#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
#include "pru_uart.h"
#include "pru_ecap.h"
#include "sys_gpio.h"

// define some r30 bits
#define CW  (1 << 3)
#define CCW (1 << 7)
#define delay_us(n) __delay_cycles((n) * 200u)
#define delay_ms(n) delay_us((n) * 1000u)

struct Message {
    uint32_t test_message;
};

// layout of shared ddr3 memory (filled in by loader)
struct DDRLayout {
        Message volatile *msgbuf;
        uint16_t num_msgs;
        uint16_t msg_size;
};

struct UserControlVars {
        uint16_t pru0_counter;
        uint16_t pru1_counter;
    uint32_t shared_counter;
};

far struct DDRLayout ddr __attribute__((location(0x10000))) = {};
far struct UserControlVars volatile shmem __attribute__((location(0x10100))) = {};

void main() {

    while(1){
        shmem.pru1_counter++;
        delay_ms(633);
        shmem.shared_counter++;
    }

}