Hello~friends! How are you today?
I am not very good because I met some troubles when doing my pprogram. So here I am to ask your guys some advice.
I’m involved in a project that writing program into ADS8328(this is ADS8328's PDF ) by using STM32F103. I have been trying it for over weeks. I’m almost losing heart now.
I can’t really find what’s wrong!Code:#include "ADS8328.h"
void ADS8328_SPI_GPIO_Config(void)
{
* * * * /* defined GPI Ostructural body */
**GPIO_InitTypeDef**GPIO_InitStructure;*
* * * **
**/* start GPIO clock */
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_CS_CLK, ENABLE );
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_SCK_CLK, ENABLE );
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_MISO_CLK, ENABLE );
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_MOSI_CLK, ENABLE );
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_EOC_CLK, ENABLE );
* * * * ADS8328_SPI_GPIO_APBxClock_FUN ( ADS8328_SPI_CONVST_CLK, ENABLE );
* * * **
* * * * /* ADS8328_SPI_CS_PIN Pin initialization，and set it to be push-pull output */
* * * * GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_CS_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;* * * ** ** ***
**GPIO_Init(ADS8328_SPI_CS_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_SCK_PIN Pin initialization，and set it to be push-pull output */
**GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_SCK_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;* * * ** ** ***
**GPIO_Init(ADS8328_SPI_SCK_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_MOSI_PIN Pin initialization，and set it to be push-pull output */
* * * * GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_MOSI_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;* * * ** ** ***
**GPIO_Init(ADS8328_SPI_MOSI_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_MISO_PIN Pin initialization，and set it to be push-pull output */
* * * * GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_MISO_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
**GPIO_Init(ADS8328_SPI_MISO_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_CONVST_PIN Pin initialization，and set it to be push-pull output */
* * * * GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_CONVST_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
**GPIO_Init(ADS8328_SPI_CONVST_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_EOC_PIN Pin initialization，and set it to be push-pull output */
**GPIO_InitStructure.GPIO_Pin = ADS8328_SPI_EOC_PIN;
**GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
**GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
**GPIO_Init(ADS8328_SPI_EOC_PORT, &GPIO_InitStructure);
* * * **
* * * * /* ADS8328_SPI_CS_HIGH is high level */
* * * * ADS8328_SPI_CS_HIGH;
* * * **
* * * * /* ADS8328_SPI_CONVST_HIGH is high level */
* * * * ADS8328_SPI_CONVST_HIGH;
* * * **
* * * * /* 延迟500ms */
* * * * SysTick_Delay_ms(500);
* * * **
}
uint8_t ADS8328_SPI_Send4Bits(uint8_t data)
{
**uint8_t num = 0;
**int i = 0;
**data &= 0x0F;
* * * * for(i=0;i<4;i++)
* * * * {
* * * * * * * * num <<= 1;
* * * * * * * * ADS8328_SPI_SCK_HIGH;
* * * * * * * * if((data & 0x08) >> 3)
* * * * * * * * {
* * * * * * * * * * * * ADS8328_SPI_MOSI_HIGH;
* * * * * * * * }
* * * * * * * * else
* * * * * * * * {
* * * * * * * * * * * * ADS8328_SPI_MOSI_LOW;
* * * * * * * * }
* * * * * * * * if(ADS8328_SPI_MISO_READ)
* * * * * * * * {
* * * * * * * * * * * * num++;
* * * * * * * * }
* * * * * * * * SysTick_Delay_us(5);
* * * * * * * * ADS8328_SPI_SCK_LOW;
* * * * * * * * SysTick_Delay_us(5);
* * * * * * * * data <<= 1;
* * * * }
* * * * SysTick_Delay_us(5);
* * * * return(num);
}
unsigned int ADS8328_SPI_Send16Bits(unsigned int data)
{
* * * * unsigned int num = 0;
* * * * int i = 16;
* * * * while(i--)
* * * * {
* * * * * * * * num <<= 1;
* * * * * * * * ADS8328_SPI_SCK_HIGH;
* * * * * * * * if((data & 0x8000) >> 15)
* * * * * * * * {
* * * * * * * * * * * * ADS8328_SPI_MOSI_HIGH;
* * * * * * * * }
* * * * * * * * else
* * * * * * * * {
* * * * * * * * * * * * ADS8328_SPI_MOSI_LOW;
* * * * * * * * }
* * * * * * * * if(ADS8328_SPI_MISO_READ)
* * * * * * * * {
* * * * * * * * * * * * num++;
* * * * * * * * }
* * * * * * * * SysTick_Delay_us(5);
* * * * * * * * ADS8328_SPI_SCK_LOW;
* * * * * * * * SysTick_Delay_us(5);
* * * * * * * * data <<= 1;
* * * * }
* * * * SysTick_Delay_us(5);
* * * * return(num);
}
unsigned int ADS8328_SPI_ReadHalfWord(void)
{
* * * * unsigned int num = 0;
* * * * int i = 16;
* * * * while(i--)
* * * * {
* * * * * * * * num <<= 1;
* * * * * * * * ADS8328_SPI_SCK_HIGH;
* * * * * * * * if(ADS8328_SPI_MISO_READ)
* * * * * * * * {
* * * * * * * * * * * * num++;
* * * * * * * * }
* * * * * * * * ADS8328_SPI_SCK_LOW;
* * * * }
* * * * SysTick_Delay_us(5);
* * * * return(num);
}
void ADS8328_Write_CFR(unsigned int data)
{
* * * * ADS8328_SPI_CS_LOW;
* * * * ADS8328_SPI_Send16Bits(data);
* * * * ADS8328_SPI_CS_HIGH;
}
void ADS8328_Read_CFR(unsigned int *data1)
{
* * * * ADS8328_SPI_CS_LOW;
* * * * *data1 = ADS8328_SPI_Send16Bits(0xC000)&0x0FFF;
* * * * ADS8328_SPI_CS_HIGH;
}
unsigned int ADS8328_Read_Data(void)
{
* * * * unsigned int ret = 0;
* * * * ADS8328_SPI_CS_LOW;
* * * * SysTick_Delay_us(3);
* * * * ADS8328_SPI_CS_HIGH;
* * * **
* * * * while(!ADS8328_SPI_EOC);
* * * **
* * * * ADS8328_SPI_CONVST_LOW;
* * * * SysTick_Delay_us(1);
* * * * ADS8328_SPI_CONVST_HIGH;
* * * **
* * * * ADS8328_SPI_CS_LOW;
* * * * ret = ADS8328_SPI_ReadHalfWord();
* * * * ADS8328_SPI_CS_HIGH;
* * * **
* * * * return ret;
}
void ADS8328_Init_Config(void)
{
* * * * unsigned int AD_Reg_Rd = 0;
* * * * ADS8328_SPI_CONVST_LOW;
* * * * SysTick_Delay_ms(100);
* * * * ADS8328_SPI_CONVST_HIGH;
* * * **
* * * * ADS8328_SPI_CS_LOW;
* * * * ADS8328_SPI_Send4Bits(0x0F);
* * * * ADS8328_SPI_CS_HIGH;
* * * * SysTick_Delay_us(100);
* * * **
* * * * ADS8328_Read_CFR(&AD_Reg_Rd);
* * * **
* * * * ADS8328_Write_CFR(0x0EFF);
* * * * ADS8328_Read_CFR(&AD_Reg_Rd);
* * * * * * * * ADS8328_Write_CFR(0x02FD);
* * * * ADS8328_Read_CFR(&AD_Reg_Rd);
* * * * * * * * ADS8328_Write_CFR(0x06FF);
* * * * ADS8328_Read_CFR(&AD_Reg_Rd);
* * * * * * * * ADS8328_Write_CFR(0x02FD);
* * * * ADS8328_Read_CFR(&AD_Reg_Rd);
}
void ADS8328_Init(void)
{
* * * * ADS8328_SPI_GPIO_Config();
* * * * ADS8328_Init_Config();
}
Thanks a lot.
