stm32f1: Get boot loader working

[fw/altos] / src / stm32f1 / ao_arch_funcs.h

diff --git a/src/stm32f1/ao_arch_funcs.h b/src/stm32f1/ao_arch_funcs.h
index 35e9374fc66ffd9fdf79dfd15f05d030170f1387..502fb140b47cb1777ef126aad4378324073ec2e4 100644 (file)
--- a/src/stm32f1/ao_arch_funcs.h
+++ b/src/stm32f1/ao_arch_funcs.h
@@ -19,6 +19,16 @@
 #ifndef _AO_ARCH_FUNCS_H_
 #define _AO_ARCH_FUNCS_H_
 
+#define AO_EXTI_MODE_RISING    1
+#define AO_EXTI_MODE_FALLING   2
+#define AO_EXTI_MODE_PULL_NONE 0
+#define AO_EXTI_MODE_PULL_UP   4
+#define AO_EXTI_MODE_PULL_DOWN 8
+#define AO_EXTI_PRIORITY_LOW   16
+#define AO_EXTI_PRIORITY_MED   0
+#define AO_EXTI_PRIORITY_HIGH  32
+#define AO_EXTI_PIN_NOCONFIGURE        64
+
 static inline void
 ao_enable_port(struct stm_gpio *port)
 {
@@ -71,6 +81,29 @@ ao_enable_output(struct stm_gpio *port, int bit, uint8_t v)
                      STM_GPIO_CR_CNF_OUTPUT_PUSH_PULL);
 }
 
+static inline void
+ao_gpio_set_mode(struct stm_gpio *port, int bit, int mode)
+{
+       uint8_t cnf;
+
+       if (mode == AO_EXTI_MODE_PULL_NONE)
+               cnf = STM_GPIO_CR_CNF_INPUT_FLOATING;
+       else {
+               cnf = STM_GPIO_CR_CNF_INPUT_PULL;
+               ao_gpio_set(port, bit, mode == AO_EXTI_MODE_PULL_UP);
+       }
+       stm_gpio_conf(port, bit,
+                     STM_GPIO_CR_MODE_INPUT,
+                     cnf);
+}
+
+static inline void
+ao_enable_input(struct stm_gpio *port, int bit, int mode)
+{
+       ao_enable_port(port);
+       ao_gpio_set_mode(port, bit, mode);
+}
+
 #if USE_SERIAL_1_SW_FLOW || USE_SERIAL_2_SW_FLOW || USE_SERIAL_3_SW_FLOW
 #define HAS_SERIAL_SW_FLOW 1
 #else