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我目前正在将 ADS1298与 STM32F407微控制器相连。 我曾尝试将 ADS1298置于待机模式、以验证 SPI 的功能。 它读取的器件 ID 为0x7F (0111 1111)。 但是、我可以正确写入和读取其他寄存器。 我已经尝试根据数据表85页指定的上电顺序进行调试。 测得的 VCAP1电压 I 为1.194V。 那么、问题的原因可能是什么? 以下代码是我正在使用的 ADS1298初始化函数。
void ADS_Init(){ if(verbose){ HAL_Delay(6000); USB_Print("\n************************\n"); USB_Print("Start ADS1298\n"); } ADS_RESET(); HAL_Delay(500); ADS_SDATAC(); HAL_Delay(500); ADS_getDeviceID(); HAL_Delay(1000); //Work Settings ADS_WREG(CONFIG1,0x06); HAL_Delay(100); ADS_WREG(CONFIG2,0x10); HAL_Delay(100); ADS_WREG(CONFIG3,0xDC); HAL_Delay(100); ADS_WREG(LOFF,0x00); HAL_Delay(10); ADS_WREG(CH1SET,0x60); HAL_Delay(10); ADS_WREG(CH2SET,0x60); HAL_Delay(10); ADS_WREG(CH3SET,0x60); HAL_Delay(10); ADS_WREG(CH4SET,0x60); HAL_Delay(10); ADS_WREG(CH5SET,0x60); HAL_Delay(10); ADS_WREG(CH6SET,0x60); HAL_Delay(10); ADS_WREG(CH7SET,0x60); HAL_Delay(10); ADS_WREG(CH8SET,0x60); HAL_Delay(10); ADS_WREG(BIAS_SENSN,0x00); HAL_Delay(10); ADS_WREG(BIAS_SENSP,0x00); HAL_Delay(10); ADS_WREG(LOFF_SENSN,0x00); HAL_Delay(10); ADS_WREG(LOFF_SENSP,0x00); HAL_Delay(10); ADS_WREG(LOFF_FLIP,0x00); HAL_Delay(10); ADS_WREG(LOFF_STATP,0x00); HAL_Delay(10); ADS_WREG(LOFF_STATN,0x00); HAL_Delay(10); ADS_WREG(GPIO,0x0F); HAL_Delay(10); ADS_WREG(PACE,0x00); HAL_Delay(10); ADS_WREG(RESP,0x00); HAL_Delay(10); ADS_WREG(CONFIG4,0x00); HAL_Delay(10); ADS_WREG(0x18,0x00); HAL_Delay(10); ADS_WREG(0x19,0x00); HAL_Delay(10); ADS_RREGS(0,17); HAL_Delay(1000); //ADS_START(); //HAL_Delay(100); if(verbose){ USB_Print("\nADS1298 configure DONE!\n"); USB_Print("\n**********************\n"); HAL_Delay(3000); } } void ADS_SDATAC(){ HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin,GPIO_PIN_RESET); transferSPI(_SDATAC); HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin,GPIO_PIN_SET); } void ADS_RESET(){ HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin,GPIO_PIN_RESET); transferSPI(_RESET); HAL_GPIO_WritePin(SPI_CS_GPIO_Port, SPI_CS_Pin,GPIO_PIN_SET); } uint8_t ADS_getDeviceID(){ uint8_t data = ADS_RREG(ID); if(verbose){ USB_Print("\nDevice ID: "); USB_SendBits(data); } return data; }
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