[求助] 求救，想用HAL的I2C來讀取BMA250E的ChipID。到底是哪裡寫錯了呢?

Elecbuggy 2016-7-6 16:55 楼主

大家好，我用的版子是STM32F429I DISCOVERY，目前在學習HAL庫的I2C用法。

想要讀取BOSCH 的BMA250E 這個G-sensor的 CHIP_ID，請幫我看一下我哪裡寫錯了呢?? 資料完全無法讀寫的感覺。
chip id 是一個固定的值0XF9
BMA250E的I2C位置是0X18
CHIP_ID的唯讀暫存器位置是0X00

#include "stm32f4xx_hal.h"
static void SystemClock_Config(void);
#define I2C_ADDRESS 0x18
uint8_t aTxBuffer[2],aRxBuffer;
int main(){
HAL_Init();
SystemClock_Config();
I2C_HandleTypeDef I2cHandle;
/*##-1- Configure the I2C peripheral #######################################*/
I2cHandle.Instance = I2C1;
I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
I2cHandle.Init.ClockSpeed = 400000;
I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
I2cHandle.Init.OwnAddress1 = 0;
I2cHandle.Init.OwnAddress2 = 0;
HAL_I2C_Init(&I2cHandle);
aTxBuffer[0]=0x00;
HAL_I2C_Master_Transmit(&I2cHandle, I2C_ADDRESS,aTxBuffer, 1, 10000);
HAL_I2C_Master_Receive(&I2cHandle,I2C_ADDRESS|0x01 ,&aRxBuffer, 1, 10000);
HAL_Delay(1000);
}
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* Activate the Over-Drive mode */
HAL_PWREx_EnableOverDrive();
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}
#define I2Cx_CLK_ENABLE() __HAL_RCC_I2C1_CLK_ENABLE()
#define I2Cx_SDA_GPIO_CLK_ENABLE() __HAL_RCC_GPIOB_CLK_ENABLE()
#define I2Cx_SCL_GPIO_CLK_ENABLE() __HAL_RCC_GPIOB_CLK_ENABLE()
#define I2Cx_FORCE_RESET() __HAL_RCC_I2C1_FORCE_RESET()
#define I2Cx_RELEASE_RESET() __HAL_RCC_I2C1_RELEASE_RESET()
/* Definition for I2Cx Pins */
#define I2Cx_SCL_PIN GPIO_PIN_6
#define I2Cx_SCL_GPIO_PORT GPIOB
#define I2Cx_SCL_AF GPIO_AF4_I2C1
#define I2Cx_SDA_PIN GPIO_PIN_9
#define I2Cx_SDA_GPIO_PORT GPIOB
#define I2Cx_SDA_AF GPIO_AF4_I2C1
void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct;
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* Enable GPIO TX/RX clock */
I2Cx_SCL_GPIO_CLK_ENABLE();
I2Cx_SDA_GPIO_CLK_ENABLE();
/* Enable I2C1 clock */
I2Cx_CLK_ENABLE();
/*##-2- Configure peripheral GPIO ##########################################*/
/* I2C TX GPIO pin configuration */
GPIO_InitStruct.Pin = I2Cx_SCL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = I2Cx_SCL_AF;
HAL_GPIO_Init(I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct);
/* I2C RX GPIO pin configuration */
GPIO_InitStruct.Pin = I2Cx_SDA_PIN;
GPIO_InitStruct.Alternate = I2Cx_SDA_AF;
HAL_GPIO_Init(I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct);
}
/**
* @brief I2C MSP De-Initialization
* This function frees the hardware resources used in this example:
* - Disable the Peripheral's clock
* - Revert GPIO, DMA and NVIC configuration to their default state
* @param hi2c: I2C handle pointer
* @retval None
*/
void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c)
{
/*##-1- Reset peripherals ##################################################*/
I2Cx_FORCE_RESET();
I2Cx_RELEASE_RESET();
/*##-2- Disable peripherals and GPIO Clocks ################################*/
/* Configure I2C Tx as alternate function */
HAL_GPIO_DeInit(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN);
/* Configure I2C Rx as alternate function */
HAL_GPIO_DeInit(I2Cx_SDA_GPIO_PORT, I2Cx_SDA_PIN);
}