CalvinBackup/Embedded-Hacking
1
0
Fork 0
mirror of https://github.com/mytechnotalent/Embedded-Hacking.git synced 2026-08-25 04:12:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

Updated Drivers

Browse Source
This commit is contained in:
Kevin Thomas
2026-03-23 09:33:04 -04:00
parent 6ee30d0520
commit 91faba6800
31 changed files with 827 additions and 337 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/0x06_adc/adc.c
+9 -4
View File
@@ -36,6 +36,7 @@
static uint8_t active_channel = 0;
/**
* @brief Convert a raw 12-bit ADC value to millivolts
*
@@ -44,10 +45,11 @@ static uint8_t active_channel = 0;
* @param raw 12-bit ADC conversion result (0 - 4095)
* @return uint32_t Equivalent voltage in millivolts (0 - 3300)
*/
static uint32_t raw_to_mv(uint16_t raw) {
static uint32_t _raw_to_mv(uint16_t raw) {
return (uint32_t)raw * ADC_VREF_MV / ADC_FULL_SCALE;
}
/**
* @brief Convert a raw temperature-sensor ADC value to degrees Celsius
*
@@ -57,11 +59,12 @@ static uint32_t raw_to_mv(uint16_t raw) {
* @param raw 12-bit ADC result from the internal temperature sensor (channel 4)
* @return float Die temperature in degrees Celsius
*/
static float raw_to_celsius(uint16_t raw) {
static float _raw_to_celsius(uint16_t raw) {
float voltage = (float)raw * 3.3f / (float)ADC_FULL_SCALE;
return 27.0f - (voltage - 0.706f) / 0.001721f;
}
void adc_driver_init(uint32_t gpio, uint8_t channel) {
active_channel = channel;
adc_init();
@@ -70,13 +73,15 @@ void adc_driver_init(uint32_t gpio, uint8_t channel) {
adc_select_input(channel);
}
uint32_t adc_driver_read_mv(void) {
return raw_to_mv(adc_read());
return _raw_to_mv(adc_read());
}
float adc_driver_read_temp_celsius(void) {
adc_select_input(4);
float result = raw_to_celsius(adc_read());
float result = _raw_to_celsius(adc_read());
adc_select_input(active_channel);
return result;
}