trotFunky/Projet_Barbapapa_Firmware
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Main structure and setup

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pinMode most of what could be useful in the main and put modules
LOW to minimize power draw before the regulator is ON.

Add the skeleton for the setup, main loop and battery level checking.
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Teo-CD 2023-09-09 19:45:45 +01:00
parent 09ebef0615
commit 07654829ed
1 changed files with 41 additions and 1 deletions
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40
src/main.cpp
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@ -4,6 +4,46 @@
#include <MFRC522v2.h>
#include "Pinout.h"
__attribute__((noreturn)) int main() {
pinMode(pin_DBG_LED_1, OUTPUT);
pinMode(pin_DBG_LED_2, OUTPUT);
pinMode(pin_Reg_en, OUTPUT);
pinMode(pin_Audio_Amp_enable, OUTPUT);
pinMode(pin_Audio_AMP_GAIN_EN, OUTPUT);
pinMode(pin_NFC1_RST, OUTPUT);
pinMode(pin_LCD_RST, OUTPUT);
/* Preemptively disable what we can before the regulator is ON. */
digitalWrite(pin_Audio_Amp_enable, LOW);
digitalWrite(pin_NFC1_RST, LOW);
digitalWrite(pin_LCD_RST, LOW);
pinMode(pin_BAT_SNS, INPUT);
/*
* Voltage divider ratio is 1.5 and analog input has 10 significant bits.
* Which gives us 0-1023 <=> 0V-4.95V, so 650 is a measure of 3.14V.
* This is quite low, but there's a voltage drop because of the diode, and
* we don't want to be at the very end of the battery's charge anyway.
* Let's be conservative.
*/
if (analogRead(pin_BAT_SNS) < 650) { /* TODO: Low battery handling */ }
digitalWrite(pin_Reg_en, HIGH);
/*
* System is powered up after this point.
*/
Serial.begin(115200);
Serial.println("# System is powered up, running set-up.");
/* TODO: Setups once module structure is up. */
/* Main loop */
while (true) {
}
}