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-rw-r--r--include/arch/lora32u4ii/driver/adc.h18
-rw-r--r--include/arch/lora32u4ii/driver/gpio.h11
2 files changed, 28 insertions, 1 deletions
diff --git a/include/arch/lora32u4ii/driver/adc.h b/include/arch/lora32u4ii/driver/adc.h
new file mode 100644
index 0000000..5f9189a
--- /dev/null
+++ b/include/arch/lora32u4ii/driver/adc.h
@@ -0,0 +1,18 @@
+#ifndef ADC_H
+#define ADC_H
+
+class AVRADC {
+ private:
+ AVRADC(AVRADC const &copy);
+
+ public:
+ AVRADC() {}
+
+ int16_t getTemp_mdegC(int16_t offset = 205);
+ uint16_t getVCC_mV();
+ uint16_t getVBat_mV(bool controlCharger);
+};
+
+extern AVRADC adc;
+
+#endif
diff --git a/include/arch/lora32u4ii/driver/gpio.h b/include/arch/lora32u4ii/driver/gpio.h
index ba044d0..61dc867 100644
--- a/include/arch/lora32u4ii/driver/gpio.h
+++ b/include/arch/lora32u4ii/driver/gpio.h
@@ -3,6 +3,14 @@
#include <avr/io.h>
+/*
+ * lora32u4ii v1.3 pin map:
+ *
+ * PB0 -> Charger and Vbat/2 measurement voltage divider enable
+ * PB5 -> User LED
+ * PB5 <- Vbat/2
+ */
+
class GPIO {
private:
GPIO(const GPIO &copy);
@@ -40,7 +48,8 @@ class GPIO {
};
inline void setup() {
- DDRB = _BV(PB5);
+ // PB5 is both output (user LED) and input (Vbat/2 to ADC).
+ // Leave it as input by default.
}
inline volatile uint8_t * pinToPort(uint8_t pin) {
if (pin <= pb7) {