diff options
| author | Keith Packard <keithp@keithp.com> | 2013-02-24 00:18:14 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-03-10 18:05:49 -0700 |
| commit | 5187bb4402874f654fcef5ffdf237edf97a26b8c (patch) | |
| tree | b8befdce30b39cff603ac6701578581fb876f738 /src/stm/ao_arch_funcs.h | |
| parent | 90ee11542b111befa0e96e27292dc548e5c37396 (diff) | |
Add STM self-flashing loader
This allows the real application to get loaded at 0x2000 and jumps to
that at startup time if the boot pin is set appropriately
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm/ao_arch_funcs.h')
| -rw-r--r-- | src/stm/ao_arch_funcs.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h index d1779307..a45b6ab3 100644 --- a/src/stm/ao_arch_funcs.h +++ b/src/stm/ao_arch_funcs.h @@ -113,6 +113,19 @@ ao_spi_init(void); stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOEEN); \ } while (0) +#define ao_disable_port(port) do { \ + if ((port) == &stm_gpioa) \ + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOAEN); \ + else if ((port) == &stm_gpiob) \ + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOBEN); \ + else if ((port) == &stm_gpioc) \ + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOCEN); \ + else if ((port) == &stm_gpiod) \ + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIODEN); \ + else if ((port) == &stm_gpioe) \ + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOEEN); \ + } while (0) + #define ao_gpio_set(port, bit, pin, v) stm_gpio_set(port, bit, v) @@ -124,9 +137,7 @@ ao_spi_init(void); stm_moder_set(port, bit, STM_MODER_OUTPUT);\ } while (0) -#define ao_enable_input(port,bit,mode) do { \ - ao_enable_port(port); \ - stm_moder_set(port, bit, STM_MODER_INPUT); \ +#define ao_gpio_set_mode(port,bit,mode) do { \ if (mode == AO_EXTI_MODE_PULL_UP) \ stm_pupdr_set(port, bit, STM_PUPDR_PULL_UP); \ else if (mode == AO_EXTI_MODE_PULL_DOWN) \ @@ -134,6 +145,12 @@ ao_spi_init(void); else \ stm_pupdr_set(port, bit, STM_PUPDR_NONE); \ } while (0) + +#define ao_enable_input(port,bit,mode) do { \ + ao_enable_port(port); \ + stm_moder_set(port, bit, STM_MODER_INPUT); \ + ao_gpio_set_mode(port, bit, mode); \ + } while (0) #define ao_enable_cs(port,bit) do { \ stm_gpio_set((port), bit, 1); \ |