Rohm / RegisterWriter

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   kionix-kx123-hello rohm-bh1790glc-hello simple-sensor-client rohm-SensorShield-example

Fork of rohm-sensor-hal by Rohm

Diff: source/RegisterWriter.cpp

Revision:
14:f33e0914ea36
Parent:
13:3d4508874121
diff -r 3d4508874121 -r f33e0914ea36 source/RegisterWriter.cpp
--- a/source/RegisterWriter.cpp	Fri Jun 16 11:54:33 2017 +0000
+++ b/source/RegisterWriter.cpp	Mon Feb 18 14:26:35 2019 +0900
@@ -28,7 +28,7 @@
 #include "../RegisterWriter/RegisterWriter.h"          //prototypes
 #define I2C_WRITE 0
 #define I2C_READ  1
-
+#define MAX_DATA_LENGTH 6
 
 RegisterWriter::RegisterWriter(I2C &i2c_obj) : i2c_bus(i2c_obj) {
     self_created_i2c = false;
@@ -88,7 +88,10 @@
 bool RegisterWriter::write_register_single(uint8_t sad, uint8_t reg, uint8_t* data, uint8_t data_len) {
     bool error;
 
-    char cmd[data_len+1];
+    char cmd[MAX_DATA_LENGTH+1];  // assume max value of data_len is 6
+    if (data_len>MAX_DATA_LENGTH) {
+    	return false;
+    }
 
     cmd[0] = reg;
     for (int i = 0; i < data_len; i++) {