| /* |
| * |
| * Copyright (c) 2021 Project CHIP Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "pw_sys_io/sys_io.h" |
| #include <cassert> |
| #include <cinttypes> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "serial_api.h" |
| |
| #define UART_TX PA_18 |
| #define UART_RX PA_19 |
| |
| serial_t sobj; |
| int console_getchar(uint8_t * chr) |
| { |
| *chr = (uint8_t) serial_getc(&sobj); |
| return 1; |
| } |
| |
| int console_putchar(const char * chr) |
| { |
| serial_putc(&sobj, *chr); |
| return 1; |
| } |
| |
| void console_init(void) |
| { |
| serial_init(&sobj, UART_TX, UART_RX); |
| serial_baud(&sobj, 115200); |
| serial_format(&sobj, 8, ParityNone, 1); |
| } |
| |
| extern "C" void pw_sys_io_Init() |
| { |
| console_init(); |
| } |
| |
| namespace pw::sys_io { |
| |
| Status ReadByte(std::byte * dest) |
| { |
| if (!dest) |
| return Status::InvalidArgument(); |
| |
| int ret = console_getchar(reinterpret_cast<uint8_t *>(dest)); |
| return ret < 0 ? Status::FailedPrecondition() : OkStatus(); |
| } |
| |
| Status WriteByte(std::byte b) |
| { |
| int ret = console_putchar(reinterpret_cast<const char *>(&b)); |
| return ret < 0 ? Status::FailedPrecondition() : OkStatus(); |
| } |
| |
| // Writes a string using pw::sys_io, and add newline characters at the end. |
| StatusWithSize WriteLine(const std::string_view & s) |
| { |
| size_t chars_written = 0; |
| StatusWithSize result = WriteBytes(pw::as_bytes(pw::span(s))); |
| if (!result.ok()) |
| { |
| return result; |
| } |
| chars_written += result.size(); |
| result = WriteBytes(pw::as_bytes(pw::span("\r\n", 2))); |
| chars_written += result.size(); |
| |
| return StatusWithSize(result.status(), chars_written); |
| } |
| |
| } // namespace pw::sys_io |