diff options
Diffstat (limited to 'wirish/boards/st_stm32f401cdiscovery')
| -rw-r--r-- | wirish/boards/st_stm32f401cdiscovery/include/board/board.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/wirish/boards/st_stm32f401cdiscovery/include/board/board.h b/wirish/boards/st_stm32f401cdiscovery/include/board/board.h index 3d4b44c..a30bd3c 100644 --- a/wirish/boards/st_stm32f401cdiscovery/include/board/board.h +++ b/wirish/boards/st_stm32f401cdiscovery/include/board/board.h @@ -36,11 +36,29 @@ /* 84 MHz -> 84 cycles per microsecond. */ #define CYCLES_PER_MICROSECOND 84 -/* Pin number for the built-in button. */ -#define BOARD_BUTTON_PIN 0 - -/* Pin number for the built-in LED. */ -#define BOARD_LED_PIN 63 +// PLL config for 8 MHz external crystal +// --> 84 MHz SYSCLK, with 48 MHz PLL48CK. +// +// Additional constraints: +// ASSERT_FAULT((data->pllq >= 4) && (data->pllq <= 15)); +// ASSERT_FAULT((data->pllp >= 2) && (data->pllp <= 8)); +// ASSERT_FAULT(!(data->pllp & 1)); +// ASSERT_FAULT((data->plln >= 192) && (data->plln <= 432)); +// ASSERT_FAULT((data->pllm >= 2) && (data->pllm <= 63)); +// +// f_VCO = (INPUT) X (PLL_N / PLL_M) +#define BOARD_PLL_N 336 +#define BOARD_PLL_M 8 +// SYSCLK = f_PLL = f_VCO / PLL_P; PLL_P = {2, 4, 6, 8} +#define BOARD_PLL_P 4 +// PLL48CK = f_USBETC = f_VCO / PLL_Q; 2 <= PLL_Q <= 15 +#define BOARD_PLL_Q 7 // should be 2? + +/* Pin number for the built-in button (USER button on STM32F401DISCOVERY) */ +#define BOARD_BUTTON_PIN PA0 + +/* Pin number for the built-in LED (blue LED on STM32F401DISCOVERY) */ +#define BOARD_LED_PIN PD15 /* Number of USARTs/UARTs whose pins are broken out to headers. */ #define BOARD_NR_USARTS 3 @@ -50,6 +68,10 @@ #define BOARD_USART1_RX_PIN 10 #define BOARD_USART2_TX_PIN 2 #define BOARD_USART2_RX_PIN 3 +/* FIXME: +#define BOARD_USART3_TX_PIN -1 +#define BOARD_USART3_RX_PIN -1 +*/ /* Number of SPI ports broken out to headers. */ #define BOARD_NR_SPI 2 |