From: Andy Spencer <andy753421@gmail.com>
Date: Tue, 11 Feb 2014 01:09:24 +0000 (+0000)
Subject: Add A2D signaling
X-Git-Url: http://pileus.org/git/?p=~andy%2Fcsm213a-hw;a=commitdiff_plain;h=aab601d3ceac5f1a8649f1eab285744373bdd8c8

Add A2D signaling
---

diff --git a/yue/main.cpp b/yue/main.cpp
index 0fdb866..e580188 100644
--- a/yue/main.cpp
+++ b/yue/main.cpp
@@ -15,9 +15,9 @@
          (x) > (max) ? (max) : (x))
 
 #define MMA8451_I2C_ADDRESS (0x1d<<1)   // acc sensor address
-#define TIME_ACCURACY     0.01
+#define TIME_ACCURACY     0.001
 
-#define ACC_SNS_DEFAULT   0.1   // default collecting interval in seconds
+#define ACC_SNS_DEFAULT   0.01 // default collecting interval in seconds
 #define MAG_SNS_DEFAULT   0.1
 #define LGT_SNS_DEFAULT   0.1
 #define TCH_SNS_DEFAULT   0.1
@@ -89,6 +89,8 @@ TSISensor  tchSensor;
 AnalogIn   lgtSensor(PTE22);
 AnalogIn   a2dSensor(A0);
 
+AnalogOut  a2dOutput(PTE30);
+
 DigitalOut led1(LED1);
 DigitalOut led2(LED2);
 
@@ -104,11 +106,11 @@ float lgtTmr = LGT_SNS_DEFAULT;
 float a2dTmr = A2D_SNS_DEFAULT;
 float ledTmr = LED_OUT_DEFAULT;
 
-bool accEnable = true;
+bool accEnable = false;
 bool magEnable = false;
 bool lgtEnable = false;
 bool tchEnable = false;
-bool a2dEnable = false;
+bool a2dEnable = true;
 bool ledEnable = true;
 
 bool useStr = false;
@@ -218,6 +220,9 @@ void clock1_interrupt(void){
     a2dCnt++;
     ledCnt++;
 
+    // Write A2D output sine wave
+    a2dOutput.write(sin(a2dCnt * TIME_ACCURACY * (2*PI) * 0.1));
+
     // Send data through Serial
     if (accEnable && (accCnt<0 || accCnt>=accTmr/TIME_ACCURACY)){
         sendAccInfo();
@@ -362,7 +367,7 @@ void sendTchInfo(void){
 
 void sendA2dInfo(void){
     float a2dData[6];
-    a2dData[0] = 0;
+    a2dData[0] = a2dSensor.read();
     a2dData[1] = 0;
     a2dData[2] = 0;
     a2dData[3] = 0;