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esp32/machine_hw_spi: Check for valid SPI id in constructor, not init. 

Otherwise constructing an invalid SPI instance (eg machine.SPI(3)) will
mess up machine.SPI(2)'s state before it's detected that it's an invalid
SPI id.

Signed-off-by: Damien George <damien@micropython.org>
pull/12086/head
Damien George 2023-07-25 11:33:51 +10:00
rodzic 162dd022b1
commit b2adfc8077
1 zmienionych plików z 16 dodań i 16 usunięć
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32
ports/esp32/machine_hw_spi.c
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@ -44,6 +44,13 @@
// SPI(id=1) | HSPI/SPI2 | FSPI/SPI2 | SPI2 | SPI2
// SPI(id=2) | VSPI/SPI3 | HSPI/SPI3 | SPI3 | err
// Number of available hardware SPI peripherals.
#if SOC_SPI_PERIPH_NUM > 2
#define MICROPY_HW_SPI_MAX (2)
#else
#define MICROPY_HW_SPI_MAX (1)
#endif
// Default pins for SPI(id=1) aka IDF SPI2, can be overridden by a board
#ifndef MICROPY_HW_SPI1_SCK
// Use IO_MUX pins by default.
@ -99,15 +106,15 @@ typedef struct _machine_hw_spi_obj_t {
} 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] = {
STATIC const machine_hw_spi_default_pins_t machine_hw_spi_default_pins[MICROPY_HW_SPI_MAX] = {
{ .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 SPI2 and SPI3 hardware peripherals
STATIC machine_hw_spi_obj_t machine_hw_spi_obj[2];
// Static objects mapping to SPI2 (and SPI3 if available) hardware peripherals.
STATIC machine_hw_spi_obj_t machine_hw_spi_obj[MICROPY_HW_SPI_MAX];
STATIC void machine_hw_spi_deinit_internal(machine_hw_spi_obj_t *self) {
switch (spi_bus_remove_device(self->spi)) {
@ -210,14 +217,6 @@ STATIC void machine_hw_spi_init_internal(
changed = true;
}
if (self->host != SPI2_HOST
#if SOC_SPI_PERIPH_NUM > 2
&& self->host != SPI3_HOST
#endif
) {
mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("SPI(%d) doesn't exist"), self->host);
}
if (changed) {
if (self->state == MACHINE_HW_SPI_STATE_INIT) {
self->state = MACHINE_HW_SPI_STATE_DEINIT;
@ -464,13 +463,14 @@ mp_obj_t machine_hw_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_
machine_hw_spi_obj_t *self;
const machine_hw_spi_default_pins_t *default_pins;
if (args[ARG_id].u_int == 1) { // SPI2_HOST which is FSPI_HOST on ESP32Sx, SPI2_HOST on others
self = &machine_hw_spi_obj[0];
default_pins = &machine_hw_spi_default_pins[0];
mp_int_t spi_id = args[ARG_id].u_int;
if (1 <= spi_id && spi_id <= MICROPY_HW_SPI_MAX) {
self = &machine_hw_spi_obj[spi_id - 1];
default_pins = &machine_hw_spi_default_pins[spi_id - 1];
} else {
self = &machine_hw_spi_obj[1];
default_pins = &machine_hw_spi_default_pins[1];
mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("SPI(%d) doesn't exist"), spi_id);
}
self->base.type = &machine_spi_type;
int8_t sck, mosi, miso;