RX72N Envision KitとMH-Z19Bで二酸化炭素濃度を測定する

SCI7.BRR = 0x67;                  //N=((32*10^6)/(64*2^(-1)*9600))-1 = 103.16..(dec)

int main(void) {

    int i;
    char c;
    int co2_raw, temp_data;
    uint8_t Gas_Concentration[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79};
    uint8_t Return_Value[9];

    //System Init
    SYSTEM.PRCR.WORD = 0xA503;              //PRC1,0 Write Enable
    clk_init();

    //SCI Init
    serial_init();
    serial_pmod2_init();

    ee_printf("START\n");

    while(1) {
        //Command Send
        for (i=0;i<9;i++) {
            while(SCI7.SSR.BIT.TDRE == 0);
            SCI7.TDR = Gas_Concentration[i];
            while(SCI7.SSR.BIT.TEND == 0);
        }
        for (i=0;i<10;i++) {}

        //Get Return Value
        for (i=0;i<9;i++) {
            while(SCI7.SSR.BIT.RDRF == 0);
            Return_Value[i] = SCI7.RDR;
        }
        co2_raw = (int)((Return_Value[2] << 8) | Return_Value[3]);
        temp_data = (int)(Return_Value[4]) - 40;
        ee_printf("Return_Value: ");
        for (i=0;i<9;i++) {
            //ee_printf("Return_Value[%d],0x%x\n",i, Return_Value[i]);
            ee_printf("0x%x,", Return_Value[i]);
        }
        ee_printf("\n");
        //ee_printf("CO2:%d[ppm], Ta:%d[C]\n",co2_raw, temp_data);
        ee_printf("CO2:%d[ppm]\n\n",co2_raw);               //温度データは気温というよりも内部の補正用なので、表示はしない

        //wait
        for (i=0;i<5000000;i++) {}  //(temp)
        for (i=0;i<5000000;i++) {}  //(temp)
        for (i=0;i<5000000;i++) {}  //(temp)
    }

return 0;
}