happy

1 files changed, 53 insertions, 0 deletions

diff --git a/stm32/app/pins.h b/stm32/app/pins.h
new file mode 100644
index 0000000..9ea01cf
--- /dev/null
+++ b/stm32/app/pins.h
@@ -0,0 +1,53 @@
+#ifndef _PINS_H_
+#define _PINS_H_
+
+/* st seem to change these with every chip revision */
+
+#define MAP_AF(a) do {   \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, a ); \
+  } while (0)
+
+/* STM32F1 doesn't have AF pull up, but also doesn't disconnect af inputs so just use regular pull up */
+#define MAP_AF_PU(a) do {    \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, a); \
+    gpio_set( a ## _PORT, a); \
+  } while (0)
+
+#define MAP_AF_OD(a) do {    \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, a ); \
+  } while (0)
+
+
+#define MAP_OUTPUT_PP(a)  do { \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, a ); \
+  } while (0)
+
+
+#define MAP_OUTPUT_OD(a)  do { \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_OPENDRAIN, a ); \
+  } while (0)
+
+
+/* STM32F1 madly uses the output register to drive the other end of the resistor, so pull up  */
+/* requires us to write a 1 there */
+
+#define MAP_INPUT_PU(a)   do { \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, a); \
+    gpio_set( a ## _PORT, a); \
+  } while (0)
+
+
+#define MAP_INPUT(a)  do { \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, a); \
+  } while (0)
+
+#define MAP_ANALOG(a) do { \
+    gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, a); \
+  } while (0)
+
+
+#define CLEAR(a) gpio_clear( a ## _PORT, a)
+#define SET(a) gpio_set( a ## _PORT, a)
+#define GET(a) gpio_get( a ## _PORT, a)
+
+#endif