104 lines
3.2 KiB
Markdown
104 lines
3.2 KiB
Markdown
# ESP32 ESP-IDF component for TM1637 led drive (via RMT driver)
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## Tested on
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1. [ESP32 ESP-IDF v6.0.1](https://docs.espressif.com/projects/esp-idf/en/v6.0.1/esp32/index.html)
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## SAST Tools
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[PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) - static analyzer for C, C++, C#, and Java code.
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## Features
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1. Support up to 4 led drives on one device (depends on the used ESP32 chip).
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## Note
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1. Just simple driver without any additives.
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## Attention
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1. Original ESP32, ESP32-S2 and ESP32-C2 not supported.
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2. For correct operation, please enable the following settings in the menuconfig:
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```text
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CONFIG_RMT_ENCODER_FUNC_IN_IRAM=y
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CONFIG_RMT_TX_ISR_HANDLER_IN_IRAM=y
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CONFIG_RMT_TX_ISR_CACHE_SAFE=y
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```
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## Using
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In an existing project, run the following command to install the components:
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```text
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cd ../your_project/components
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git clone https://github.com/aZholtikov/zh_tm1637
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```
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In the application, add the component:
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```c
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#include "zh_tm1637.h"
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```
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## Examples
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One 4 segment led drive on device:
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```c
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// Numerical symbols without dot (with dot).
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// 0x3F (0xBF) - 0 (0.).
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// 0x06 (0x86) - 1 (1.).
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// 0x5B (0xDB) - 2 (2.).
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// 0x4F (0xCF) - 3 (3.).
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// 0x66 (0xE6) - 4 (4.).
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// 0x6D (0xED) - 5 (5.).
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// 0x7D (0xFD) - 6 (6.).
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// 0x07 (0x87) - 7 (7.).
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// 0x7F (0xFF) - 8 (8.).
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// 0x6F (0xEF) - 9 (9.).
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// 0x40 - Minus.
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// 0x00 - Empty.
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// 0x80 - Dot.
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#include "zh_tm1637.h"
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zh_tm1637_handle_t tm1637_handle = {0};
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void app_main(void)
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{
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esp_log_level_set("zh_tm1637", ESP_LOG_ERROR);
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zh_tm1637_init_config_t config = ZH_TM1637_INIT_CONFIG_DEFAULT();
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config.clk_gpio = GPIO_NUM_25;
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config.dio_gpio = GPIO_NUM_26;
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zh_tm1637_init(&config, &tm1637_handle);
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zh_tm1637_set_brightness(&tm1637_handle, 7); // Set brightness.
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uint8_t clear_symbols[4] = {0x00};
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zh_tm1637_print(&tm1637_handle, 0, clear_symbols, sizeof(clear_symbols)); // Clear LCD.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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for (;;)
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{
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uint8_t symbol = 0x3F;
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zh_tm1637_print(&tm1637_handle, 0, &symbol, sizeof(symbol)); // 0 on 0 position.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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zh_tm1637_print(&tm1637_handle, 1, &symbol, sizeof(symbol)); // 0 on 1 position.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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zh_tm1637_print(&tm1637_handle, 0, clear_symbols, sizeof(clear_symbols)); // Clear LCD.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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uint8_t symbols[] = {0x40, 0x06, 0x5B, 0x4F};
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zh_tm1637_print(&tm1637_handle, 0, symbols, sizeof(symbols)); // -123 start from 0 position.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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zh_tm1637_print(&tm1637_handle, 0, clear_symbols, sizeof(clear_symbols)); // Clear LCD.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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zh_tm1637_print(&tm1637_handle, 1, symbols, sizeof(symbols)); // -123 start from 1 position.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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zh_tm1637_print(&tm1637_handle, 0, clear_symbols, sizeof(clear_symbols)); // Clear LCD.
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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const zh_tm1637_stats_t *stats = zh_tm1637_get_stats();
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printf("Number of RMT driver error: %ld.\n", stats->rmt_driver_error);
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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}
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```
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