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Make adc range scalable

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This commit is contained in:
Ben V. Brown
2022-05-24 23:31:45 +10:00
parent 7c6534a339
commit 9fd1d366b9
6 changed files with 21 additions and 19 deletions
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16
source/Core/BSP/Magic/Setup.cpp
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@@ -29,13 +29,17 @@ void hardware_init() {
gpio_set_mode(TMP36_INPUT_Pin, GPIO_INPUT_MODE);
gpio_set_mode(TIP_TEMP_Pin, GPIO_INPUT_MODE);
gpio_set_mode(VIN_Pin, GPIO_INPUT_MODE);
gpio_set_mode(TIP_RESISTANCE_SENSE, GPIO_OUTPUT_PP_MODE);
gpio_set_mode(TIP_RESISTANCE_SENSE, GPIO_OUTPUT_MODE);
gpio_write(TIP_RESISTANCE_SENSE, 0);
MSG((char *)"Magic Starting\r\n");
setup_timer_scheduler();
setup_adc();
setup_pwm();
I2C_ClockSet(I2C0_ID, 400000); // Sets clock to around 375kHz
TIMER_SetCompValue(TIMER_CH0, TIMER_COMP_ID_1, 0);
PWM_Channel_Enable(PWM_Channel);
}
void setup_pwm(void) {
// Setup PWM we use for driving the tip
@@ -56,8 +60,8 @@ void setup_pwm(void) {
}
const ADC_Chan_Type adc_tip_pos_chans[]
= {TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TMP36_ADC_CHANNEL, VIN_ADC_CHANNEL, TMP36_ADC_CHANNEL, VIN_ADC_CHANNEL};
const ADC_Chan_Type adc_tip_neg_chans[] = {ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND};
= {VIN_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TIP_TEMP_ADC_CHANNEL, TMP36_ADC_CHANNEL, VIN_ADC_CHANNEL, TMP36_ADC_CHANNEL, VIN_ADC_CHANNEL};
const ADC_Chan_Type adc_tip_neg_chans[] = {ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND};
static_assert(sizeof(adc_tip_pos_chans) == sizeof(adc_tip_neg_chans));
void setup_adc(void) {
@@ -71,9 +75,9 @@ void setup_adc(void) {
adc_cfg.clkDiv = ADC_CLK_DIV_4;
adc_cfg.vref = ADC_VREF_3P2V;
adc_cfg.resWidth = ADC_DATA_WIDTH_12;
adc_cfg.resWidth = ADC_DATA_WIDTH_16_WITH_128_AVERAGE;
adc_cfg.inputMode = ADC_INPUT_SINGLE_END;
adc_cfg.v18Sel = ADC_V18_SEL_1P82V;
adc_cfg.v18Sel = ADC_V18_SEL_1P72V;
adc_cfg.v11Sel = ADC_V11_SEL_1P1V;
adc_cfg.gain1 = ADC_PGA_GAIN_NONE;
adc_cfg.gain2 = ADC_PGA_GAIN_NONE;
@@ -89,7 +93,7 @@ void setup_adc(void) {
ADC_Init(&adc_cfg);
adc_fifo_cfg.dmaEn = DISABLE;
adc_fifo_cfg.fifoThreshold = ADC_FIFO_THRESHOLD_8;
adc_fifo_cfg.fifoThreshold = ADC_FIFO_THRESHOLD_4;
ADC_FIFO_Cfg(&adc_fifo_cfg);
ADC_MIC_Bias_Disable();
ADC_Tsen_Disable();