LCD and memecoder
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1c4ed62d84
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39121dd5b9
4 changed files with 224 additions and 11 deletions
145
User/lcd.c
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145
User/lcd.c
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#include "lcd.h"
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#include "ch32v20x.h"
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void lcd_begin(lcd_t *lcd);
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void lcd_expander_write(lcd_t *lcd, uint8_t data);
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void lcd_write4bits(lcd_t *lcd, uint8_t value);
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void lcd_command(lcd_t *lcd, uint8_t cmd);
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void lcd_init(lcd_t *lcd, u8 address) {
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lcd->address = address;
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lcd->backlight = 0;
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// Enable I2C1 and GPIOB
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
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GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
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// Set up GPIO on port B
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_StructInit(&GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
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// SCL - PB8
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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// SDA - PB9
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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I2C_DeInit(I2C1);
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I2C_InitTypeDef I2C_InitStructure;
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I2C_StructInit(&I2C_InitStructure);
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I2C_InitStructure.I2C_ClockSpeed = 100000;
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I2C_Init(I2C1, &I2C_InitStructure);
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I2C_Cmd(I2C1, ENABLE);
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lcd_begin(lcd);
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}
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void lcd_begin(lcd_t *lcd) {
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lcd->backlight = LCD_BACKLIGHT;
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Delay_Ms(50);
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lcd_expander_write(lcd, 0);
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Delay_Ms(1000);
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lcd_write4bits(lcd, 0x03 << 4);
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Delay_Us(4500);
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lcd_write4bits(lcd, 0x03 << 4);
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Delay_Us(4500);
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lcd_write4bits(lcd, 0x03 << 4);
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Delay_Us(150);
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lcd_write4bits(lcd, 0x02 << 4);
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lcd->function = LCD_4BITMODE | LCD_2LINE;
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lcd_command(lcd, LCD_FUNCTIONSET | lcd->function);
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lcd->dispctrl = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
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lcd_command(lcd, LCD_DISPLAYCONTROL | lcd->dispctrl);
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lcd->entrymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDEC;
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lcd_command(lcd, LCD_ENTRYMODESET | lcd->entrymode);
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lcd_clear(lcd);
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lcd_home(lcd);
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}
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void lcd_backlight(lcd_t *lcd) {
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lcd->backlight = LCD_BACKLIGHT;
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lcd_expander_write(lcd, 0);
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}
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void lcd_no_backlight(lcd_t *lcd) {
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lcd->backlight = LCD_NOBACKLIGHT;
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lcd_expander_write(lcd, 0);
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}
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void lcd_clear(lcd_t *lcd) {
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lcd_command(lcd, LCD_CLEARDISPLAY);
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Delay_Us(2000);
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}
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void lcd_home(lcd_t *lcd) {
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lcd_command(lcd, LCD_RETURNHOME);
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Delay_Us(2000);
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}
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void lcd_cursor(lcd_t *lcd, uint8_t col, uint8_t row) {
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uint8_t row_offsets[] = {0x00, 0x40, 0x14, 0x54};
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lcd_command(lcd, LCD_SETDDRAMADDR | (col + row_offsets[row]));
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}
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void lcd_expander_write(lcd_t *lcd, uint8_t data) {
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while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY) != RESET);
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I2C_GenerateSTART(I2C1, ENABLE);
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// Delay_Ms(1);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
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// I2C_Send7bitAddress(I2C1, 0x4E, I2C_Direction_Receiver);
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I2C_SendData(I2C1, lcd->address << 1);
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// Delay_Ms(1);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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// I2C_SendData(I2C1, 0x27);
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// while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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I2C_SendData(I2C1, data | lcd->backlight);
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// Delay_Ms(1);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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I2C_GenerateSTOP(I2C1, ENABLE);
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// Delay_Ms(1);
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}
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void lcd_write4bits(lcd_t *lcd, uint8_t value) {
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lcd_expander_write(lcd, value);
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lcd_expander_write(lcd, value | LCD_EN);
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Delay_Us(1);
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lcd_expander_write(lcd, value & ~LCD_EN);
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Delay_Us(50);
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}
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void lcd_command(lcd_t *lcd, uint8_t cmd) {
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lcd_write4bits(lcd, cmd & 0xF0);
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lcd_write4bits(lcd, cmd << 4);
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}
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void lcd_write(lcd_t *lcd, char c) {
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lcd_write4bits(lcd, (c & 0xF0) | LCD_RS);
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lcd_write4bits(lcd, (c << 4) | LCD_RS);
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}
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void lcd_puts(lcd_t *lcd, char *str) {
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while(*str)
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lcd_write(lcd, *str++);
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}
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54
User/lcd.h
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54
User/lcd.h
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@ -0,0 +1,54 @@
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#ifndef USER_LCD_H_
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#define USER_LCD_H_
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#include "ch32v20x.h"
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static const uint8_t LCD_RS = 0x01;
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static const uint8_t LCD_RW = 0x02;
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static const uint8_t LCD_EN = 0x04;
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static const uint8_t LCD_BACKLIGHT = 0x08;
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static const uint8_t LCD_NOBACKLIGHT = 0x00;
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static const uint8_t LCD_4BITMODE = 0x00;
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static const uint8_t LCD_2LINE = 0x08;
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static const uint8_t LCD_CLEARDISPLAY = 0x01;
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static const uint8_t LCD_RETURNHOME = 0x02;
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static const uint8_t LCD_ENTRYMODESET = 0x04;
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static const uint8_t LCD_DISPLAYCONTROL = 0x08;
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static const uint8_t LCD_CURSORSHIFT = 0x10;
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static const uint8_t LCD_FUNCTIONSET = 0x20;
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static const uint8_t LCD_SETCGRAMADDR = 0x40;
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static const uint8_t LCD_SETDDRAMADDR = 0x80;
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static const uint8_t LCD_BLINKOFF = 0x00;
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static const uint8_t LCD_BLINKON = 0x01;
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static const uint8_t LCD_CURSOROFF = 0x00;
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static const uint8_t LCD_CURSORON = 0x02;
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static const uint8_t LCD_DISPLAYON = 0x04;
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static const uint8_t LCD_DISPLAYOFF = 0x00;
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static const uint8_t LCD_ENTRYSHIFTDEC = 0x00;
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static const uint8_t LCD_ENTRYSHIFTINC = 0x01;
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static const uint8_t LCD_ENTRYRIGHT = 0x00;
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static const uint8_t LCD_ENTRYLEFT = 0x02;
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typedef struct {
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uint8_t address;
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uint8_t backlight;
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uint8_t function;
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uint8_t dispctrl;
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uint8_t entrymode;
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} lcd_t;
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void lcd_init(lcd_t *lcd, uint8_t address);
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void lcd_backlight(lcd_t *lcd);
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void lcd_no_backlight(lcd_t *lcd);
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void lcd_clear(lcd_t *lcd);
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void lcd_home(lcd_t *lcd);
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void lcd_write(lcd_t *lcd, char c);
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void lcd_puts(lcd_t *lcd, char *str);
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void lcd_cursor(lcd_t *lcd, uint8_t row, uint8_t col);
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#endif /* USER_LCD_H_ */
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26
User/main.c
26
User/main.c
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@ -4,6 +4,7 @@
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#include "memecoder.h"
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#include "ctre.h"
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#include "mode.h"
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#include "lcd.h"
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#include <string.h>
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@ -18,17 +19,17 @@ void init_switch_gpio() {
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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// GPIO_Init(GPIOB, &GPIO_InitStructure);
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}
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u8 get_switch_state() {
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u8 state = 0;
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state |= (!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_5)) << 0;
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state |= (!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_6)) << 1;
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// state |= (!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_5)) << 0;
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// state |= (!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_6)) << 1;
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return state;
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}
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@ -45,6 +46,12 @@ int main(void)
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memecoder_init();
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can_init();
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ctre_init();
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lcd_t lcd;
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lcd_init(&lcd, 0x27);
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lcd_backlight(&lcd);
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lcd_puts(&lcd, "LIGMA");
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lcd_cursor(&lcd, 2, 1);
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lcd_puts(&lcd, "NUTS");
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// ws2812_init();
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// Clear all existing ports
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@ -77,7 +84,14 @@ int main(void)
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mode_position2_init(&app, &position2_state);
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while(1)
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{
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memecoder_update();
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printf("on\r\n");
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char tmp[20] = {0};
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sprintf(tmp, "cnt: %5d", memecoder_get());
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lcd_cursor(&lcd, 2, 2);
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lcd_puts(&lcd, tmp);
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}
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while(1) {
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app.switch_state = get_switch_state();
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for(int i = 0; i < dev_cnt; i++) {
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@ -7,19 +7,19 @@ int memecoder_count = 0;
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void memecoder_init() {
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// Enable GPIOB
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// Enable GPIOA
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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// Set up GPIO on port B
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// Set up GPIO on port A
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
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// PHASE_A - PB12
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// PHASE_A - PA0
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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// PHASE_A - PB13
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// PHASE_B - PA1
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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@ -71,7 +71,7 @@ void memecoder_set(int value) {
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}
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int memecoder_get() {
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return TIM_GetCounter(TIM2);
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return (int16_t)TIM_GetCounter(TIM2) / 4;
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}
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void memecoder_zero() {
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