Add build support for TenStar Esp32-C3 SuperMini #8434
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| #ifndef Pins_Arduino_h | ||
| #define Pins_Arduino_h | ||
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| #include <stdint.h> | ||
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| static const uint8_t TX = 21; | ||
| static const uint8_t RX = 20; | ||
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| static const uint8_t SDA = 8; | ||
| static const uint8_t SCL = 9; | ||
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| static const uint8_t SS = 7; | ||
| static const uint8_t MOSI = 6; | ||
| static const uint8_t MISO = 5; | ||
| static const uint8_t SCK = 4; | ||
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| static const uint8_t A0 = 0; | ||
| static const uint8_t A1 = 1; | ||
| static const uint8_t A2 = 2; | ||
| static const uint8_t A3 = 3; | ||
| static const uint8_t A4 = 4; | ||
| static const uint8_t A5 = 5; | ||
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| #endif /* Pins_Arduino_h */ |
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| ; TenStar ESP32 C3 Super Mini Development Board | ||
| ; https://forum.arduino.cc/t/esp32-c3-supermini-pinout/1189850 | ||
| ; Note: Pinout is different than Espressif ESP32-C3 Super Mini | ||
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| [env:esp32c3_super_mini_tenstar] | ||
| extends = esp32c3_base | ||
| board = esp32-c3-devkitm-1 | ||
| board_build.mcu = esp32c3 | ||
| board_build.f_cpu = 160000000L | ||
| build_flags = | ||
| ${esp32_base.build_flags} | ||
| -D PRIVATE_HW | ||
| -I variants/esp32c3/diy/esp32c3_super_mini_tenstar | ||
| -D ARDUINO_USB_MODE=1 | ||
| -D ARDUINO_USB_CDC_ON_BOOT=1 | ||
| board_level = extra |
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| #ifndef _VARIANT_ESP32C3_SUPER_MINI_TENSTAR_ | ||
| #define _VARIANT_ESP32C3_SUPER_MINI_TENSTAR_ | ||
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| /*---------------------------------------------------------------------------- | ||
| * Headers | ||
| *----------------------------------------------------------------------------*/ | ||
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif // __cplusplus | ||
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| // I2C (Wire) & OLED | ||
| #define WIRE_INTERFACES_COUNT (1) | ||
| #define I2C_SDA (8) | ||
| #define I2C_SCL (9) | ||
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| #define USE_SSD1306 | ||
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| // GPS | ||
| #undef GPS_RX_PIN | ||
| #undef GPS_TX_PIN | ||
| #define GPS_RX_PIN (20) | ||
| #define GPS_TX_PIN (21) | ||
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| // Button, active LOW | ||
| #define BUTTON_PIN (10) | ||
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| // LoRa | ||
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There was a problem hiding this comment. Can you expand on why you chose these pins? For reference, the ones in the original super_mini were chosen because they matched the existing Heltec HT-CT62 internal pins, and were therefore known to be usable. There was a problem hiding this comment. In my understanding on this board, UART, SPI, I2C are fixed, so only pins 0, 1, 2, 3 and 10 are available. Did I missed something? 
There was a problem hiding this comment. Ah, on the esp32c3 they're not fixed functions. I'm not sure why they've used them in this way. I'd strongly suggest rethinking the use of io9 for anything other than the button that it is connected to. |
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| #define USE_LLCC68 | ||
| // TODO: why enable SX126x if not used ? | ||
| // Note: without these, LoRa will not work correctly | ||
| #define USE_SX1262 | ||
| // #define USE_RF95 | ||
| #define USE_SX1268 | ||
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| #define LORA_DIO0 RADIOLIB_NC | ||
| #define LORA_RESET (0) | ||
| #define LORA_DIO1 (1) | ||
| #define LORA_RXEN (2) | ||
| #define LORA_BUSY (3) | ||
| #define LORA_SCK (4) | ||
| #define LORA_MISO (5) | ||
| #define LORA_MOSI (6) | ||
| #define LORA_CS (7) | ||
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| #define SX126X_CS LORA_CS | ||
| #define SX126X_DIO1 LORA_DIO1 | ||
| #define SX126X_BUSY LORA_BUSY | ||
| #define SX126X_RESET LORA_RESET | ||
| #define SX126X_RXEN LORA_RXEN | ||
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| #define SX126X_DIO3_TCXO_VOLTAGE (1.8) | ||
| #define TCXO_OPTIONAL // make it so that the firmware can try both TCXO and XTAL | ||
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| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
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| /*---------------------------------------------------------------------------- | ||
| * Arduino objects - C++ only | ||
| *----------------------------------------------------------------------------*/ | ||
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| #endif | ||
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I traced the boot button through to pin 9 on my boards, and the very-difficult-to-read schematic on the Tenstar Robot store Aliexpress page also seems to indicate that it is linked to GPIO9.
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I tried PIN8 and PIN9 for button but in both cases the I2C got stuck: display, sensors, nothing communicates. So I moved to an other pin, in this case PIN10. Maybe I should change the comments: "Connect Button to this pin, active LOW"
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See my comment below. Io9 is a strapping pin, and also connected to a button, so using it for anything other than a user button doesn't make sense.
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Just to confirm - Esp32C3 datasheet says that GPIO9 used for bootmode selection, so it have to be wired to boot btn )