Added timeout for i2c_stop in LPC1114 target.

Author: matthewelse

libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX/i2c_api.c

@@ -125,13 +125,17 @@ inline int i2c_start(i2c_t *obj) {
 
 inline int i2c_stop(i2c_t *obj) {
     // write the stop bit
+	int timeout = 0;
     i2c_conset(obj, 0, 1, 0, 0);
     i2c_clear_SI(obj);
 
     // wait for STO bit to reset
-    while(I2C_CONSET(obj) & (1 << 4));
-	
-	return 0;
+    while(I2C_CONSET(obj) & (1 << 4)) {
+		timeout++;
+		if (timeout>100000) return 1;
+	}
+    
+    return 0;
 }
 
 
@@ -159,7 +163,7 @@ static inline int i2c_do_read(i2c_t *obj, int last) {
     i2c_clear_SI(obj);
 
     // wait for it to arrive
-    i2c_wait_SI(obj);
+    //i2c_wait_SI(obj);
 
     // return the data
     return (I2C_DAT(obj) & 0xFF);

workspace_tools/toolchains/arm.py

@@ -25,7 +25,7 @@ def __init__(self, target, options=None, notify=None):
 
         common = [join(ARM_BIN, "armcc"), "-c",
             "--cpu=%s" % cpu, "--gnu",
-            "-Ospace", "--split_sections", "--apcs=interwork",
+            "-O0", "--split_sections", "--apcs=interwork",
             "--brief_diagnostics", "--restrict"
         ]