#define SW_BTN  GPIOB, GPIO_Pin_3

#define SW_UP   GPIOB, GPIO_Pin_4

#define SW_DOWN GPIOB, GPIO_Pin_6

#define SW_LEFT GPIOB, GPIO_Pin_5

#define SW_RIGHT GPIOB, GPIO_Pin_7

#endif

            itoa(ssr_output, tempstr);

            ssd1306_DrawString("#=", 2, 45);

            ssd1306_DrawString("    ", 2, 57);

            ssd1306_DrawString(tempstr, 2, 57);

            GPIO_SetBits(LED_STAT);

            last_ssr_on = ticks;

        }

    }

    // Kill SSR after elapsed period less than SSR_PERIOD 

    if(ticks - last_ssr_on > ssr_output)

    {

        GPIO_ResetBits(LED_STAT);

    }

}

void draw_setpoint() {

    char tempstr[3];

    itoa_fp(temp, temp_frac, tempstr);