diff options
Diffstat (limited to 'olsndot/firmware')
| -rw-r--r-- | olsndot/firmware/main.c | 111 |
1 files changed, 101 insertions, 10 deletions
diff --git a/olsndot/firmware/main.c b/olsndot/firmware/main.c index 4e26200..e4b3935 100644 --- a/olsndot/firmware/main.c +++ b/olsndot/firmware/main.c @@ -7,6 +7,11 @@ * Part number: STM32F030F4C6 */ +#define NBITS 12 +void do_transpose(void); +uint32_t brightness[8]; +volatile uint8_t brightness_by_bit[NBITS]; + int main(void) { RCC->CR |= RCC_CR_HSEON; while (!(RCC->CR&RCC_CR_HSERDY)); @@ -74,7 +79,7 @@ int main(void) { TIM1->SMCR = 0; TIM1->DIER = 0; - TIM1->PSC = 4; // debug + TIM1->PSC = 1; // debug /* CH2 - clear/!MR, CH3 - strobe/STCP */ TIM1->CCR2 = 1; TIM1->RCR = 0; @@ -92,16 +97,100 @@ int main(void) { TIM1->EGR |= TIM_EGR_UG; - for (;;) { - GPIOA->ODR ^= GPIO_ODR_6; - LL_mDelay(1); + while (42) { + /* + for (uint8_t i=0; i<8; i++) { + brightness[1] = brightness[5] = i; + brightness[2] = brightness[6] = 0; + brightness[3] = brightness[7] = 0; + do_transpose(); + LL_mDelay(500); + } + for (uint8_t i=0; i<8; i++) { + brightness[1] = brightness[5] = 0; + brightness[2] = brightness[6] = i; + brightness[3] = brightness[7] = 0; + do_transpose(); + LL_mDelay(500); + } + for (uint8_t i=0; i<8; i++) { + brightness[1] = brightness[5] = 0; + brightness[2] = brightness[6] = 0; + brightness[3] = brightness[7] = i; + do_transpose(); + LL_mDelay(500); + } + for (uint8_t i=0; i<8; i++) { + brightness[1] = brightness[5] = i; + brightness[2] = brightness[6] = i; + brightness[3] = brightness[7] = i; + do_transpose(); + LL_mDelay(500); + } + } + { + */ + for (uint32_t i=0; i<6; i++) { + for (uint32_t j=0; j<(1<<NBITS); j++) { + GPIOA->ODR ^= GPIO_ODR_6; + switch (i) { + case 0: + brightness[1] = brightness[5] = (1<<NBITS)-1; + brightness[2] = brightness[6] = 0; + brightness[3] = brightness[7] = j; + break; + case 1: + brightness[1] = brightness[5] = (1<<NBITS)-1-j; + brightness[2] = brightness[6] = 0; + brightness[3] = brightness[7] = (1<<NBITS)-1; + break; + case 2: + brightness[1] = brightness[5] = 0; + brightness[2] = brightness[6] = j; + brightness[3] = brightness[7] = (1<<NBITS)-1; + break; + case 3: + brightness[1] = brightness[5] = 0; + brightness[2] = brightness[6] = (1<<NBITS)-1; + brightness[3] = brightness[7] = (1<<NBITS)-1-j; + break; + case 4: + brightness[1] = brightness[5] = j; + brightness[2] = brightness[6] = (1<<NBITS)-1; + brightness[3] = brightness[7] = 0; + break; + case 5: + brightness[1] = brightness[5] = (1<<NBITS)-1; + brightness[2] = brightness[6] = (1<<NBITS)-1-j; + brightness[3] = brightness[7] = 0; + break; + } + do_transpose(); + LL_mDelay(1); + } + } } } -#define NBITS 4 -uint8_t brightness_by_bit[NBITS] = { - 0x11, 0x22, 0x44, 0x88 -}; +uint32_t brightness[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; +volatile uint8_t brightness_by_bit[NBITS] = { 0 }; + +void do_transpose(void) { + for (uint32_t i=0; i<NBITS; i++) { + uint8_t bv = 0; + uint32_t mask = 1<<i; + for (uint32_t j=0; j<8; j++) { + if (brightness[j] & mask) + bv |= 1<<j; + } + brightness_by_bit[i] = bv; + } +} + +/* + * 460ns + * 720ns + */ /* * 1.00us @@ -115,12 +204,14 @@ uint8_t brightness_by_bit[NBITS] = { */ void TIM1_BRK_UP_TRG_COM_IRQHandler(void) { static uint32_t idx = 0; - idx = (idx+1)&7; + idx++; + if (idx >= NBITS) + idx = 0; GPIOA->ODR ^= GPIO_ODR_4; TIM1->CCMR1 = (4<<TIM_CCMR1_OC2M_Pos); // | TIM_CCMR1_OC2PE; - SPI1->DR = 0x88<<8; + SPI1->DR = brightness_by_bit[idx]<<8; while (SPI1->SR & SPI_SR_BSY); const uint32_t period_base = 4; /* 1us */ |