stm32f4: Only enable peripherals once

Add is_enabled_pclock() and only initialize spi and adc once during configuration. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-07-28 17:55:57 -04:00
parent ef0784afe6
commit bc9c8cd7a0
4 changed files with 35 additions and 13 deletions
--- a/src/stm32f4/internal.h
+++ b/src/stm32f4/internal.h
@@ -14,6 +14,7 @@
 #define GPIO_ANALOG 3

 void enable_pclock(uint32_t periph_base);
+int is_enabled_pclock(uint32_t periph_base);
 uint32_t get_pclock_frequency(uint32_t periph_base);
 void clock_setup(void);
 void gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup);