Power on RP2040

TheCacophonyProject · Sep 15, 2023 · b974351 · b974351
1 parent c48851b
commit b974351
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diff --git a/src/Pinout.h b/src/Pinout.h
@@ -12,5 +12,6 @@
 #define BUTTON          PIN_PA6   // Connected to the button on the case.
 #define PING_PIN        PIN_PB2
 #define PI_SHUTDOWN     PIN_PA7   // Raspberry Pi will drive this pin low when it has finished powering off.
+#define EN_RP2040       PIN_PA1   // Drive low to power on rp2040.
 
 #endif
diff --git a/src/main.cpp b/src/main.cpp
@@ -97,13 +97,16 @@ void setup() {
   pinMode(LED_B, OUTPUT);
   pinMode(EN_5V, OUTPUT);
   digitalWrite(EN_5V, HIGH);
+  pinMode(EN_RP2040, OUTPUT);
   pinMode(RTC_BAT_SENSE, INPUT);
   pinMode(MAIN_BAT_SENSE, INPUT);
   pinMode(RTC_ALARM, INPUT_PULLUP);
   pinMode(BUTTON, INPUT_PULLUP);
   pinMode(PI_SHUTDOWN, INPUT_PULLUP);
   statusLED.writeColor(0, 0, 0);
 
+  digitalWrite(EN_RP2040, LOW);
+
   // Check for a low battery.
   checkMainBattery();