From e3736acebadcff363afc37788c86266b703d9153 Mon Sep 17 00:00:00 2001
From: Gordon Williams <gw@pur3.co.uk>
Date: Thu, 25 Jan 2024 11:51:44 +0000
Subject: [PATCH] fix build warning, if jswrap_i2c_readReg called on an
undefined parent it could return an undefined value
---
src/jswrap_spi_i2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/jswrap_spi_i2c.c b/src/jswrap_spi_i2c.c
index 1f0beed534..3f6a3387d1 100644
--- a/src/jswrap_spi_i2c.c
+++ b/src/jswrap_spi_i2c.c
@@ -761,10 +761,10 @@ I2C.readReg = function(address, reg, quantity) {
```
*/
JsVar *jswrap_i2c_readReg(JsVar *parent, int address, int reg, int nBytes) {
- if (!jsvIsObject(parent)) return;
+ if (!jsvIsObject(parent)) return 0;
IOEventFlags device = jsiGetDeviceFromClass(parent);
bool sendStop = false;
unsigned char i2cReg = (unsigned char)reg;
_jswrap_i2c_writeTo(parent, device, address, sendStop, 1, &i2cReg);
return _jswrap_i2c_readFrom(parent, device, address, sendStop, nBytes);
-}
\ No newline at end of file
+}