Update dx_i2c.c (#31)

if i2c binding already open then don't try to reopen
Azure-Sphere-DevX · Oct 20, 2021 · d8157fa · d8157fa
1 parent d89a5c2
commit d8157fa
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/dx_i2c.c b/src/dx_i2c.c
@@ -2,6 +2,10 @@
 
 bool dx_i2cOpen(DX_I2C_BINDING *i2c_binding)
 {
+    if (i2c_binding->opened) {
+        return true;
+    }
+
     i2c_binding->fd = I2CMaster_Open(i2c_binding->interfaceId);
     if (i2c_binding->fd < 0) {
         Log_Debug("ERROR: I2CMaster_Open: errno=%d (%s)\n", errno, strerror(errno));