mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-28 16:32:05 -07:00
89 lines
2.3 KiB
C
Executable File
89 lines
2.3 KiB
C
Executable File
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "pcf8574_lcd.h"
|
|
|
|
|
|
ErrorStatus LCD_SendInternal(uint8_t lcd_addr, uint8_t data, uint8_t flags)
|
|
{
|
|
ErrorStatus status;
|
|
for(;;)
|
|
{
|
|
status = BSP_I2C_IsDeviceReady(lcd_addr, 5000);
|
|
if(status == SUCCESS)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
uint8_t up = data & 0xF0;
|
|
uint8_t lo = (data << 4) & 0xF0;
|
|
|
|
uint8_t data_arr[4];
|
|
data_arr[0] = up|flags|BACKLIGHT|PIN_EN;
|
|
data_arr[1] = up|flags|BACKLIGHT;
|
|
data_arr[2] = lo|flags|BACKLIGHT|PIN_EN;
|
|
data_arr[3] = lo|flags|BACKLIGHT;
|
|
|
|
status = BSP_I2C_MasterTransmit(lcd_addr, data_arr, sizeof(data_arr), 5000);
|
|
LL_mDelay(LCD1602_DELAY);
|
|
return status;
|
|
}
|
|
|
|
void LCD_SendCommand(uint8_t lcd_addr, uint8_t cmd)
|
|
{
|
|
LCD_SendInternal(lcd_addr, cmd, 0);
|
|
}
|
|
|
|
void LCD_SendData(uint8_t lcd_addr, uint8_t data)
|
|
{
|
|
LCD_SendInternal(lcd_addr, data, PIN_RS);
|
|
}
|
|
|
|
void LCD_SetCGRAM(uint8_t lcd_addr, uint8_t char_addr, const uint8_t *char_font)
|
|
{
|
|
uint8_t i = 8;
|
|
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_CGRAM_ADDR | (char_addr << 3));
|
|
|
|
while(i--)
|
|
{
|
|
LCD_SendData(lcd_addr, *char_font++ );
|
|
}
|
|
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_CGRAM_ADDR);
|
|
}
|
|
|
|
void LCD_Init(uint8_t lcd_addr)
|
|
{
|
|
// 4-bit mode, 2 lines, 5x8 format
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_4B_2L_5X8);
|
|
// display & cursor home
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_HOME);
|
|
// display on, right shift, underline off, blink off
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_MODE_ON_CURSOR_BLNK);
|
|
// move direction right
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_DIRECTION_RIGHT);
|
|
// clear display (optional here)
|
|
LCD_SendCommand(lcd_addr, LCD1602_CMD_CLEAR_DISPLAY);
|
|
}
|
|
|
|
void LCD_SendString(uint8_t lcd_addr, char *str)
|
|
{
|
|
while (*str)
|
|
{
|
|
LCD_SendData(lcd_addr, (uint8_t)(*str));
|
|
str++;
|
|
}
|
|
} |