mirror of https://github.com/rusefi/wideband.git
136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
#include "port.h"
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#include "wideband_config.h"
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#define ADC_CHANNEL_COUNT 5
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#define ADC_SAMPLE ADC_SAMPLE_7P5
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static adcsample_t adcBuffer[ADC_CHANNEL_COUNT * ADC_OVERSAMPLE];
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const ADCConversionGroup convGroup =
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{
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.circular = false,
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.num_channels = ADC_CHANNEL_COUNT,
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.end_cb = nullptr,
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.error_cb = nullptr,
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.cr1 = 0,
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.cr2 =
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ADC_CR2_CONT |
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ADC_CR2_ADON, /* keep ADC enabled between convertions - for GD32 */
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.smpr1 = 0,
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.smpr2 =
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ADC_SMPR2_SMP_AN0(ADC_SAMPLE) |
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/* PA2 - ADC12_IN5 - Un_sense - no used */
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ADC_SMPR2_SMP_AN6(ADC_SAMPLE) |
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ADC_SMPR2_SMP_AN7(ADC_SAMPLE) |
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ADC_SMPR2_SMP_AN8(ADC_SAMPLE) |
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ADC_SMPR2_SMP_AN9(ADC_SAMPLE),
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.sqr1 = ADC_SQR1_NUM_CH(ADC_CHANNEL_COUNT),
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.sqr2 = 0,
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.sqr3 =
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ADC_SQR3_SQ1_N(0) | /* PA0 - ADC12_IN0 - Vm_sense */
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/* PA2 - ADC12_IN5 - Un_sense - no used */
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ADC_SQR3_SQ2_N(6) | /* PA6 - ADC12_IN6 - Ip_sense */
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ADC_SQR3_SQ3_N(7) | /* PA7 - ADC12_IN7 - Un_3x_sense */
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ADC_SQR3_SQ4_N(8) | /* PB0 - ADC12_IN8 - Vbatt_sense */
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ADC_SQR3_SQ5_N(9) /* PB1 - ADC12_IN9 - Heater_sense */
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};
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static float AverageSamples(adcsample_t* buffer, size_t idx)
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{
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uint32_t sum = 0;
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for (size_t i = 0; i < ADC_OVERSAMPLE; i++)
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{
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sum += buffer[idx];
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idx += ADC_CHANNEL_COUNT;
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}
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constexpr float scale = VCC_VOLTS / (ADC_MAX_COUNT * ADC_OVERSAMPLE);
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return (float)sum * scale;
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}
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AnalogResult AnalogSample()
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{
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adcConvert(&ADCD1, &convGroup, adcBuffer, ADC_OVERSAMPLE);
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return
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{
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.ch = {
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{
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.NernstVoltage = AverageSamples(adcBuffer, 2) * NERNST_INPUT_GAIN,
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.PumpCurrentVoltage = AverageSamples(adcBuffer, 1),
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/* We also can measure output virtual ground voltage for diagnostic purposes */
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//.VirtualGroundVoltageExt = AverageSamples(adcBuffer, 0) / VM_INPUT_DIVIDER,
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.BatteryVoltage = AverageSamples(adcBuffer, 3) / BATTERY_INPUT_DIVIDER,
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/* .HeaterVoltage = AverageSamples(adcBuffer, 4) / HEATER_INPUT_DIVIDER, */
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},
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},
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/* Rev 2 board has separate internal virtual ground = 3.3V / 2
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* VirtualGroundVoltageInt is used to calculate Ip current only as it
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* is used as offset for diffirential amp */
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.VirtualGroundVoltageInt = HALF_VCC,
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};
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}
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/* TODO: optimize */
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void SetupESRDriver(SensorType sensor)
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{
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switch (sensor) {
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case SensorType::LSU42:
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/* disable bias */
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palSetPadMode(NERNST_49_BIAS_PORT, NERNST_49_BIAS_PIN,
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PAL_MODE_INPUT);
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/* disable all others ESR drivers */
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palSetPadMode(NERNST_49_ESR_DRIVER_PORT, NERNST_49_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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palSetPadMode(NERNST_ADV_ESR_DRIVER_PORT, NERNST_ADV_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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/* enable LSU4.2 */
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palSetPadMode(NERNST_42_ESR_DRIVER_PORT, NERNST_42_ESR_DRIVER_PIN,
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PAL_MODE_OUTPUT_PUSHPULL);
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break;
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case SensorType::LSU49:
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/* disable all others ESR drivers */
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palSetPadMode(NERNST_42_ESR_DRIVER_PORT, NERNST_42_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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palSetPadMode(NERNST_ADV_ESR_DRIVER_PORT, NERNST_ADV_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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/* enable LSU4.2 */
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palSetPadMode(NERNST_49_ESR_DRIVER_PORT, NERNST_49_ESR_DRIVER_PIN,
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PAL_MODE_OUTPUT_PUSHPULL);
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/* enable bias */
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palSetPadMode(NERNST_49_BIAS_PORT, NERNST_49_BIAS_PIN,
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PAL_MODE_OUTPUT_PUSHPULL);
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palSetPad(NERNST_49_BIAS_PORT, NERNST_49_BIAS_PIN);
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break;
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case SensorType::LSUADV:
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/* disable bias */
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palSetPadMode(NERNST_49_BIAS_PORT, NERNST_49_BIAS_PIN,
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PAL_MODE_INPUT);
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/* disable all others ESR drivers */
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palSetPadMode(NERNST_49_ESR_DRIVER_PORT, NERNST_49_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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palSetPadMode(NERNST_42_ESR_DRIVER_PORT, NERNST_42_ESR_DRIVER_PIN,
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PAL_MODE_INPUT);
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/* enable LSU4.2 */
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palSetPadMode(NERNST_ADV_ESR_DRIVER_PORT, NERNST_ADV_ESR_DRIVER_PIN,
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PAL_MODE_OUTPUT_PUSHPULL);
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break;
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}
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}
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int GetESRSupplyR()
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{
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switch (GetSensorType()) {
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case SensorType::LSU42:
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return 6800;
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case SensorType::LSU49:
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return 22000;
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case SensorType::LSUADV:
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return 47000;
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}
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return 0;
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}
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