Fix I2C slave issue: return correct size

fpistm · fpistm · commit 835387eb8306 · 2018-02-02T10:20:38.000+01:00
Fix stm32duino#212 Signed-off-by: Frederic.Pillon <frederic.pillon@st.com>
diff --git a/cores/arduino/stm32/twi.c b/cores/arduino/stm32/twi.c
@@ -539,7 +539,7 @@ void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c)
 
   if((obj->i2c_onSlaveReceive != NULL) &&
     (obj->slaveMode == SLAVE_MODE_RECEIVE)) {
-    nbData = I2C_TXRX_BUFFER_SIZE - obj->handle.XferCount;
+    nbData = I2C_TXRX_BUFFER_SIZE - obj->handle.XferSize;
     if(nbData != 0) {
       obj->i2c_onSlaveReceive(obj->i2cTxRxBuffer, nbData);
     }

Original file line number	Diff line number	Diff line change
`@@ -539,7 +539,7 @@ void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c)`
`539`	`539`
`540`	`540`	`if((obj->i2c_onSlaveReceive != NULL) &&`
`541`	`541`	`(obj->slaveMode == SLAVE_MODE_RECEIVE)) {`
`542`		`- nbData = I2C_TXRX_BUFFER_SIZE - obj->handle.XferCount;`
	`542`	`+ nbData = I2C_TXRX_BUFFER_SIZE - obj->handle.XferSize;`
`543`	`543`	`if(nbData != 0) {`
`544`	`544`	`obj->i2c_onSlaveReceive(obj->i2cTxRxBuffer, nbData);`
`545`	`545`	`}`