STM32H7: increase i2c slave rx limit.

Use uint16_t variables for i2c slave_rx_buffer_size and slave_rx_count variables. This allows to receive more than 255 bytes in slave mode. The bytes are received one by one in slave mode so there are no hardware limitations forcing a 1 byte rx count limit.
ARMmbed · Jan 27, 2022 · d408c7d · d408c7d
1 parent 4095c65
commit d408c7d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/targets/TARGET_STM/TARGET_STM32H7/objects.h b/targets/TARGET_STM/TARGET_STM32H7/objects.h
@@ -120,8 +120,8 @@ struct i2c_s {
  volatile uint8_t pending_slave_tx_master_rx;
  volatile uint8_t pending_slave_rx_maxter_tx;
  uint8_t *slave_rx_buffer;
- volatile uint8_t slave_rx_buffer_size;
- volatile uint8_t slave_rx_count;
+ volatile uint16_t slave_rx_buffer_size;
+ volatile uint16_t slave_rx_count;
 #endif
 #if DEVICE_I2C_ASYNCH
  uint32_t address;