diff options
Diffstat (limited to 'VexRiscvSocSoftware/projects/murax/wip/src/main.c')
-rwxr-xr-x | VexRiscvSocSoftware/projects/murax/wip/src/main.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/VexRiscvSocSoftware/projects/murax/wip/src/main.c b/VexRiscvSocSoftware/projects/murax/wip/src/main.c new file mode 100755 index 0000000..2d92b76 --- /dev/null +++ b/VexRiscvSocSoftware/projects/murax/wip/src/main.c @@ -0,0 +1,58 @@ +#include <stdint.h> +#include <murax.h> + +/* bss section */ +uint32_t a, b, c; + +/* ctor section */ +void __attribute__ ((constructor)) defaultConstructor() +{ + c += 3; +} + +/* text section */ +void main() +{ + uint32_t result; + + interruptCtrl_init(TIMER_INTERRUPT); + prescaler_init(TIMER_PRESCALER); + timer_init(TIMER_A); + + TIMER_PRESCALER->LIMIT = 12000-1; //1 ms rate + + TIMER_A->LIMIT = 1000-1; //1 second rate + TIMER_A->CLEARS_TICKS = 0x00010002; + + TIMER_INTERRUPT->PENDINGS = 0xF; + TIMER_INTERRUPT->MASKS = 0x1; + + GPIO_A->OUTPUT_ENABLE = 0x000000FF; + GPIO_A->OUTPUT = 0x00000000; + + UART->STATUS = 2; //Enable RX interrupts + UART->DATA = 'A'; + + result = 0; + a = 1, b = 2; + while(1){ + result += a; + result += b + c; + for(uint32_t idx = 0;idx < 50000;idx++) asm volatile(""); + GPIO_A->OUTPUT = (GPIO_A->OUTPUT & ~0x3F) | ((GPIO_A->OUTPUT + 1) & 0x3F); //Counter on LED[5:0] + } +} + +void irqCallback() +{ + if(TIMER_INTERRUPT->PENDINGS & 1){ //Timer A interrupt + GPIO_A->OUTPUT ^= 0x80; //Toogle led 7 + TIMER_INTERRUPT->PENDINGS = 1; + } + while(UART->STATUS & (1 << 9)){ //UART RX interrupt + UART->DATA = (UART->DATA) & 0xFF; + } +} + + + |