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DeqingSunDeqingSun
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add i2c and ws2812
1 parent c77605a commit 0502c69

31 files changed

Lines changed: 1850 additions & 2 deletions

‎ch55xduino/ch55x/libraries/SoftI2C/examples/dump24c32/dump24c32.ino‎

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#include <SoftI2C.h>
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void setup() {
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scl_pin = 30; //extern variable in SoftI2C.h
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sda_pin = 31;
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I2CInit();
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}
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void loop() {
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uint8_t ack_bit, readData1, readData2;
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USBSerial_println_s("\nDump first 8 bytes of 24C32 on 0x50 addr:");
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USBSerial_flush();
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I2CStart();
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ack_bit = I2CSend(0x50 << 1 | 1); //last bit is r(1)/w(0).
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I2CStop();
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if (ack_bit == 0) {
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for (uint8_t i = 0; i < 8; i += 2) {
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I2CStart();
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ack_bit = I2CSend(0x50 << 1 | 0); //last bit is r(1)/w(0).
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if (ack_bit != 0) break;
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ack_bit = I2CSend(0); //high EEPROM addr
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if (ack_bit != 0) break;
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ack_bit = I2CSend(i); //low EEPROM addr
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if (ack_bit != 0) break;
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I2CRestart();
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ack_bit = I2CSend(0x50 << 1 | 1); //last bit is r(1)/w(0).
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if (ack_bit != 0) break;
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readData1 = I2CRead();
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I2CAck();
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readData2 = I2CRead();
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I2CNak();
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I2CStop();
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USBSerial_print_s("Get 2 bytes start from addr ");
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USBSerial_flush();
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USBSerial_print_ub(i, HEX);
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USBSerial_print_s(": ");
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USBSerial_print_ub(readData1, HEX);
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USBSerial_print_s(", ");
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USBSerial_println_ub(readData2, HEX);
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USBSerial_flush();
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}
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} else {
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USBSerial_println_s("No response from 0x50");
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USBSerial_flush();
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}
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delay(1000);
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}

‎ch55xduino/ch55x/libraries/SoftI2C/examples/i2cScanner/i2cScanner.ino‎

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#include <SoftI2C.h>
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void setup() {
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scl_pin = 30; //extern variable in SoftI2C.h
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sda_pin = 31;
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I2CInit();
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}
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void loop() {
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uint8_t ack_bit;
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USBSerial_println_s("\nScanning:");
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for (uint8_t i = 0; i < 128; i++) {
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I2CStart();
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ack_bit = I2CSend(i << 1 | 1); //last bit is r(1)/w(0).
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I2CStop();
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delay(1);
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if (ack_bit == 0) {
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USBSerial_print_s("I2C got ACK from: 0x");
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USBSerial_println_ub(i, HEX);
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}
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}
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delay(1000);
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}

‎ch55xduino/ch55x/libraries/SoftI2C/keywords.txt‎

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#######################################
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# Syntax Coloring Map For SoftI2C
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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#######################################
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# Instances (KEYWORD2)
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#######################################
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#######################################
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# Constants (LITERAL1)
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#######################################
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‎ch55xduino/ch55x/libraries/SoftI2C/library.properties‎

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name=SoftI2C
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version=1.0
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author=Deqing Sun
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maintainer=Deqing Sun <[email protected]>
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sentence=Enables the communication with devices that use the Inter-Integrated Circuit (I2C) Bus.
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paragraph=The Inter-Integrated Circuit (I2C) Protocol is a protocol intended to allow multiple "peripheral" digital integrated circuits ("chips") to communicate with one or more "controller" chips. It only requires two signal wires to exchange information.
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category=Communication
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url=https://github.com/DeqingSun/ch55xduino
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architectures=mcs51
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‎ch55xduino/ch55x/libraries/SoftI2C/src/SoftI2C.c‎

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/*
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* Copyright (c) 2020 by Deqing Sun <[email protected]> (c version for CH552 port)
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* Soft I2C library for arduino.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#include "SoftI2C.h"
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__xdata uint8_t scl_pin = 30;
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__xdata uint8_t sda_pin = 31;
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void I2CInit(){
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pinMode(scl_pin, OUTPUT_OD);
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pinMode(sda_pin, OUTPUT_OD);
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digitalWrite(sda_pin, HIGH);
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digitalWrite(scl_pin, HIGH);
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}
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void I2CStart(){
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digitalWrite(sda_pin, LOW);
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digitalWrite(scl_pin, LOW);
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}
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void I2CRestart(){
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digitalWrite(sda_pin, HIGH);
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digitalWrite(scl_pin, HIGH);
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digitalWrite(sda_pin, LOW);
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digitalWrite(scl_pin, LOW);
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}
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void I2CStop(){
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digitalWrite(scl_pin, LOW);
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digitalWrite(sda_pin, LOW);
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digitalWrite(scl_pin, HIGH);
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digitalWrite(sda_pin, HIGH);
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}
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void I2CAck(){
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digitalWrite(sda_pin, LOW);
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digitalWrite(scl_pin, HIGH);
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digitalWrite(scl_pin, LOW);
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digitalWrite(sda_pin, HIGH);
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}
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void I2CNak(){
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digitalWrite(sda_pin, HIGH);
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digitalWrite(scl_pin, HIGH);
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digitalWrite(scl_pin, LOW);
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digitalWrite(sda_pin, HIGH);
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}
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uint8_t I2CSend(uint8_t i2cData){
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uint8_t i, ack_bit;
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for (i = 0; i < 8; i++) {
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if ((i2cData & 0x80) == 0)
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digitalWrite(sda_pin, LOW);
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else
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digitalWrite(sda_pin, HIGH);
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digitalWrite(scl_pin, HIGH);
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delayMicroseconds(3);
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digitalWrite(scl_pin, LOW);
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i2cData <<= 1;
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}
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digitalWrite(sda_pin, HIGH);
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digitalWrite(scl_pin, HIGH);
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ack_bit = digitalRead(sda_pin);
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digitalWrite(scl_pin, LOW);
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return ack_bit;
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}
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uint8_t I2CRead(){
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uint8_t i, Data=0;
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for (i = 0; i < 8; i++) {
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digitalWrite(scl_pin, HIGH);
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if(digitalRead(sda_pin))
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Data |=1;
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if(i<7)
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Data<<=1;
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digitalWrite(scl_pin, LOW);
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}
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return Data;
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}

‎ch55xduino/ch55x/libraries/SoftI2C/src/SoftI2C.h‎

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/*
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* Copyright (c) 2020 by Deqing Sun <[email protected]> (c version for CH552 port)
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* Soft I2C library for arduino.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#ifndef _SOFTI2C_H_INCLUDED
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#define _SOFTI2C_H_INCLUDED
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#include <Arduino.h>
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extern __xdata uint8_t scl_pin;
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extern __xdata uint8_t sda_pin;
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void I2CInit();
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void I2CStart();
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void I2CRestart();
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void I2CStop();
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void I2CAck();
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void I2CNak();
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uint8_t I2CSend(uint8_t i2cData);
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uint8_t I2CRead();
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#endif

‎ch55xduino/ch55x/libraries/WS2812/examples/chaseTest/chaseTest.ino‎

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#include <WS2812.h>
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#define NUM_LEDS 8
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#define COLOR_PER_LEDS 3
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#define NUM_BYTES (NUM_LEDS*COLOR_PER_LEDS)
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#if NUM_BYTES > 255
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#error "NUM_BYTES can not be larger than 255."
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#endif
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__xdata uint8_t ledData[NUM_BYTES];
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void setup() {
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pinMode(15, OUTPUT); //Possible to use other pins.
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}
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void loop() {
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for (uint8_t i = 0; i < NUM_LEDS; i++) {
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set_pixel_for_GRB_LED(ledData, i, 1, 0, 0); //Choose the color order depending on the LED you use.
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neopixel_show_P1_5(ledData, NUM_BYTES); //Possible to use other pins.
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delay(100);
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}
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for (uint8_t i = 0; i < NUM_LEDS; i++) {
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set_pixel_for_GRB_LED(ledData, i, 0, 1, 0);
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neopixel_show_P1_5(ledData, NUM_BYTES);
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delay(100);
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}
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for (uint8_t i = 0; i < NUM_LEDS; i++) {
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set_pixel_for_GRB_LED(ledData, i, 0, 0, 1);
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neopixel_show_P1_5(ledData, NUM_BYTES);
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delay(100);
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}
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}

‎ch55xduino/ch55x/libraries/WS2812/keywords.txt‎

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#######################################
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# Syntax Coloring Map For WS2812
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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#######################################
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# Instances (KEYWORD2)
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#######################################
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#######################################
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# Constants (LITERAL1)
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#######################################
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‎ch55xduino/ch55x/libraries/WS2812/library.properties‎

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name=WS2812
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version=1.0
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author=Deqing Sun
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maintainer=Deqing Sun <[email protected]>
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sentence=Use WS2812 (NeoPixel or other compatibles) on CH552.
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paragraph=Use WS2812 (NeoPixel or other compatibles) on CH552. This version supports 24M clock for 800Khz signal.
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category=Display
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url=https://github.com/DeqingSun/ch55xduino
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architectures=mcs51
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‎ch55xduino/ch55x/libraries/WS2812/src/WS2812.c‎

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/*
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* Copyright (c) 2020 by Deqing Sun <[email protected]> (c version for CH552 port)
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* WS2812 library for arduino CH552.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#include "WS2812.h"
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