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nanase / loop_slave.cpp
Created May 1, 2022 08:29
Communication between Raspberry Pi Pico (RP2040) and STM32F303K8 with UART
// STM32F303K8 (Slave)
#include "main.h"
#include "usart.h"
/*
RP2040 ---- STM32F303K8
UART0_TX GPIO16 ---\/--- PB6 UART1_TX
UART0_RX GPIO17 <--/\--> PB7 UART1_RX
@nanase
nanase / PA30_PA31_output.ino
Created April 29, 2020 13:35
Manipulating PA30 and PA31 pins on Seeeduino XIAO
void setup() {
// instead of pinMode(30, OUTPUT);
(&(PORT->Group[PORTA]))->PINCFG[30].reg = (uint8_t)(PORT_PINCFG_INEN);
(&(PORT->Group[PORTA]))->PINCFG[31].reg = (uint8_t)(PORT_PINCFG_INEN);
(&(PORT->Group[PORTA]))->DIRSET.reg = (1 << 30);
(&(PORT->Group[PORTA]))->DIRSET.reg = (1 << 31);
}
void loop() {
// instead of digitalWrite(30, HIGH);
@nanase
nanase / samd21_pwm_triangle.ino
Last active August 24, 2021 23:18
Triangle wave output by PWM on Seeeduino XIAO
// Code from: https://www.hackster.io/voske65/high-speed-pwm-on-arduino-atsamd21-859b06
/*
HIGH FREQ PWM SETUP FOR MKR1000 - SAMW25 = SAMD21 with some other pinning
MKR1000's pins than can be defined as TCC timer pins and their associated channel (WO[X])
unless stated otherwise the TCC timers are on peripheral F:
A0 - PA02 - None
@nanase
nanase / sine_wave.ino
Created April 27, 2020 14:12
Sine wave output on Seeeduino XIAO
#define MAX_VALUE ((1 << 10) - 1)
#define SIN_MAX (MAX_VALUE / 2.0)
void setup() {
DAC->CTRLA.bit.ENABLE = 0x01;
syncDAC();
}
double i = 0.0;
@nanase
nanase / SerialMeasure.ino
Created April 24, 2020 03:59
Arduinoでシリアル通信の転送速度を測定します。PCへの送信のみです。
// このスケッチは以下の投稿にあるものを改良したもの
// https://forum.arduino.cc/index.php?topic=575333.0
char text[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQR"
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQR"
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQR"
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQR";
void setup() {
Serial.begin(250000);
#include <SPI.h>
#define PIN_SCK 13
#define PIN_SDI 11
#define PIN_LATCH 10
#define SCROLL_SPEED 250
const byte digits[] PROGMEM = {
0b11111100, // 0
0b01100000, // 1
#include <SPI.h>
#define PIN_SCK 13
#define PIN_SDI 11
#define PIN_LATCH 10
#define SCROLL_SPEED 10
const byte digits[] PROGMEM = {
0b10000000, // 1
0b01000000, // 2
#include <SPI.h>
#define PIN_SCK 13
#define PIN_SDI 11
#define PIN_LATCH 10
#define SCROLL_SPEED 50
const byte digits[] PROGMEM = {
0b11111100, // 0
0b01100000, // 1
@nanase
nanase / aqm1602.cpp
Created January 15, 2020 23:40
AQM1602Y on Arduino MKR ZERO (experiments)
#include "aqm1602.h"
AQM1602::AQM1602(uint8_t i2cAddress, uint8_t voltage, uint8_t contrast) {
this->i2cAddress = i2cAddress;
this->contrast = contrast;
this->voltage = voltage;
this->displayControl = 0x00;
// ACM series = 0x80
// AQM series = 0x40
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