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SSD1306 OLED Display driver refactored (#290)

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* SSD1306 OLED Display driver SPI refactored:
- SPI connection support
- different display sizes support

* I2C address added to device descriptor

* Small fix
This commit is contained in:
Ruslan V. Uss 2016-11-29 04:57:22 +06:00 • committed by sheinz
parent 2d933cf0e4
commit b807eefeaf
11 changed files with 710 additions and 343 deletions
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0
examples/ssd1306_i2c/Makefile → examples/ssd1306_example/Makefile
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3
examples/ssd1306_example/README.md Normal file
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@ -0,0 +1,3 @@
# SSD1306 I2C/SPI OLED LCD Example
To run this example connect the SSD1306 OLED LCD and configure protocol, display size and pins in main.c file.

0
examples/ssd1306_i2c/image.xbm → examples/ssd1306_example/image.xbm
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96
examples/ssd1306_example/main.c Normal file
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#include <espressif/esp_common.h>
#include <esp/uart.h>
#include <FreeRTOS.h>
#include <task.h>
#include <queue.h>
#include <string.h>
#include <ssd1306/ssd1306.h>
/* Remove this line if your display connected by SPI */
#define I2C_CONNECTION
#ifdef I2C_CONNECTION
#include <i2c/i2c.h>
#endif
#include "image.xbm"
/* Change this according to you schematics and display size */
#define DISPLAY_WIDTH 128
#define DISPLAY_HEIGHT 64
#ifdef I2C_CONNECTION
#define PROTOCOL SSD1306_PROTO_I2C
#define ADDR SSD1306_I2C_ADDR_0
#define SCL_PIN 5
#define SDA_PIN 4
#else
#define PROTOCOL SSD1306_PROTO_SPI4
#define CS_PIN 5
#define DC_PIN 4
#endif
/* Declare device descriptor */
static const ssd1306_t dev = {
.protocol = PROTOCOL,
#ifdef I2C_CONNECTION
.addr = ADDR,
#else
.cs_pin = CS_PIN,
.dc_pin = DC_PIN,
#endif
.width = DISPLAY_WIDTH,
.height = DISPLAY_HEIGHT
};
/* Local frame buffer */
static uint8_t buffer[DISPLAY_WIDTH * DISPLAY_HEIGHT / 8];
static void ssd1306_task(void *pvParameters)
{
printf("%s: Started user interface task\n", __FUNCTION__);
vTaskDelay(1000/portTICK_PERIOD_MS);
if (ssd1306_load_xbm(&dev, image_bits, buffer))
goto error_loop;
ssd1306_set_whole_display_lighting(&dev, false);
bool fwd = false;
while (1) {
vTaskDelay(2000 / portTICK_PERIOD_MS);
printf("%s: still alive, flipping!\n", __FUNCTION__);
ssd1306_set_scan_direction_fwd(&dev, fwd);
fwd = !fwd;
}
error_loop:
printf("%s: error while loading framebuffer into SSD1306\n", __func__);
for(;;){
vTaskDelay(2000 / portTICK_PERIOD_MS);
printf("%s: error loop\n", __FUNCTION__);
}
}
void user_init(void)
{
// Setup HW
uart_set_baud(0, 115200);
printf("SDK version:%s\n", sdk_system_get_sdk_version());
#ifdef I2C_CONNECTION
i2c_init(SCL_PIN, SDA_PIN);
#endif
while (ssd1306_init(&dev) != 0)
{
printf("%s: failed to init SSD1306 lcd\n", __func__);
vTaskDelay(1000/portTICK_PERIOD_MS);
}
ssd1306_set_whole_display_lighting(&dev, true);
vTaskDelay(1000/portTICK_PERIOD_MS);
// Create user interface task
xTaskCreate(ssd1306_task, "ssd1306_task", 256, NULL, 2, NULL);
}

3
examples/ssd1306_i2c/README.md
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@ -1,3 +0,0 @@
# I2C / SSD1306 OLED LCD Example
To run this example connect the SSD1306 OLED LCD and configure SDA/SCL pins in ssd1306_i2c.c file.

65
examples/ssd1306_i2c/ssd1306_i2c.c
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@ -1,65 +0,0 @@
#include "espressif/esp_common.h"
#include "esp/uart.h"
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include <string.h>
#include "i2c/i2c.h"
#include "ssd1306/ssd1306.h"
#include "image.xbm"
/* Change this according to you schematics */
#define SCL_PIN GPIO_ID_PIN((14))
#define SDA_PIN GPIO_ID_PIN((12))
/* Local frame buffer */
static uint8_t buffer[SSD1306_ROWS * SSD1306_COLS / 8];
static void ssd1306_task(void *pvParameters)
{
printf("%s: Started user interface task\n", __FUNCTION__);
vTaskDelay(1000/portTICK_PERIOD_MS);
if (ssd1306_load_xbm(image_bits, buffer))
goto error_loop;
ssd1306_set_whole_display_lighting(false);
while (1) {
vTaskDelay(2000 / portTICK_PERIOD_MS);
printf("%s: steel alive\n", __FUNCTION__);
}
error_loop:
printf("%s: error while loading framebuffer into SSD1306\n", __func__);
for(;;){
vTaskDelay(2000 / portTICK_PERIOD_MS);
printf("%s: error loop\n", __FUNCTION__);
}
}
void user_init(void)
{
// Setup HW
uart_set_baud(0, 115200);
printf("SDK version:%s\n", sdk_system_get_sdk_version());
i2c_init(SCL_PIN, SDA_PIN);
if (ssd1306_init()){
for (;;) {
printf("%s: failed to init SSD1306 lcd\n", __func__);
vTaskDelay(1000/portTICK_PERIOD_MS);
}
}
ssd1306_set_whole_display_lighting(true);
vTaskDelay(1000/portTICK_PERIOD_MS);
// Create user interface task
xTaskCreate(ssd1306_task, "ssd1306_task", 256, NULL, 2, NULL);
}