Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/spi_api.c

Revision:

201:fa203361dc70

Parent:

181:a4cbdfbbd2f4

Child:

210:45934c3d812a

--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/spi_api.c	Tue May 20 16:45:06 2014 +0100
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/spi_api.c	Wed May 21 10:30:07 2014 +0100
@@ -142,8 +142,24 @@
 }
 
 void spi_free(spi_t *obj) {
-    SpiHandle.Instance = (SPI_TypeDef *)(obj->spi);
-    HAL_SPI_DeInit(&SpiHandle);
+    // Reset SPI and disable clock
+    if (obj->spi == SPI_1) {
+        __SPI1_FORCE_RESET();
+        __SPI1_RELEASE_RESET();
+        __SPI1_CLK_DISABLE();
+    }
+
+    if (obj->spi == SPI_2) {
+        __SPI2_FORCE_RESET();
+        __SPI2_RELEASE_RESET();
+        __SPI2_CLK_DISABLE();
+    }
+
+    // Configure GPIO
+    pin_function(obj->pin_miso, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+    pin_function(obj->pin_mosi, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+    pin_function(obj->pin_sclk, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
+    pin_function(obj->pin_ssel, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
 }
 
 void spi_format(spi_t *obj, int bits, int mode, int slave) {