Add 8khz streaming to debug mode

git-svn-id: https://bucket.mit.edu/svn/nilm/zoom@6942 ddd99763-3ecb-0310-9145-efcb8ce7c51f

firmware/zoom.c

@@ -46,7 +46,7 @@ void TISR_HANDLER(5)
 	}
 
 	/* Update DAC.  Add whatever is necessary to cause the ADC
-	   to change by 150% towards the center of 0x0800
+	   to change by 150% towards the center of n0x0800
        (intentional overshoot to increase slew rate capability) */
 	adjustment = ((int32_t) v - 0x0800) * 1.50 * ADC_DAC_SCALING;
 	newdac = dac_cmd + adjustment;
@@ -61,6 +61,15 @@ void TISR_HANDLER(5)
 	}
 }
 
+void TISR_HANDLER(6)
+{
+	uint16_t v;
+	timer_clear_txif(6);
+	v = adc_get();
+	send_adc = v;
+	send_data = 1;
+}
+
 void send_to_pc(void)
 {
 	/* Sent data format:
@@ -112,6 +121,20 @@ void run_debug(void)
 		case '0':
 			dac = 32768;
 			break;
+		case 'g':
+			/* change baudrate */
+			/* read ADC at 8KHz */	
+			/* send DAC and ADC values to PC */
+			uart1_init(500000);
+			timer_setup_16bit(6, 8000, 1);
+			send_dac = dac;
+			for (;;) {
+				if (send_data) {
+					send_to_pc();
+					send_data = 0;
+				}
+			}
+			break;
 		}
 	}
 }