diff options
| -rw-r--r-- | ports/esp32/machine_hw_spi.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/ports/esp32/machine_hw_spi.c b/ports/esp32/machine_hw_spi.c index 27afa60af..acdabcb2a 100644 --- a/ports/esp32/machine_hw_spi.c +++ b/ports/esp32/machine_hw_spi.c @@ -36,11 +36,31 @@ #include "driver/spi_master.h" -// Default pins for SPI(1), can be overridden by a board +// SPI mappings by device, naming used by IDF old/new +// upython | ESP32 | ESP32S2 | ESP32S3 | ESP32C3 +// ----------+-----------+-----------+---------+--------- +// SPI(id=1) | HSPI/SPI2 | FSPI/SPI2 | SPI2 | SPI2 +// SPI(id=2) | VSPI/SPI3 | HSPI/SPI3 | SPI3 | err + +// Default pins for SPI(id=1) aka IDF SPI2, can be overridden by a board #ifndef MICROPY_HW_SPI1_SCK -#define MICROPY_HW_SPI1_SCK (14) -#define MICROPY_HW_SPI1_MOSI (13) -#define MICROPY_HW_SPI1_MISO (12) +#ifdef SPI2_IOMUX_PIN_NUM_CLK +// Use IO_MUX pins by default. +// If SPI lines are routed to other pins through GPIO matrix +// routing adds some delay and lower limit applies to SPI clk freq +#define MICROPY_HW_SPI1_SCK SPI2_IOMUX_PIN_NUM_CLK // pin 14 on ESP32 +#define MICROPY_HW_SPI1_MOSI SPI2_IOMUX_PIN_NUM_MOSI // pin 13 on ESP32 +#define MICROPY_HW_SPI1_MISO SPI2_IOMUX_PIN_NUM_MISO // pin 12 on ESP32 +// Only for compatibility with IDF 4.2 and older +#elif CONFIG_IDF_TARGET_ESP32S2 +#define MICROPY_HW_SPI1_SCK FSPI_IOMUX_PIN_NUM_CLK +#define MICROPY_HW_SPI1_MOSI FSPI_IOMUX_PIN_NUM_MOSI +#define MICROPY_HW_SPI1_MISO FSPI_IOMUX_PIN_NUM_MISO +#else +#define MICROPY_HW_SPI1_SCK HSPI_IOMUX_PIN_NUM_CLK +#define MICROPY_HW_SPI1_MOSI HSPI_IOMUX_PIN_NUM_MOSI +#define MICROPY_HW_SPI1_MISO HSPI_IOMUX_PIN_NUM_MISO +#endif #endif // Default pins for SPI(2), can be overridden by a board |