1 // Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 // The HAL layer for UART (IRAM part)
16 #include "hal/uart_hal.h"
17
uart_hal_txfifo_rst(uart_hal_context_t * hal)18 void uart_hal_txfifo_rst(uart_hal_context_t *hal)
19 {
20 uart_ll_txfifo_rst(hal->dev);
21 }
22
uart_hal_rxfifo_rst(uart_hal_context_t * hal)23 void uart_hal_rxfifo_rst(uart_hal_context_t *hal)
24 {
25 uart_ll_rxfifo_rst(hal->dev);
26 }
27
uart_hal_tx_break(uart_hal_context_t * hal,uint32_t break_num)28 void uart_hal_tx_break(uart_hal_context_t *hal, uint32_t break_num)
29 {
30 uart_ll_tx_break(hal->dev, break_num);
31 }
32
uart_hal_write_txfifo(uart_hal_context_t * hal,const uint8_t * buf,uint32_t data_size,uint32_t * write_size)33 void uart_hal_write_txfifo(uart_hal_context_t *hal, const uint8_t *buf, uint32_t data_size, uint32_t *write_size)
34 {
35 uint16_t fill_len = uart_ll_get_txfifo_len(hal->dev);
36 if (fill_len > data_size) {
37 fill_len = data_size;
38 }
39 *write_size = fill_len;
40 uart_ll_write_txfifo(hal->dev, buf, fill_len);
41 }
42
uart_hal_read_rxfifo(uart_hal_context_t * hal,uint8_t * buf,int * inout_rd_len)43 void uart_hal_read_rxfifo(uart_hal_context_t *hal, uint8_t *buf, int *inout_rd_len)
44 {
45 if (*inout_rd_len <= 0) {
46 *inout_rd_len = uart_ll_get_rxfifo_len(hal->dev);
47 }
48 uart_ll_read_rxfifo(hal->dev, buf, *inout_rd_len);
49 }
50
