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Stable enough ADC

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This commit is contained in:
Ben V. Brown
2022-04-19 22:23:48 +10:00
parent f397e49533
commit 25283e434f
10 changed files with 404 additions and 382 deletions
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19
source/Core/BSP/Magic/BSP.cpp
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@@ -23,19 +23,15 @@ void resetWatchdog() {
uint16_t getHandleTemperature(uint8_t sample) {
// We return the current handle temperature in X10 C
// TMP36 in handle, 0.5V offset and then 10mV per deg C (0.75V @ 25C for
// example) STM32 = 4096 count @ 3.3V input -> But We oversample by 32/(2^2) =
// 8 times oversampling Therefore 32768 is the 3.3V input, so 0.1007080078125
// mV per count So we need to subtract an offset of 0.5V to center on 0C
// (4964.8 counts)
//
int32_t result = getADCHandleTemp(sample);
result -= 4965; // remove 0.5V offset
result -= 10240; // remove 0.5V offset
// 10mV per C
// 99.29 counts per Deg C above 0C
result *= 100;
result /= 993;
// 204.7 counts per Deg C above 0C
result *= 10;
result /= 205;
if (result < 0) {
result = 0;
}
return result;
}
@@ -47,7 +43,6 @@ uint16_t getInputVoltageX10(uint16_t divisor, uint8_t sample) {
}
void unstick_I2C() {
MSG((char *)"I2C Unstick\r\n");
/* configure SDA/SCL for GPIO */
// GPIO_BC(GPIOB) |= SDA_Pin | SCL_Pin;
// gpio_init(SDA_GPIO_Port, GPIO_MODE_OUT_OD, GPIO_OSPEED_50MHZ, SDA_Pin | SCL_Pin);