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Example that uses multiple readers (#58)
- Added example that uses 2 readers - Use term 'reader' in other examples as well
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| # For more information about build system see | ||
| # https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html | ||
| # The following five lines of boilerplate have to be in your project's | ||
| # CMakeLists in this exact order for cmake to work correctly | ||
| cmake_minimum_required(VERSION 3.16) | ||
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| include($ENV{IDF_PATH}/tools/cmake/project.cmake) | ||
| project(multiple_readers) |
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| idf_component_register(SRCS "multiple_readers.c" | ||
| INCLUDE_DIRS ".") |
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| dependencies: | ||
| abobija/rc522: | ||
| version: "*" | ||
| override_path: '../../../' |
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| #include <esp_log.h> | ||
| #include "rc522.h" | ||
| #include "driver/rc522_spi.h" | ||
| #include "rc522_picc.h" | ||
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| static const char *TAG = "rc522-multiple-readers-example"; | ||
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| // SPI bus GPIOs | ||
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| #define RC522_SPI_BUS_GPIO_MISO (25) | ||
| #define RC522_SPI_BUS_GPIO_MOSI (23) | ||
| #define RC522_SPI_BUS_GPIO_SCLK (19) | ||
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| // CS GPIOs for each reader | ||
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| #define RC522_SPI_READER_1_GPIO_SDA (22) | ||
| #define RC522_SPI_READER_2_GPIO_SDA (26) | ||
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| // {{ Reader configurations | ||
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| static rc522_spi_config_t reader_1_config = { | ||
| .host_id = VSPI_HOST, | ||
| .bus_config = &(spi_bus_config_t){ | ||
| .miso_io_num = RC522_SPI_BUS_GPIO_MISO, | ||
| .mosi_io_num = RC522_SPI_BUS_GPIO_MOSI, | ||
| .sclk_io_num = RC522_SPI_BUS_GPIO_SCLK, | ||
| }, | ||
| .dev_config = { | ||
| .spics_io_num = RC522_SPI_READER_1_GPIO_SDA, | ||
| }, | ||
| .rst_io_num = -1, // soft-reset | ||
| }; | ||
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| // Second reader does not need bus configuration, | ||
| // since first reader will initialize the bus. | ||
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| static rc522_spi_config_t reader_2_config = { | ||
| .host_id = VSPI_HOST, | ||
| .dev_config = { | ||
| .spics_io_num = RC522_SPI_READER_2_GPIO_SDA, | ||
| }, | ||
| .rst_io_num = -1, // soft-reset | ||
| }; | ||
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| // }} | ||
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| // Drivers | ||
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| static rc522_driver_handle_t driver_1; | ||
| static rc522_driver_handle_t driver_2; | ||
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| // Readers | ||
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| static rc522_handle_t reader_1; | ||
| static rc522_handle_t reader_2; | ||
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| // Event handler | ||
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| static void on_picc_state_changed(void *arg, esp_event_base_t base, int32_t event_id, void *data) | ||
| { | ||
| rc522_handle_t reader = (rc522_handle_t)arg; | ||
| rc522_picc_state_changed_event_t *event = (rc522_picc_state_changed_event_t *)data; | ||
| rc522_picc_t *picc = event->picc; | ||
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| uint8_t reader_no = 1; | ||
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| if (reader == reader_2) { | ||
| reader_no = 2; | ||
| } | ||
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| if (picc->state == RC522_PICC_STATE_ACTIVE) { | ||
| ESP_LOGI(TAG, "Card detected on the scanner #%d", reader_no); | ||
| rc522_picc_print(picc); | ||
| } | ||
| else if (picc->state == RC522_PICC_STATE_IDLE && event->old_state >= RC522_PICC_STATE_ACTIVE) { | ||
| ESP_LOGI(TAG, "Card has been removed from the scanner #%d", reader_no); | ||
| } | ||
| } | ||
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| // App entry point | ||
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| void app_main() | ||
| { | ||
| // Create drivers | ||
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| rc522_spi_create(&reader_1_config, &driver_1); | ||
| rc522_spi_create(&reader_2_config, &driver_2); | ||
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| // Install drivers | ||
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| rc522_driver_install(driver_1); | ||
| rc522_driver_install(driver_2); | ||
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| // Create readers | ||
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| rc522_create( | ||
| &(rc522_config_t) { | ||
| .driver = driver_1, | ||
| }, | ||
| &reader_1); | ||
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| rc522_create( | ||
| &(rc522_config_t) { | ||
| .driver = driver_2, | ||
| }, | ||
| &reader_2); | ||
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| // Register events for each reader | ||
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| rc522_register_events(reader_1, RC522_EVENT_PICC_STATE_CHANGED, on_picc_state_changed, reader_1); | ||
| rc522_register_events(reader_2, RC522_EVENT_PICC_STATE_CHANGED, on_picc_state_changed, reader_2); | ||
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| // Start readers | ||
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| rc522_start(reader_1); | ||
| rc522_start(reader_2); | ||
| } |
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