diff options
Diffstat (limited to 'fw')
| -rw-r--r-- | fw/base.c | 4 | ||||
| -rw-r--r-- | fw/main.c | 43 |
2 files changed, 45 insertions, 2 deletions
@@ -1,5 +1,6 @@ #include <unistd.h> +#include <stdbool.h> int __errno = 0; void *_impure_ptr = NULL; @@ -19,3 +20,6 @@ size_t strlen(const char *s) { while (*s++); return s - start - 1; } + +void __assert_func(bool value) { +} @@ -38,8 +38,8 @@ int main(void) { RCC->APB1ENR |= RCC_APB1ENR_TIM3EN; GPIOA->MODER |= - (3<<GPIO_MODER_MODER0_Pos) /* PA0 - Vmeas_A */ - | (3<<GPIO_MODER_MODER1_Pos) /* PA1 - Vmeas_B */ + (0<<GPIO_MODER_MODER0_Pos) /* PA0 - Vmeas_A */ + | (0<<GPIO_MODER_MODER1_Pos) /* PA1 - Vmeas_B */ | (1<<GPIO_MODER_MODER2_Pos) /* PA2 - LOAD */ | (1<<GPIO_MODER_MODER3_Pos) /* PA3 - CH0 */ | (1<<GPIO_MODER_MODER4_Pos) /* PA4 - CH3 */ @@ -64,8 +64,44 @@ int main(void) { GPIOA->ODR &= ~(!a<<3 | !b<<7 | c<<6 | d<<4); GPIOA->ODR |= a<<3 | b<<7 | !c<<6 | !d<<4; } + set_outputs(0); + + uint8_t out_state = 0x01; +#define DEBOUNCE 100 + int debounce_ctr = 0; + int val_last = 0; + int ctr = 0; +#define RESET 1000 + int reset_ctr = 0; while (42) { #define FOO 500000 + if (reset_ctr) + reset_ctr--; + else + set_outputs(0); + + if (debounce_ctr) { + debounce_ctr--; + } else { + int val = !!(GPIOA->IDR & 1); + debounce_ctr = DEBOUNCE; + + if (val != val_last) { + if (val) + set_outputs(out_state & 0xf); + else + set_outputs(out_state >> 4); + reset_ctr = RESET; + val_last = val; + ctr++; + + if (ctr == 100) { + ctr = 0; + out_state = out_state<<1 | out_state>>7; + } + } + } + /* for (int i=0; i<FOO; i++) ; set_outputs(0x1); for (int i=0; i<FOO; i++) ; @@ -74,6 +110,9 @@ int main(void) { set_outputs(0x4); for (int i=0; i<FOO; i++) ; set_outputs(0x8); + */ + //for (int i=0; i<8*FOO; i++) ; + //GPIOA->ODR ^= 4; } } |