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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} ### Board Configuration {#esp32s2_devkit_board_configuration}
ESP32-S2-DevKit boards have no special hardware on board with the exception 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 of a single pin RGB-LED.
control the RGB-LED by 24-bit RGB values which is not supported yet.
All GPIOs are simply broken out for flexibility. Therefore, the board All GPIOs are simply broken out for flexibility. Therefore, the board
configuration is the most flexible one which provides: configuration is the most flexible one which provides:
@ -150,11 +149,12 @@ Function | GPIOs | Remarks | Configuration
:---------------|:-------|:--------|:---------------------------------- :---------------|:-------|:--------|:----------------------------------
BUTTON0 | GPIO0 | | | BUTTON0 | GPIO0 | | |
ADC_LINE(n) | GPIO1 ... GPIO10 | | \ref esp32_adc_channels "ADC Channels" 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) SCL | GPIO9 | | \ref esp32_i2c_interfaces "I2C Interfaces"
I2C_DEV(0) SDA | GPIO8 | | \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(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" 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) 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) 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" 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 * @name LED (on-board) configuration
* *
* ESP32-S2-DevKit boards have a SK68XXMINI-HS smart RGB-LED connected to * 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 * GPIO18 on-board. The WS281x driver module `ws281x` can be used to control it.
* control the RGB-LED by 24-bit RGB values. Therefore, it can't be used as *
* default LED definition for RIOT. * @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 */ /* include common board definitions as last step */