diff options
Diffstat (limited to 'driver_fw/main.c')
| -rw-r--r-- | driver_fw/main.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/driver_fw/main.c b/driver_fw/main.c index accb159..838ca9d 100644 --- a/driver_fw/main.c +++ b/driver_fw/main.c @@ -82,40 +82,52 @@ int main(void) { uint8_t txbuf[128]; int txpos = -1; /* FIXME test code */ - for (int i=0; i<sizeof(txbuf); i++) + for (int i=0; i<sizeof(txbuf)/sizeof(txbuf[0]); i++) txbuf[i] = i; /* FIXME end test code */ while (42) { if (txstate.next_symbol == -NO_SYMBOL) { - txstate.next_symbol = xfr_8b10b_encode(&txstate.st, K28_1); - //if (txpos == -1) - // txstate.next_symbol = xfr_8b10b_encode(&txstate.st, K28_1); - //else - // txstate.next_symbol = xfr_8b10b_encode(&txstate.st, txbuf[txpos]); + if (txpos == -1) + txstate.next_symbol = xfr_8b10b_encode(&txstate.st, -K28_1); + else + txstate.next_symbol = xfr_8b10b_encode(&txstate.st, txbuf[txpos]); txpos++; - if (txpos == sizeof(txbuf)) + if (txpos >= sizeof(txbuf)/sizeof(txbuf[0])) txpos = -1; } } } -void TIM1_UP_IRQHandler() { - // FIXME debug code - static int debug_bit = 0; - debug_bit = !debug_bit; +int flipbits(int in) { + return + (in&0x200)>>9 | + (in&0x100)>>7 | + (in&0x080)>>5 | + (in&0x040)>>3 | + (in&0x020)>>1 | + (in&0x010)<<1 | + (in&0x008)<<3 | + (in&0x004)<<5 | + (in&0x002)<<7 | + (in&0x001)<<9; + +} +void TIM1_UP_IRQHandler() { TIM1->SR &= ~TIM_SR_UIF; int sym = txstate.current_symbol; int bit = sym&1; sym >>= 1; if (sym == 1) { /* last bit shifted out */ - sym = txstate.next_symbol | 1<<10; + if (txstate.next_symbol == -NO_SYMBOL) /*FIXME debug code*/ + asm volatile("bkpt"); + sym = flipbits(txstate.next_symbol) | 1<<10; txstate.next_symbol = -NO_SYMBOL; } txstate.current_symbol = sym; - TIM1->CCR1 = debug_bit ? 0xffff : 0x0000; + TIM1->CCR1 = bit ? 0xffff : 0x0000; } void NMI_Handler(void) { |