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boards/esp32s2-devkit: enable RGB LED support

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This commit is contained in:
Gunar Schorcht 2023-03-18 11:40:17 +01:00
parent f7c7337efb
commit 2ff7ae5de7
2 changed files with 14 additions and 6 deletions
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6
boards/esp32s2-devkit/doc.txt
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@ -102,8 +102,7 @@ see section \ref esp32_mcu_esp32 "ESP32 SoC Series".
### Board Configuration {#esp32s2_devkit_board_configuration}
ESP32-S2-DevKit boards have no special hardware on board with the exception
of a single pin RGB-LED that uses a special bit-oriented protocol to
control the RGB-LED by 24-bit RGB values which is not supported yet.
of a single pin RGB-LED.
All GPIOs are simply broken out for flexibility. Therefore, the board
configuration is the most flexible one which provides:
@ -150,11 +149,12 @@ Function | GPIOs | Remarks | Configuration
:---------------|:-------|:--------|:----------------------------------
BUTTON0 | GPIO0 | | |
ADC_LINE(n) | GPIO1 ... GPIO10 | | \ref esp32_adc_channels "ADC Channels"
DAC_LINE(n) | GPIO17, GPIO18 | | \ref esp32_dac_channels "DAC Channels"
DAC_LINE(n) | GPIO17, GPIO18 | GPIO18 is connected to RGB-LED | \ref esp32_dac_channels "DAC Channels"
I2C_DEV(0) SCL | GPIO9 | | \ref esp32_i2c_interfaces "I2C Interfaces"
I2C_DEV(0) SDA | GPIO8 | | \ref esp32_i2c_interfaces "I2C Interfaces"
PWM_DEV(0) | GPIO11, GPIO12, GPIO13, GPIO14 | - | \ref esp32_pwm_channels "PWM Channels"
PWM_DEV(1) | GPIO15, GPIO16 | if module `esp_rtc_timer_32k` is not used | \ref esp32_pwm_channels "PWM Channels"
RGB-LED | GPIO18 | supported by driver module `ws281x` | |
SPI_DEV(0) CLK | GPIO12 | SPI2_HOST (FSPI) is used | \ref esp32_spi_interfaces "SPI Interfaces"
SPI_DEV(0) MISO | GPIO13 | SPI2_HOST (FSPI) is used | \ref esp32_spi_interfaces "SPI Interfaces"
SPI_DEV(0) MOSI | GPIO11 | SPI2_HOST (FSPI) is used | \ref esp32_spi_interfaces "SPI Interfaces"

14
boards/esp32s2-devkit/include/board.h
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@ -75,11 +75,19 @@
* @name LED (on-board) configuration
*
* ESP32-S2-DevKit boards have a SK68XXMINI-HS smart RGB-LED connected to
* GPIO18 on-board. This RGB-LEDs uses a special bit-oriented protocol to
* control the RGB-LED by 24-bit RGB values. Therefore, it can't be used as
* default LED definition for RIOT.
* GPIO18 on-board. The WS281x driver module `ws281x` can be used to control it.
*
* @note GPIO18 is also be defined as DAC channel. The RGB-LED can be
* used as long as GPIO18 is not initialized as DAC channel with the
* function `dac_init`.
* @{
*/
#ifndef WS281X_PARAM_PIN
#define WS281X_PARAM_PIN (GPIO18) /**< GPIO pin connected to the data pin */
#endif
#ifndef WS281X_PARAM_NUMOF
#define WS281X_PARAM_NUMOF (1U) /**< Number of LEDs chained */
#endif
/** @} */
/* include common board definitions as last step */