feathers2_apa102
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feathers2_apa102 [2024/03/26 10:10] sausage |
feathers2_apa102 [2024/04/04 21:34] (current) sausage [Setting up an ESP32-S2 project] |
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| - | ====== FeatherS2 ESP32-S2 APA102 ====== | + | ====== ESP32-S2 and the APA102 RGB LED ====== |
| {{ ::esp32s2:feathers2.jpg?direct&400|}} | {{ ::esp32s2:feathers2.jpg?direct&400|}} | ||
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| - | ===== Setting up an ESP32 or ESP32-S2 project ===== | + | ===== Setting up an ESP32-S2 project ===== |
| In order that we can get the RGB LED working together, let's make a new project. | In order that we can get the RGB LED working together, let's make a new project. | ||
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| We now have a build folder where our firmware will be built. | We now have a build folder where our firmware will be built. | ||
| - | We have to make two settings in our menuconfig to ensure our firmware does not crash: | + | We to make a change in our menuconfig to ensure we can get debug information through USB: |
| idf.py menuconfig | idf.py menuconfig | ||
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| </code> | </code> | ||
| - | To explain the initApa102 function, we have a minimal SPI config and a minimal SPI bus config. The SPI bus is initialised with the SPI config along with which SPI host it is for. The SPI bus config and the SPI host is passed a new device. ****** | + | To explain the initApa102 function, we have a minimal SPI Interface Config and a minimal SPI Bus Config. These configs are set to a SPI host device it is for. |
| - | Note the host is FSPI_HOST. This is the host that is controlling the LED. On ESP32 boards (non S2), this SPI is named HSPI_HOST. | + | Our host is ''FSPI_HOST''. This is one that is controlling the LED. On ESP32 boards (non S2), this SPI is named ''HSPI_HOST''. |
| See: https://github.com/espressif/esp-idf/blob/357a2776032299b8bc4044900a8f1d6950d7ce89/components/hal/include/hal/spi_types.h#L47-L57 | See: https://github.com/espressif/esp-idf/blob/357a2776032299b8bc4044900a8f1d6950d7ce89/components/hal/include/hal/spi_types.h#L47-L57 | ||
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| The LED won't come on? There are a number of things to re-check: | The LED won't come on? There are a number of things to re-check: | ||
| - | - Ensure USB CDC is set in the menuconfig or the board firmware will fail. | + | - Firmware may have crashed. Ensure USB CDC is set in the menuconfig. |
| - Ensure RGB_DATA_PIN is set to mosi_io_num and RGB_CLK_PIN to sclk_io_num. Check it's not the wrong way around. | - Ensure RGB_DATA_PIN is set to mosi_io_num and RGB_CLK_PIN to sclk_io_num. Check it's not the wrong way around. | ||
| - Ensure pin 21 is on to supply power. | - Ensure pin 21 is on to supply power. | ||
feathers2_apa102.1711447856.txt.gz ยท Last modified: 2024/03/26 10:10 by sausage
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