitTypeDef I2C_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE); /* Configure the I2C clock source. The clock is derived from the SYSCLK */ RCC_I2CCLKConfig(RCC_I2C1CLK_SYSCLK); RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); /* Connect PA9 to I2C_SCL */ GPIO_PinAFConfig(GPIOA,GPIO_PinSource9, GPIO_AF_4); /* Configure PA10 pins: SDA */ GPIO_PinAFConfig(GPIOA,GPIO_PinSource10, GPIO_AF_4); /* Configure PA9 pins: SCL */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_OType = GPIO_OType_OD; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable; I2C_InitStructure.I2C_DigitalFilter = 0x00; I2C_InitStructure.I2C_OwnAddress1 = 0x00; I2C_InitStructure.I2C_Ack = I2C_Ack_Disable; I2C_InitStructure.I2C_Timing = I2C_TIMING; /* Apply I2C1 configuration after enabling it */ I2C_Init(I2C1, &I2C_InitStructure); /* I2C1 Peripheral Enable */ I2C_Cmd(I2C1, ENABLE); } /** * @brief 从I2C1总线上的某一器件的某一起始地址中读取一定字节的数据到数组中 * @param driver_Addr：I2C器件地址 * @param start_Addr：起始字节地址 * @param number_Bytes：要读取的字节数量（小于一页） * @param read_Buffer：存放读取数据的数组指针 * @retval 是否读取成功 */ I2C_Status I2C1_Read_NBytes(uint8_t driver_Addr, uint8_t start_Addr, uint8_t number_Bytes, uint8_t *read_Buffer) { uint8_t read_Num; I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) != RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } I2C_TransferHandling(I2C1, driver_Addr, 1, I2C_SoftEnd_Mode, I2C_Generate_Start_Write); I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TXIS) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } I2C_SendData(I2C1, start_Addr); I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TC) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } I2C_TransferHandling(I2C1, driver_Addr, number_Bytes, I2C_AutoEnd_Mode, I2C_Generate_Start_Read); for(read_Num = 0; read_Num < number_Bytes; read_Num++) { I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_RXNE) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } read_Buffer[read_Num] = I2C_ReceiveData(I2C1); } I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } return I2C_OK; } /** * @brief 从I2C1的总线上的某一器件的某一起始地址中读取一定字节的数据到数组中 * @param driver_Addr：I2C器件地址 * @param start_Addr：起始字节地址 * @param number_Bytes：要读取的字节数量（小于一页） * @param write_Buffer：存放读取数据的数组指针 * @retval 是否读取成功 */ I2C_Status I2C1_Write_NBytes(uint8_t driver_Addr, uint8_t start_Addr, uint8_t number_Bytes, uint8_t *write_Buffer) { uint8_t write_Num; I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) != RESET) { if((I2C_Timeout--) == 0) { printf("I2C_FLAG_BUSY\n"); return I2C_FAIL; } } I2C_TransferHandling(I2C1, driver_Addr, 1, I2C_Reload_Mode, I2C_Generate_Start_Write); I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TXIS) == RESET) { if((I2C_Timeout--) == 0) { printf("I2C_FLAG_TXIS\n"); return I2C_FAIL; } } I2C_SendData(I2C1, start_Addr); I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TCR) == RESET) { if((I2C_Timeout--) == 0) { printf("I2C_FLAG_TCR\n"); return I2C_FAIL; } } I2C_TransferHandling(I2C1, driver_Addr, number_Bytes, I2C_AutoEnd_Mode, I2C_No_StartStop); for(write_Num = 0; write_Num < number_Bytes; write_Num++) { I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TXIS) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } I2C_SendData(I2C1, write_Buffer[write_Num]); } I2C_Timeout = I2C_TIMEOUT; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF) == RESET) { if((I2C_Timeout--) == 0) { return I2C_FAIL; } } return I2C_OK; } /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ [/mw_shl_code]

cornrn · 发表于 2015-12-9 13:30:05

[mw_shl_code=c,true] #ifndef _BSP_I2C_H #define _BSP_I2C_H #include "stm32f0xx.h" #include <stdio.h> #include "stm32f0xx_i2c.h" /* Exported types ------------------------------------------------------------*/ typedef enum { I2C_FAIL = 0, I2C_OK = 1 }I2C_Status; /* Exported constants --------------------------------------------------------*/ #define I2C_TIMING 0x00310309 #define I2C_TIMEOUT 0x10000 /* Exported macro ------------------------------------------------------------*/ /* Exported functions ------------------------------------------------------- */ void I2C1_Init_Config(void); I2C_Status I2C1_Read_NBytes(uint8_t driver_Addr, uint8_t start_Addr, uint8_t number_Bytes, uint8_t *read_Buffer); I2C_Status I2C1_Write_NBytes(uint8_t driver_Addr, uint8_t start_Addr, uint8_t number_Bytes, uint8_t *write_Buffer); extern void I2C_Configuration(void); #endif /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ [/mw_shl_code]