stm32/spi: Add spi_deinit_all function.

SPI objects can remain active after a soft-reboot because they are
statically allocated and lack a finalizer to collect and deinitialize them.
This commit adds a `spi_deinit_all()` functions for SPI, similar to other
peripherals such as UART, DAC, etc.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/ports/stm32/spi.c b/ports/stm32/spi.c
index 607b3fe68..aa459119c 100644
--- a/ports/stm32/spi.c
+++ b/ports/stm32/spi.c
@@ -545,6 +545,15 @@ void spi_deinit(const spi_t *spi_obj) {
     }
 }
 
+void spi_deinit_all(void) {
+    for (int i = 0; i < MP_ARRAY_SIZE(spi_obj); i++) {
+        const spi_t *spi = &spi_obj[i];
+        if (spi->spi != NULL) {
+            spi_deinit(spi);
+        }
+    }
+}
+
 static HAL_StatusTypeDef spi_wait_dma_finished(const spi_t *spi, uint32_t t_start, uint32_t timeout) {
     volatile HAL_SPI_StateTypeDef *state = &spi->spi->State;
     for (;;) {