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Shaun Reed 2025-03-01 16:51:57 -05:00
parent a91352ffcd
commit a3d6a85516
5 changed files with 6 additions and 14 deletions
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4
esp/cpp/07_lcd-panel-i2c/README.md
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@ -2,8 +2,6 @@
Using the ESP IDF for drawing to a LCD screen over I2C. Using the ESP IDF for drawing to a LCD screen over I2C.
For instructions on setting up the ESP-IDF see [04_-esp-idf-arduino](./../04_esp-idf-arduino)
[ESP IDF - I2C](https://docs.espressif.com/projects/esp-idf/en/v5.3.2/esp32/api-reference/peripherals/i2c.html) [ESP IDF - I2C](https://docs.espressif.com/projects/esp-idf/en/v5.3.2/esp32/api-reference/peripherals/i2c.html)
[ESP IDF - LCD](https://docs.espressif.com/projects/esp-idf/en/v5.3.2/esp32/api-reference/peripherals/lcd/index.html) [ESP IDF - LCD](https://docs.espressif.com/projects/esp-idf/en/v5.3.2/esp32/api-reference/peripherals/lcd/index.html)
@ -14,6 +12,8 @@ For instructions on setting up the ESP-IDF see [04_-esp-idf-arduino](./../04_esp
![example](./example.gif) ![example](./example.gif)
For instructions on setting up the ESP-IDF see [04_-esp-idf-arduino](./../04_esp-idf-arduino)
To build this example run the following commands. To build this example run the following commands.
```bash ```bash

6
esp/cpp/07_lcd-panel-i2c/main/display.cpp
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@ -5,12 +5,8 @@
## Contact: shaunrd0@gmail.com | URL: www.shaunreed.com ## ## Contact: shaunrd0@gmail.com | URL: www.shaunreed.com ##
############################################################################## ##############################################################################
*/ */
#include <esp_timer.h>
#include <lv_init.h> #include <lv_init.h>
#include <mutex>
#include "display.h" #include "display.h"
// Static TimeKeeper for managing ESP timers across all displays. // Static TimeKeeper for managing ESP timers across all displays.
@ -49,7 +45,7 @@ void Display::set_text(const char *text,
} }
auto obj = lv_objects_[name]; auto obj = lv_objects_[name];
// Circular scroll. // Set text and long mode.
lv_label_set_long_mode(obj, long_mode); lv_label_set_long_mode(obj, long_mode);
lv_label_set_text(obj, text); lv_label_set_text(obj, text);

2
esp/cpp/07_lcd-panel-i2c/main/panel_device.cpp
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@ -7,8 +7,6 @@
*/ */
#include "panel_device.h" #include "panel_device.h"
#include "display.h" #include "display.h"
#include "scoped_lock.h"
#include "time_keeper.h"
bool IPanelDevice::lvgl_flush_ready_cb(esp_lcd_panel_io_handle_t, bool IPanelDevice::lvgl_flush_ready_cb(esp_lcd_panel_io_handle_t,
esp_lcd_panel_io_event_data_t *, esp_lcd_panel_io_event_data_t *,

2
esp/cpp/07_lcd-panel-i2c/main/panel_device.h
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@ -218,7 +218,7 @@ public:
esp_lcd_panel_del(panel); esp_lcd_panel_del(panel);
} }
ESP_LOGI(TAG, "Install SSD1306 panel driver"); ESP_LOGI(TAG, "Installing vendor panel driver");
// Call pure virtual method responsible for initializing the panel handle. // Call pure virtual method responsible for initializing the panel handle.
init_panel(config, io, panel); init_panel(config, io, panel);
} }

4
esp/cpp/07_lcd-panel-i2c/main/time_keeper.h
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@ -18,7 +18,6 @@
* In general Timers should be used via the TimeKeeper interface only. * In general Timers should be used via the TimeKeeper interface only.
* *
* Timers cannot be copied, and are only created by a TimeKeeper instance. * Timers cannot be copied, and are only created by a TimeKeeper instance.
* The public way to access a Timer is by obtaining a TimerHandle (Timer *).
* The TimeKeeper can delete existing Timers, calling it's destructor. * The TimeKeeper can delete existing Timers, calling it's destructor.
* The ESP timer will be deleted when this class desctructor is called. * The ESP timer will be deleted when this class desctructor is called.
*/ */
@ -133,8 +132,7 @@ struct TimeKeeper {
} }
/// Create a Timer with the ESP args and call esp_timer_start_once. /// Create a Timer with the ESP args and call esp_timer_start_once.
[[maybe_unused]] void [[maybe_unused]] void start_new_timer_once(esp_timer_create_args_t args,
start_new_timer_once(esp_timer_create_args_t args,
uint64_t timeout_us) uint64_t timeout_us)
{ {
start_timer_once(create_timer(args)->args_.name, timeout_us); start_timer_once(create_timer(args)->args_.name, timeout_us);