From 38ae118526307908ab60ba00b5bc7b8d0260b057 Mon Sep 17 00:00:00 2001
From: Alan Johnston <alan.b.johnston@gmail.com>
Date: Sat, 6 Apr 2019 11:46:41 -0400
Subject: [PATCH] Arduino 4 register read and AX.25 hex packet export

---
 afsk/ax25.c |  8 +++++++-
 afsk/main.c | 23 ++++++++++++++++++-----
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/afsk/ax25.c b/afsk/ax25.c
index 15b127c2..d04e71eb 100644
--- a/afsk/ax25.c
+++ b/afsk/ax25.c
@@ -17,7 +17,7 @@
  *  You should have received a copy of the GNU General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
+#include <stdio.h>
 #include "ax25.h"
 #include <string.h>
 #include "ax5043.h"
@@ -89,6 +89,12 @@ int ax25_tx_frame(ax25_conf_t *hax25, ax5043_conf_t *hax,
     memcpy(__tx_buffer, hax25->addr_field, hax25->addr_field_len);
     memcpy(__tx_buffer + hax25->addr_field_len, payload, len);
 
+    printf("\n");
+    int jj;
+    for(jj = 0; jj < 256; jj++) {
+	printf("%x",__tx_buffer[jj]);
+    }
+    printf("\n");
     return ax5043_tx_frame(hax, __tx_buffer, len + hax25->addr_field_len,
             hax25->preamble_len, hax25->postable_len, 1000);
 }
diff --git a/afsk/main.c b/afsk/main.c
index 41c65c62..3b89e116 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -129,21 +129,34 @@ int main(void) {
     {
 	    fprintf(stderr,"ERROR: /dev/i2c-0 bus not present\n");    
     } else {    
-	arduinoI2C = wiringPiI2CSetupInterface("/dev/i2c-0", 0x4B);
+	arduinoI2C = wiringPiI2CSetupInterface("/dev/i2c-0", 0x4b);
  	fprintf(stderr,"arduinoI2C: %d\n", arduinoI2C);
           if (arduinoI2C > 0) {
-   //  	    for (blink = 1; blink < 20 ;blink++) {
+/*   //  	    for (blink = 1; blink < 20 ;blink++) {
        		 sleep(1);
     		fprintf(stderr,"Arduio: %d \n", wiringPiI2CReadReg16(arduinoI2C,0));
 		 sleep(1);
-    		fprintf(stderr,"Arduio: %d \n", wiringPiI2CRead(arduinoI2C));
-   	    	 sleep(1);
+  //  		fprintf(stderr,"Arduio: %d \n", wiringPiI2CRead(arduinoI2C));
+   //	    	 sleep(1);
     		printf("Arduio: %d \n", wiringPiI2CReadReg16(arduinoI2C,1));
        	 	sleep(1);
     		printf("Arduio: %d \n", wiringPiI2CReadReg16(arduinoI2C,2));
         	sleep(1);
 // 	   }
-         } else {
+*/
+        int reg;
+	int value;
+	for (reg = 0; reg < 4; reg++) {
+  	    usleep(100000); // wait 100ms for Arduino 
+	    value = wiringPiI2CReadReg16(arduinoI2C, reg);
+	    if (value < 0) {
+		fprintf(stderr,"Error reading from register %d on Arduino\n", reg);
+	    } else {
+  	        fprintf(stderr,"Read from register %d on Arduino value of %d\n", reg, value); 
+    	    }
+	}		  
+
+	} else {
 		fprintf(stderr,"Arduino payload not present\n");
        	}
   }