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esp32/machine_hw_spi: Set proper default SPI(id=2) pins on S2 and S3.

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Use IO_MUX pins as defined by ESP IDF in soc/esp32/include/soc/spi_pins.h

ESP32S2 and S3 don't have IO_MUX pins for SPI3, GPIO matrix is always used.
Choose suitable defaults for S2 and S3.

ESP32C3 does not have SPI3 at all.  Don't define pin mappings for it.

Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Tomas Vanek 2021-11-29 16:49:11 +01:00 committed by Damien George
parent d08886558b
commit e761152d72
1 changed files with 15 additions and 4 deletions
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19
ports/esp32/machine_hw_spi.c
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@ -63,11 +63,20 @@
#endif
#endif
// Default pins for SPI(2), can be overridden by a board
// Default pins for SPI(id=2) aka IDF SPI3, can be overridden by a board
#ifndef MICROPY_HW_SPI2_SCK
#define MICROPY_HW_SPI2_SCK (18)
#define MICROPY_HW_SPI2_MOSI (23)
#define MICROPY_HW_SPI2_MISO (19)
#if CONFIG_IDF_TARGET_ESP32
// ESP32 has IO_MUX pins for VSPI/SPI3 lines, use them as defaults
#define MICROPY_HW_SPI2_SCK VSPI_IOMUX_PIN_NUM_CLK // pin 18
#define MICROPY_HW_SPI2_MOSI VSPI_IOMUX_PIN_NUM_MOSI // pin 23
#define MICROPY_HW_SPI2_MISO VSPI_IOMUX_PIN_NUM_MISO // pin 19
#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
// ESP32S2 and S3 uses GPIO matrix for SPI3 pins, no IO_MUX possible
// Set defaults to the pins used by SPI2 in Octal mode
#define MICROPY_HW_SPI2_SCK (36)
#define MICROPY_HW_SPI2_MOSI (35)
#define MICROPY_HW_SPI2_MISO (37)
#endif
#endif
#define MP_HW_SPI_MAX_XFER_BYTES (4092)
@ -108,7 +117,9 @@ typedef struct _machine_hw_spi_obj_t {
// Default pin mappings for the hardware SPI instances
STATIC const machine_hw_spi_default_pins_t machine_hw_spi_default_pins[2] = {
{ .sck = MICROPY_HW_SPI1_SCK, .mosi = MICROPY_HW_SPI1_MOSI, .miso = MICROPY_HW_SPI1_MISO },
#ifdef MICROPY_HW_SPI2_SCK
{ .sck = MICROPY_HW_SPI2_SCK, .mosi = MICROPY_HW_SPI2_MOSI, .miso = MICROPY_HW_SPI2_MISO },
#endif
};
// Static objects mapping to HSPI and VSPI hardware peripherals