/* * Simple DAC test. * * Author: Marti Bolivar <mbolivar@leaflabs.com> * * This file is released into the public domain. */ #include <wirish/wirish.h> #include <libmaple/dac.h> uint16 count = 0; void setup() { pinMode(BOARD_LED_PIN, OUTPUT); digitalWrite(BOARD_LED_PIN, HIGH); Serial1.begin(9600); Serial1.println("**** Beginning DAC test"); Serial1.print("Init... "); dac_init(DAC, DAC_CH1 | DAC_CH2); Serial1.println("Done."); } void loop() { toggleLED(); delay(100); count += 100; if (count > 4095) { count = 0; } dac_write_channel(DAC, 1, 4095 - count); dac_write_channel(DAC, 2, count); } __attribute__((constructor)) void premain() { init(); } int main(void) { setup(); while (true) { loop(); } return 0; }