The project USES STM32F103 and ADS1256 to build a data acquisition system. Then the collect data can be display on the ANO_TC匿名上位机V65. The usr guider of the software can be found in: https://blog.csdn.net/wangjt1988/article/details/83684188
1）MCU: STM32F103C8T6 2) IDE: IAR 7.8.4 3) STM32 CubeMx: 4.27 4) BaudRate:512000
You can modify the sampling rate and channel number to suit your needs in ads1256.c.
ads125x_conf_t ads125x_conf={ .gain = PGA_1, .sampling_rate = DATARATE_30K, .input_mode = ADC1256_INPUT_MODE, .report_interval_ms = 5, //uint:ms
/*single-ended input channel:1=enable, 0=disable*/
.single_input_channel.ADS1256_SINGLE_CH0 = 1,
.single_input_channel.ADS1256_SINGLE_CH1 = 1,
.single_input_channel.ADS1256_SINGLE_CH2 = 1,
.single_input_channel.ADS1256_SINGLE_CH3 = 1,
.single_input_channel.ADS1256_SINGLE_CH4 = 0,
.single_input_channel.ADS1256_SINGLE_CH5 = 0,
.single_input_channel.ADS1256_SINGLE_CH6 = 0,
.single_input_channel.ADS1256_SINGLE_CH7 = 0,
/*differential input channel:1=enable, 0=disable*/
.diff_input_channel.ADS1256_DIFF_CH0 = 1, /*AINp=AIN0, AINn=AIN1*/
.diff_input_channel.ADS1256_DIFF_CH1 = 0, /*AINp=AIN2, AINn=AIN3*/
.diff_input_channel.ADS1256_DIFF_CH2 = 0, /*AINp=AIN4, AINn=AIN5*/
.diff_input_channel.ADS1256_DIFF_CH3 = 0, /*AINp=AIN6, AINn=AIN7*/
}; What is more, you can configure aboe parameters through the serial port as you want and save them in flash of the mcu. The communication protocol is defined in main.c
/**
- @brief Parse the packets from the serial port to confirm
- @param htim : TIM handle
- @retval None
- reference to data struct "ads125x_conf_t"
- write configuration to flash
- | 1byte | 1byte | 1byte | 1byte | 1byte | 1byte | 2byte | 1byte | 1byte | 1byte |
- | 0xFE | 0x5A | LEN=0x7 | GAIN | DATA RATE | IN MODE | INTERVAL | Single AIN | Diff AIN | 0x5C |
- read configuration from flash
- | 1byte | 1byte | 1byte | 1byte |
- | 0xFE | 0xA5 | LEN=0x0 | 0x5C |
- single channel AIN0 */
static void uart_packet_parse( uart_data_stuc_t *msg )
{
if( msg->rxbuf[0] == 0xFE && msg->rxbuf[3+msg->rxbuf[2]] == 0x5c){
if( msg->rxbuf[1] == 0x5A && msg->rxbuf[2] == sizeof(ads125x_conf_t)){
falsh_write_conf(&msg->rxbuf[3],msg->rxbuf[2]);
}
else if(msg->rxbuf[1] == 0xA5 && msg->rxbuf[2] == 0 ){
}
}
}