From e91eceeb2d5a51f091d941c65f631e0565e0b908 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 8 Aug 2020 12:54:38 -0400
Subject: [PATCH] added i2cdetect test of i2c bus

---
 afsk/telem.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/afsk/telem.c b/afsk/telem.c
index 648cb041..c40c7001 100644
--- a/afsk/telem.c
+++ b/afsk/telem.c
@@ -125,8 +125,20 @@ struct SensorData read_sensor_data(struct SensorConfig sensor) {
 //struct SensorConfig config_sensor(int sensor, int milliAmps) {
 struct SensorConfig config_sensor(char *bus, int address,  int milliAmps) {
     struct SensorConfig data;
+    FILE *i2cdetect = popen("timeout 5 i2cdetect -y 0");
+    int error = pclose(i2cdetect)/256;
+    printf("i2cdetect 0 error: %d \n", error);
+
+    i2cdetect = popen("timeout 5 i2cdetect -y 1");
+    error = pclose(i2cdetect)/256;
+    printf("i2cdetect 1 error: %d \n", error);
+
+    i2cdetect = popen("timeout 5 i2cdetect -y 3");
+    error = pclose(i2cdetect)/256;
+    printf("i2cdetect 3 error: %d \n", error);
 	
-    if (access(bus, W_OK | R_OK) < 0)  {   // Test if I2C Bus is missing 
+    if (error != 0) 
+//    if (access(bus, W_OK | R_OK) < 0)  {   // Test if I2C Bus is missing 
 	    printf("ERROR: %s bus not present \n", bus);
 	    data.fd = OFF;
 	    return (data);