diff options
Diffstat (limited to 'fw')
| -rw-r--r-- | fw/main.c | 57 |
1 files changed, 45 insertions, 12 deletions
@@ -32,6 +32,11 @@ void strobe_leds(void) { GPIOA->BSRR = GPIO_BSRR_BR_9; } +#define SR_COMM 0x0002 +#define SR_ERROR 0x0004 +#define SR_ID 0x0008 +#define SR_ILED_HIGH 0x0080 +#define SR_ILED_LOW 0x0040 int main(void) { RCC->CR |= RCC_CR_HSEON; while (!(RCC->CR&RCC_CR_HSERDY)); @@ -77,27 +82,55 @@ int main(void) { SPI1->CR1 = SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE | SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_SPE | (0<<SPI_CR1_BR_Pos) | SPI_CR1_MSTR | SPI_CR1_CPOL | SPI_CR1_CPHA; int val = 0xffff; - GPIOA->BSRR = GPIO_BSRR_BR_6; + int aval = 0x0000; + GPIOA->BSRR = GPIO_BSRR_BR_6; /* OE */ int j = 0; - int bval = 0x4000; + int ctr = 0; + int q = 0; + int bval = 0x400; while (42) { for (int i=0; i<8; i++) { - spi_send(val); - spi_send(val); + spi_send(1<<(ctr&3)); + spi_send(1<<((ctr>>1)&3)); strobe_leds(); - spi_send(0x0200 | bval | (0xff^(1<<i))); + //spi_send(0x0200 | bval | (0xff^(1<<i))); + //spi_send((0xff^(1<<i))<<8); + //spi_send(SR_COMM | SR_ILED_HIGH | 0xff); + //spi_send(0x00ff ^ (1<<ctr) | (0x100<<ctr)); + spi_send(bval | (0xff00 ^ (0x100<<i))); strobe_aux(); for(int i=0; i<10; i++) tick(); - //j++; + j++; if (j == 1000) { j = 0; - if (bval == 0x4000) - bval = 0x8000; - else if (bval == 0x8000) - bval = 0x0000; - else - bval = 0x4000; + ctr++; + if (ctr == 8) { + ctr = 0; + q++; + if (q == 6) + q = 0; + } + switch (q) { + case 0: + bval = SR_COMM | SR_ILED_LOW; + break; + case 1: + bval = SR_ID | SR_ILED_LOW; + break; + case 2: + bval = SR_ERROR | SR_ILED_LOW; + break; + case 3: + bval = SR_COMM | SR_ILED_HIGH; + break; + case 4: + bval = SR_ID | SR_ILED_HIGH; + break; + case 5: + bval = SR_ERROR | SR_ILED_HIGH; + break; + } } } } |