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lcd-clock - initial commit

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This commit is contained in:
Thomas Klaehn
2020-02-13 11:00:05 +00:00
commit 495f2861e7
17 changed files with 1482 additions and 0 deletions
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168
include/posix/board.h Normal file
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#ifndef __BOARD_H__
#define __BOARD_H__
#include "driver.h"
#include "posix/i2c.h"
#include "ssd1306.h"
#include "st7789.h"
#include "gpio.h"
#include "spi.h"
// Board file for the posix board
//// ST7789 LCD
// spi
static const char * const spi_dev_name = "/dev/spidev0.0";
static struct spi spi0 = {
.spi_device = spi_dev_name,
.mode = SPI_MODE_0,
.bits_per_word = 8,
.speed = 20000000,
};
static const struct driver spi0_drv = {
.fp = &spi_fp,
.dev = &spi0,
};
// data/command select gpio
static const struct gpio dc_select = {
.pin = 25,
};
static const struct driver dc_drv = {
.fp = &gpio_fp,
.dev = &dc_select,
};
// backlight gpio
static const struct gpio bl_select = {
.pin = 24,
};
static const struct driver bl_drv = {
.fp = &gpio_fp,
.dev = &bl_select,
};
// reset gpio
static const struct gpio rst_select = {
.pin = 27,
};
static const struct driver rst_drv = {
.fp = &gpio_fp,
.dev = &rst_select,
};
// lcd
static const struct st7789 lcd_dev = {
.spi = &spi0_drv,
.dc = &dc_drv,
.bl = &bl_drv,
.rst = &rst_drv,
.height = 240,
.width = 240,
};
static const struct driver lcd_drv = {
.fp = &st7789_fp,
.dev = &lcd_dev,
};
#if 0
// I2C driver
static const char * const i2c_dev_name = "/dev/i2c-1";
static struct i2c i2c_dev = {
.i2c_device = i2c_dev_name,
.slave_addr = 0x3c,
};
const char i2c_name[] = "i2c-1";
static const struct driver i2c_drv = {
.name = i2c_name,
.fp = &i2c_fp,
.dev = &i2c_dev,
};
// SSD 1306 driver
static char display_buffer[(SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8) + 1] = {
0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xFF, 0xFF, 0x00, 0x38, 0xFE, 0xC7, 0x83, 0x01, 0x01, 0x01, 0x83, 0xC7, 0xFF, 0xFF, 0x00, 0x00,
0x01, 0xFF, 0xFF, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x07, 0x01, 0x01, 0x01, 0x00, 0x00, 0x7F, 0xFF,
0x80, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x7F, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0xFF,
0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x8F, 0x9F, 0xBF, 0xFF, 0xFF, 0xC3, 0xC0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x00, 0x30, 0x30, 0x00, 0x00,
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0x00, 0xC0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x3F, 0x1F,
0x0F, 0x07, 0x1F, 0x7F, 0xFF, 0xFF, 0xF8, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xF8, 0xE0,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00,
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};
static const struct ssd1306 display_dev = {
.output_dev = &i2c_drv,
.output_buffer = &display_buffer[0],
.bitmap = &display_buffer[1],
.width = SSD1306_LCDWIDTH,
.heigth = SSD1306_LCDHEIGHT,
};
const char ssd1306_name[] = "ssd1306";
static const struct driver ssd1306_drv = {
.name = ssd1306_name,
.fp = &ssd1306_fp,
.dev = &display_dev,
};
#endif
#endif

29
include/posix/gpio.h Normal file
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@@ -0,0 +1,29 @@
#ifndef __GPIO_H__
#define __GPIO_H__
#include <stdarg.h>
#include "driver.h"
#define IOCTL_CMD_SET_DIRECTION 0
int gpio_open(const struct driver *drv);
int gpio_close(const struct driver *drv);
int gpio_read(const struct driver *drv, char *buffer, unsigned int len);
int gpio_write(const struct driver *drv, const char *buffer, unsigned int len);
int gpio_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args);
struct gpio {
int pin;
};
static const struct driver_fp gpio_fp = {
.open = gpio_open,
.close = gpio_close,
.read = gpio_read,
.write = gpio_write,
.ioctl = gpio_ioctl
};
#endif

25
include/posix/i2c.h Normal file
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@@ -0,0 +1,25 @@
#ifndef __I2C_H__
#define __I2C_H__
#include "driver.h"
int i2c_open(const struct driver *drv);
int i2c_close(const struct driver *drv);
int i2c_read(const struct driver *drv, char *buffer, unsigned int len);
int i2c_write(const struct driver *drv, const char *buffer, unsigned int len);
struct i2c {
const char * i2c_device;
const uint8_t slave_addr;
int i2c_file;
};
static const struct driver_fp i2c_fp = {
.open = i2c_open,
.close = i2c_close,
.read = i2c_read,
.write = i2c_write,
};
#endif

37
include/posix/spi.h Normal file
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@@ -0,0 +1,37 @@
#ifndef __SPI_H__
#define __SPI_H__
#include <stdarg.h>
#include <stdint.h>
#include <stdbool.h>
#include <linux/spi/spidev.h>
#include "driver.h"
int spi_open(const struct driver *drv);
int spi_close(const struct driver *drv);
int spi_read(const struct driver *drv, char *buffer, unsigned int len);
int spi_write(const struct driver *drv, const char *buffer, unsigned int len);
int spi_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args);
struct spi {
const char * spi_device;
uint8_t mode;
uint8_t bits_per_word;
uint32_t speed;
int spi_file;
bool is_open;
};
static const struct driver_fp spi_fp = {
.open = spi_open,
.close = spi_close,
.read = spi_read,
.write = spi_write,
.ioctl = spi_ioctl,
};
#endif

37
include/ssd1306.h Normal file
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@@ -0,0 +1,37 @@
#ifndef __SSD1306_H__
#define __SSD1306_H__
#include <stdarg.h>
#include "driver.h"
#define SSD1306_LCDWIDTH 128
#define SSD1306_LCDHEIGHT 64
#define IOCTL_CMD_CLS 0
#define IOCTL_CMD_REFRESH 1
#define IOCTL_CMD_DRAW_PIXEL 2
#define IOCTL_CMD_DRAW_LINE 3
#define IOCTL_CMD_DRAW_CIRCLE 4
int ssd1306_open(const struct driver *drv);
int ssd1306_close(const struct driver *drv);
int ssd1306_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args);
struct ssd1306 {
const struct driver *output_dev;
char *output_buffer;
char *bitmap;
uint32_t width;
uint32_t heigth;
};
static const struct driver_fp ssd1306_fp = {
.open = ssd1306_open,
.close = ssd1306_close,
.read = NULL,
.write = NULL,
.ioctl = ssd1306_ioctl,
};
#endif

32
include/st7789.h Normal file
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@@ -0,0 +1,32 @@
#ifndef __ST7789_H__
#define __ST7789_H__
#include <stdarg.h>
#include "driver.h"
#define IOCTL_CMD_DRAW_IMAGE 0
int st7789_open(const struct driver *drv);
int st7789_close(const struct driver *drv);
int st7789_write(const struct driver *drv, const char *buffer, unsigned int len);
struct st7789 {
const struct driver *spi;
const struct driver *dc;
const struct driver *bl;
const struct driver *rst;
unsigned int height;
unsigned int width;
};
static const struct driver_fp st7789_fp = {
.open = st7789_open,
.close = st7789_close,
.read = NULL,
.write = st7789_write,
.ioctl = NULL,
};
#endif