使用STM32F070CB控制BH1750测量光照,网上找了个例程,可以调试一直卡在了 while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TXIS) == RESET);这个位置,之前F103用的多,070还是第一次用,也没有开发资料。哪位仁兄有过类似经验,给帮忙看看啊,不胜感激~#define DVI_1 GPIO_SetBits(GPIOB, GPIO_Pin_5); //BH1750的DVI控制
#define DVI_0 GPIO_ResetBits(GPIOB, GPIO_Pin_5);
#define SlaveAddress 0xB8 //BH1750地址
#define BH1750FVI_POWER_DOWM 0x00 //BH1750寄存器地址
#define BH1750FVI_POWER_ON 0x01
#define BH1750FVI_RESET 0x07
#define BH1750FVI_CONTINUOUSLY_H_RESOLUTION_MODE 0x10
#define BH1750FVI_CONTINUOUSLY_H_RESOLUTION_MODE2 0x11
#define BH1750FVI_CONTINUOUSLY_L_RESOLUTION_MODE 0x13
#define BH1750FVI_ONE_TIME_H_RESOLUTION_MODE 0x20
#define BH1750FVI_ONE_TIME_H_RESOLUTION_MODE2 0X21
#define BH1750FVI_ONE_TIME_L_RESOLUTION_MODE 0x23
main()
{
DVI_0;
LED_Delay(0x0FFFFF);
DVI_1;
Single_Write_BH1750(BH1750FVI_POWER_ON);
Single_Write_BH1750(BH1750FVI_CONTINUOUSLY_H_RESOLUTION_MODE);
while (1)
{
Light = Read_BH1750();
LED_Delay(0x0FFFFF);
}
}
void Single_Write_BH1750(uint8_t REG_Data)
{
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) != RESET);//检测是否总线忙
I2C_TransferHandling(I2C1,SlaveAddress,1,I2C_SoftEnd_Mode,I2C_Generate_Start_Write);
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TXIS) == RESET);// 检测发送,卡在了这个位置
I2C_SendData(I2C1,REG_Data);
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_TC) == RESET);
I2C_GenerateSTOP(I2C1,ENABLE);
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF) == RESET);//是否停止
}
uint16_t Read_BH1750()
{
uint16_t Recev = 0x00;//光强为16位。先发送高8后低8
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) != RESET);//IF BUSY
I2C_TransferHandling(I2C1,SlaveAddress+1,2,I2C_AutoEnd_Mode,I2C_Generate_Start_Read);//这里设置后就不需要 I2C_GenerateSTOP 了
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_RXNE) == RESET);
Recev |= I2C_ReceiveData(I2C1);Recev<<=8;
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_RXNE) == RESET);
Recev |= I2C_ReceiveData(I2C1);
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF) == RESET);
return Recev;
}
void I2C_EEPROM_24C0x_Init(void)
{
I2C_InitTypeDef I2C_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
I2C_EEPROM_24C0x_DeInit();
/* sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
/* sEE_I2C Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
/* Connect PXx to I2C_SCL*/
GPIO_PinAFConfig(sEE_I2C1_PORT, GPIO_PinSource6, GPIO_AF_1);
/* Connect PXx to I2C_SDA*/
GPIO_PinAFConfig(sEE_I2C1_PORT, GPIO_PinSource7, GPIO_AF_1);
/* GPIO configuration */
/* Configure sEE_I2C pins: SCL */
/***
GPIO_InitStructure.GPIO_Pin = I2C1_SCL;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(sEE_I2C1_PORT, &GPIO_InitStructure);
/* Configure sEE_I2C pins: SDA */
//GPIO_InitStructure.GPIO_Pin = I2C1_SDA;
//GPIO_Init(sEE_I2C1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = I2C1_SCL | I2C1_SDA;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//这个我觉得影响不大,只要是推挽模式这个可以换成NOPULL
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* I2C configuration */
/* sEE_I2C configuration */
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
I2C_InitStructure.I2C_DigitalFilter = 0x00;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_Timing = sEE_I2C_TIMING;
/* Apply sEE_I2C configuration after enabling it */
I2C_Init(I2C1, &I2C_InitStructure);
/* sEE_I2C Peripheral Enable */
I2C_Cmd(I2C1, ENABLE);
/*选择要控制BH1750的DVI引脚*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
/*设置要控制的GPIOB引脚为输出模式*/
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_OUT;
/*设置引脚速率为50MHz */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
/*设置引脚模式为通用推挽输出*/
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
/*设置引脚模式为无上下拉*/
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
/*调用库函数,初始化GPIOB*/
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
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