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spi/i2c ver

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Drath Vader
2026-08-21 00:00:10 +02:00
parent 073bcd0d25
commit df7d135577
6 changed files with 227 additions and 270 deletions
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32
README.md
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@@ -8,7 +8,7 @@ For both SPI and I2C displays
I2C version
```c
#include <st7567/st7567-i2c.h>
#include <st7567/st7567.h>
i2c_master_bus_config_t bus_cfg = {
.i2c_port = I2C_NUM_0,
@@ -21,15 +21,15 @@ i2c_master_bus_config_t bus_cfg = {
i2c_master_bus_handle_t bus;
i2c_new_master_bus(&bus_cfg, &bus);
st7567_config_t cfg = {
st7567_config_i2c_t cfg = {
.i2c_bus = bus,
.i2c_addr = ST7567_I2C_ADDR_DEFAULT, // 0x3F,
.i2c_clock_speed_hz = 400000,
.contrast = 0x38, // good for generic modules at 3.3v
};
st7567_device_t dev;
st7567_init(&cfg, &dev);
st7567_set_backlight(&dev, true);
st7567_init_i2c(&cfg, &dev);
st7567_draw_pixel(&dev, 10, 10);
st7567_update_screen(&dev);
@@ -38,11 +38,29 @@ st7567_update_screen(&dev);
SPI version
```c
#include <st7567/st7567-spi.h>
#include <st7567/st7567.h>
const spi_bus_config_t buscfg = {
.mosi_io_num = GPIO_NUM_18,
.sclk_io_num = GPIO_NUM_19,
.miso_io_num = GPIO_NUM_20, // default c6 spi pins?
.max_transfer_sz = 0,
.quadhd_io_num = -1,
.quadwp_io_num = -1,
};
spi_bus_initialize(SPI2_HOST, &buscfg, SPI_DMA_CH_AUTO);
const st7567_config_spi_t cfg = {
.contrast = 0x35,
.cs_gpio = GPIO_NUM_16,
.dc_gpio = GPIO_NUM_17,
.rst_gpio = GPIO_NUM_21,
.spi_clock_speed_hz = 0,
.spi_host = SPI2_HOST,
};
st7567_device_t dev;
st7567_init(&cfg, &dev);
st7567_set_backlight(&dev, true);
st7567_init_spi(&cfg, &dev);
st7567_draw_pixel(&dev, 10, 10);
st7567_update_screen(&dev);