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stavinsky/README.MD

Created June 15, 2017 09:44
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s6d1121 stm32 hal opensmart
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README.MD

This is a test for my lcd display.

PINS DB7:0 connected to A7:0

Other pins connected as described in lcd.h

Raw
lcd.c
#include "lcd.h"
uint8_t fch, fcl, bch, bcl;
uint8_t orient;
//int disp_x_size, disp_y_size;
bool _transparent;
uint16_t disp_x_size = 239;
uint16_t disp_y_size = 319;
static void pin_mode_output(GPIO_TypeDef *GPIOx, uint32_t pin)
{
GPIO_InitTypeDef GPIO_InitStruct;
HAL_GPIO_WritePin(GPIOx, pin, GPIO_PIN_RESET);
GPIO_InitStruct.Pin = pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOx, &GPIO_InitStruct);
}
static void lcd_data_output(void){
RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;
GPIOA->CRL = 0x33333333;
}
//static void lcd_data_input(void){
// RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;
// GPIOA->CRL = 0x88888888;
//}
static void lcd_pulse_low(void){
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_WR, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_WR, GPIO_PIN_SET);
}
static void lcd_bus_write(uint8_t vh, uint8_t vl){
GPIOA->BSRR = vh; // set true values
GPIOA->BSRR = (~vh)<<16;
lcd_pulse_low();
GPIOA->BSRR = vl; // set true values
GPIOA->BSRR = (~vl)<<16;
lcd_pulse_low();
}
void lcd_write_cmd(uint8_t vl){
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RS, GPIO_PIN_RESET);
lcd_bus_write(0x00, vl);
}
void lcd_write_data(uint8_t vh, uint8_t vl){
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RS, GPIO_PIN_SET);
lcd_bus_write(vh, vl);
}
//void lcd_write_data(uint8_t vl){
// HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RS, GPIO_PIN_SET);
// lcd_bus_write(0x00, vl);
//}
void lcd_write_cmd_data(uint8_t cmd, uint16_t data){
lcd_write_cmd(cmd);
lcd_write_data(data>>8, data&0xff );
}
void lcd_set_color(uint8_t r, uint8_t g, uint8_t b)
{
fch=((r&248)|g>>5);
fcl=((g&28)<<3|b>>3);
}
uint32_t lcd_get_color()
{
return (fch<<8) | fcl;
}
void lcd_set_bg_color(uint8_t r, uint8_t g, uint8_t b)
{
bch=((r&248)|g>>5);
bcl=((g&28)<<3|b>>3);
_transparent=false;
}
void lcd_set_xy(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2){
// if (orient==LANDSCAPE)
// {
// swap(word, x1, y1);
// swap(word, x2, y2)
// y1=disp_y_size-y1;
// y2=disp_y_size-y2;
// swap(word, y1, y2)
// }
lcd_write_cmd_data(0x46,(x2 << 8) | x1);
lcd_write_cmd_data(0x47,y2);
lcd_write_cmd_data(0x48,y1);
lcd_write_cmd_data(0x20,x1);
lcd_write_cmd_data(0x21,y1);
lcd_write_cmd(0x22);
}
void lcd_clear_xy()
{
// if (orient==PORTRAIT)
lcd_set_xy(0,0,disp_x_size,disp_y_size);
// else
// setXY(0,0,disp_y_size,disp_x_size);
}
uint32_t lcd_get_bg_color()
{
return (bch<<8) | bcl;
}
void lcd_fast_fill_8(uint16_t ch, long pix)
{
long blocks;
GPIOA->BSRR = ch; // set 1 values
GPIOA->BSRR = (~ch)<<16; // set 0 values
int i;
blocks = pix/16;
for (i=0; i<blocks; i++)
{
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
lcd_pulse_low();lcd_pulse_low();
}
if ((pix % 16) != 0)
for (int i=0; i<(pix % 16)+1; i++)
{
lcd_pulse_low();lcd_pulse_low();
}
}
void lcd_clear_screen()
{
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_RESET);
lcd_clear_xy();
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RS, GPIO_PIN_SET);
lcd_fast_fill_8(0,((disp_x_size+1)*(disp_y_size+1)));
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_SET);
}
void lcd_fill_rect(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2){
if (x1>x2)
{
swap(uint16_t, x1, x2);
}
if (y1>y2)
{
swap(uint16_t, y1, y2);
}
if (fch==fcl)
{
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_RESET);
lcd_set_xy(x1, y1, x2, y2);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RS, GPIO_PIN_SET);
lcd_fast_fill_8(fch, ((x2-x1)+1)*((y2-y1)+1) );
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_SET);
}
// else
// {
//
// for (int i=0; i<((y2-y1)/2)+1; i++)
// {
// drawHLine(x1, y1+i, x2-x1);
// drawHLine(x1, y2-i, x2-x1);
// }
//
//
// }
}
void lcd_init(){
pin_mode_output(LCD_CTRL_PORT, LCD_CS | LCD_RS | LCD_WR | LCD_RST);
lcd_data_output();
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RST, GPIO_PIN_SET);
HAL_Delay(5);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RST, GPIO_PIN_RESET);
HAL_Delay(15);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_RST, GPIO_PIN_SET);
HAL_Delay(15);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_RESET);
lcd_write_cmd_data(0x11,0x2004);
lcd_write_cmd_data(0x13,0xCC00);
lcd_write_cmd_data(0x15,0x2600);
lcd_write_cmd_data(0x14,0x252A);
lcd_write_cmd_data(0x12,0x0033);
lcd_write_cmd_data(0x13,0xCC04);
lcd_write_cmd_data(0x13,0xCC06);
lcd_write_cmd_data(0x13,0xCC4F);
lcd_write_cmd_data(0x13,0x674F);
lcd_write_cmd_data(0x11,0x2003);
lcd_write_cmd_data(0x30,0x2609);
lcd_write_cmd_data(0x31,0x242C);
lcd_write_cmd_data(0x32,0x1F23);
lcd_write_cmd_data(0x33,0x2425);
lcd_write_cmd_data(0x34,0x2226);
lcd_write_cmd_data(0x35,0x2523);
lcd_write_cmd_data(0x36,0x1C1A);
lcd_write_cmd_data(0x37,0x131D);
lcd_write_cmd_data(0x38,0x0B11);
lcd_write_cmd_data(0x39,0x1210);
lcd_write_cmd_data(0x3A,0x1315);
lcd_write_cmd_data(0x3B,0x3619);
lcd_write_cmd_data(0x3C,0x0D00);
lcd_write_cmd_data(0x3D,0x000D);
lcd_write_cmd_data(0x16,0x0007);
lcd_write_cmd_data(0x02,0x0013);
lcd_write_cmd_data(0x03,0x0003);
lcd_write_cmd_data(0x01,0x0127);
lcd_write_cmd_data(0x08,0x0303);
lcd_write_cmd_data(0x0A,0x000B);
lcd_write_cmd_data(0x0B,0x0003);
lcd_write_cmd_data(0x0C,0x0000);
lcd_write_cmd_data(0x41,0x0000);
lcd_write_cmd_data(0x50,0x0000);
lcd_write_cmd_data(0x60,0x0005);
lcd_write_cmd_data(0x70,0x000B);
lcd_write_cmd_data(0x71,0x0000);
lcd_write_cmd_data(0x78,0x0000);
lcd_write_cmd_data(0x7A,0x0000);
lcd_write_cmd_data(0x79,0x0007);
lcd_write_cmd_data(0x07,0x0051);
lcd_write_cmd_data(0x07,0x0053);
lcd_write_cmd_data(0x79,0x0000);
lcd_write_cmd(0x22);
HAL_GPIO_WritePin(LCD_CTRL_PORT, LCD_CS, GPIO_PIN_SET);
lcd_set_color(255,255,255);
lcd_set_bg_color(255,255,255);
lcd_clear_screen();
lcd_fill_rect(disp_x_size/2-25,disp_y_size/2-25,disp_x_size/2+25, disp_y_size/2+25);
}
Raw
lcd.h
#ifndef LCD_H_
#define LCD_H_
/*
* DB0:DB7 will be A0:A7
*
* */
#include "stdbool.h"
#include "stm32f1xx_hal.h"
#define swap(type, i, j) {type t = i; i = j; j = t;}
#define LCD_CTRL_PORT GPIOB
#define LCD_DATA_PORT GPIOA
#define LCD_CS GPIO_PIN_0
#define LCD_RS GPIO_PIN_1
#define LCD_WR GPIO_PIN_10
//#define LCD_RD GPIO_PIN_11
#define LCD_RST GPIO_PIN_11
void lcd_init(void);
#endif /* LCD_H_ */
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