387 lines
13 KiB
C
387 lines
13 KiB
C
/*!
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\file uart.c
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\brief UART BSP for GD32W51x WiFi SDK
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\version 2021-10-30, V1.0.0, firmware for GD32W51x
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*/
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/*
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Copyright (c) 2021, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "app_cfg.h"
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#include "bsp_inc.h"
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#include "gd32w51x_usart.h"
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#include "platform_def.h"
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#include "uart.h"
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#include "malloc.h"
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#include "wifi_netlink.h"
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#include "wakelock.h"
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#include "console.h"
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char uart_buf[UART_BUFFER_SIZE];
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int index = 0;
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#if defined(__ARMCC_VERSION)
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//#if 1
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/* retarget the C library printf function to the USART */
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int fputc(int ch, FILE *f)
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{
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, (uint8_t)ch);
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return ch;
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}
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int fgetc(FILE *f)
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{
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_RBNE));
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return usart_data_receive(LOG_UART);
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}
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#elif defined(__ICCARM__)
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int putchar(int ch)
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{
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/* Send byte to USART */
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, (uint8_t)ch);
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/* Return character written */
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return ch;
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}
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#elif defined(__GNUC__)
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int _write(int fd, char *str, int len)
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{
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(void)fd;
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int32_t i = 0;
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/* Send string and return the number of characters written */
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while (i != len) {
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, *str);
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str++;
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i++;
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}
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_TC));
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return i;
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}
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int _read(int handle, char *buffer, int size)
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{
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uint8_t ch = 0U;
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int actualSize = 0;
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/* This function only reads from "standard in", for all other file handles it returns failure. */
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if (handle != 0) {
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return -1;
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}
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/* Receive data. */
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for (; size > 0; size--) {
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while(RESET == usart_flag_get(LOG_UART, USART_FLAG_RBNE));
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*buffer++ = (char)usart_data_receive(LOG_UART);
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actualSize++;
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if ((ch == 0U) || (ch == (uint8_t)'\n') || (ch == (uint8_t)'\r')) {
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break;
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}
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}
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return (actualSize > 0) ? actualSize : -1;
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}
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#endif
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/*!
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\brief configure usart
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\param[in] usart_periph: USARTx(x=0,1)
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\param[out] none
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\retval none
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*/
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void usart_config(uint32_t usart_periph)
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{
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if (usart_periph == USART0) {
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rcu_periph_clock_enable(RCU_USART0);
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rcu_periph_clock_enable(RCU_GPIOA);
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gpio_af_set(GPIOA, GPIO_AF_7, GPIO_PIN_9);
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gpio_af_set(GPIOA, GPIO_AF_7, GPIO_PIN_15);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_9);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_15);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_15);
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} else if (usart_periph == USART1) {
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rcu_periph_clock_enable(RCU_USART1);
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rcu_periph_clock_enable(RCU_GPIOA);
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rcu_periph_clock_enable(RCU_GPIOB);
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gpio_af_set(GPIOB, GPIO_AF_7, GPIO_PIN_15);
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gpio_af_set(GPIOA, GPIO_AF_3, GPIO_PIN_8);
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_15);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_15);
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gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_8);
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_8);
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} else if (usart_periph == USART2) {
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rcu_periph_clock_enable(RCU_USART2);
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rcu_periph_clock_enable(RCU_GPIOB);
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gpio_af_set(GPIOB, GPIO_AF_7, GPIO_PIN_10);
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gpio_af_set(GPIOB, GPIO_AF_7, GPIO_PIN_11);
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_10);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_10);
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gpio_mode_set(GPIOB, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_11);
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gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_25MHZ, GPIO_PIN_11);
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}
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usart_deinit(usart_periph);
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usart_baudrate_set(usart_periph, 115200);
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usart_receive_config(usart_periph, USART_RECEIVE_ENABLE);
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usart_transmit_config(usart_periph, USART_TRANSMIT_ENABLE);
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usart_interrupt_enable(usart_periph, USART_INT_RBNE);
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usart_enable(usart_periph);
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}
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/*!
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\brief reconfigure usart
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\param[in] uart_conf: pointer to the input structure
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usart_periph: USARTx(x=0,1,2)
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baudrate: baud rate value
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databits: USART word length configure
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only one parameter can be selected which is shown as below:
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\arg USART_WL_8BIT: 8 bits
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\arg USART_WL_9BIT: 9 bits
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stopbits: USART stop bit configure
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only one parameter can be selected which is shown as below:
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\arg USART_STB_1BIT: 1 bit
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\arg USART_STB_0_5BIT: 0.5bit
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\arg USART_STB_2BIT: 2 bits
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\arg USART_STB_1_5BIT: 1.5bit
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parity: USART parity configure
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only one parameter can be selected which is shown as below:
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\arg USART_PM_NONE: no parity
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\arg USART_PM_ODD: odd parity
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\arg USART_PM_EVEN: even parity
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flow_ctrl: flow control
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only one parameter can be selected which is shown as below:
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\arg USART_RTS_ENABLE: enable RTS
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\arg USART_RTS_DISABLE: disable RTS
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\arg USART_CTS_ENABLE: enable CTS
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\arg USART_CTS_DISABLE: disable CTS
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\param[out] none
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\retval none
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*/
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void usart_reconfig(uart_config_t *uart_conf)
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{
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usart_tx_idle_wait(uart_conf->usart_periph);
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usart_deinit(uart_conf->usart_periph);
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usart_baudrate_set(uart_conf->usart_periph, uart_conf->baudrate);
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usart_word_length_set(uart_conf->usart_periph, uart_conf->databits);
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usart_stop_bit_set(uart_conf->usart_periph, uart_conf->stopbits);
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usart_parity_config(uart_conf->usart_periph, uart_conf->parity);
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usart_hardware_flow_cts_config(uart_conf->usart_periph, uart_conf->flow_ctrl);
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usart_hardware_flow_rts_config(uart_conf->usart_periph, uart_conf->flow_ctrl);
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usart_receive_config(uart_conf->usart_periph, USART_RECEIVE_ENABLE);
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usart_transmit_config(uart_conf->usart_periph, USART_TRANSMIT_ENABLE);
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usart_interrupt_enable(uart_conf->usart_periph, USART_INT_RBNE);
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usart_enable(uart_conf->usart_periph);
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}
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/*!
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\brief wait usart transmission completed
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[out] none
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\retval none
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*/
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void usart_tx_idle_wait(uint32_t usart_periph)
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{
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while (RESET == usart_flag_get(usart_periph, USART_FLAG_TC));
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}
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/*!
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\brief wait LOG_UART usart transmit data register empty and transmit a data
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\param[in] c: transmit data
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\param[out] none
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\retval none
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*/
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void uart_putc_noint(uint8_t c)
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{
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while (RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, (uint8_t)c);
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}
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/*!
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\brief wait LOG_UART usart transmit data register empty and transmit data
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\param[in] s: pointer to the transmit datas
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\param[out] none
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\retval none
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*/
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void uart_puts_noint(const char *s)
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{
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if (*s == 0) {
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return;
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}
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while (1) {
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while (RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, *s++);
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if (*s == 0) {
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return;
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}
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}
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}
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/*!
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\brief wait LOG_UART usart transmit data register empty and transmit data
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\param[in] d: pointer to the transmit data
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\param[in] size: put data length
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\param[out] none
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\retval none
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*/
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void uart_put_data_noint(const uint8_t *d, int size)
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{
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if (size == 0){
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return;
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}
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while (1) {
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while (RESET == usart_flag_get(LOG_UART, USART_FLAG_TBE));
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usart_data_transmit(LOG_UART, *d++);
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size--;
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if (size == 0) {
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return;
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}
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}
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}
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/*!
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\brief log uart interrupt handler
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\param[in] none
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\param[out] none
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\retval none
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*/
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void log_uart_interrupt_handler(void) SECTION_RAM_CODE
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{
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uint8_t rx_char;
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char ch;
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os_task_t *receiver_tcb;
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WIFI_MESSAGE_TYPE_E msg_type;
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if ((RESET != usart_interrupt_flag_get(LOG_UART, USART_INT_FLAG_RBNE)) &&
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(RESET != usart_flag_get(LOG_UART, USART_FLAG_RBNE))) {
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rx_char = (uint8_t)usart_data_receive(LOG_UART);
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#ifndef CONFIG_USE_GD32F4XX_UART
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if (RESET != usart_flag_get(LOG_UART, USART_FLAG_ORERR)) {
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usart_flag_clear(LOG_UART, USART_FLAG_ORERR);
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}
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#endif
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ch = (char)rx_char;
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if (isprint(ch)) {
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if (index == 0) {
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sys_wakelock_acquire(LOCK_ID_USART);
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}
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uart_buf[index++] = ch;
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if (index >= UART_BUFFER_SIZE)
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index = 0;
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uart_putc_noint(ch);
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} else if (ch == '\r') { /* putty doesn't transmit '\n' */
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int32_t msg_waiting = 0;
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uart_buf[index] = '\0';
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index = 0;
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msg_type = WIFI_MESSAGE_SHELL_COMMAND;
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receiver_tcb = &console_task_tcb;
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msg_waiting = sys_task_msg_num(receiver_tcb, 1);
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if ((msg_waiting >= 0) && (msg_waiting < (CONSOLE_TASK_QUEUE_SIZE - 1))) {
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sys_task_post(receiver_tcb, &msg_type, 1);
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}
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sys_wakelock_release(LOCK_ID_USART);
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} else if (ch == '\b') { /* non-destructive backspace */
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if (index > 0)
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uart_buf[--index] = '\0';
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uart_putc_noint(ch);
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}
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}
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}
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#if 0
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/*!
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\brief uart2 interrupt handler
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\param[in] none
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\param[out] none
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\retval none
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*/
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void uart2_interrupt_handler(void)
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{
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uint8_t rx_char;
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char ch;
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OS_ERR err;
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void *msg_ptr = NULL;
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OS_MSG_SIZE msg_size = 0;
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OS_TC *receiver_tcb;
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WIFI_MESSAGE_T *wifi_msg;
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if (uart_get_intr(UART2, UART_IID_Rx_Line_Status)) {
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if (uart_get_status(UART2, UART_LSR_Frame_Err | UART_LSR_Parity_Err | UART_LSR_Overrun_Err)) {
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}
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}
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if (uart_get_intr(UART2, UART_IID_Rx_Data_Available)) {
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rx_char = uart_recv_data(UART2);
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ch = (char)rx_char;
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if(ch == '\r') { // enter
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uart_buf[index] = '\0';
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index=0;
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wifi_msg = (WIFI_MESSAGE_T *)sys_malloc(sizeof(WIFI_MESSAGE_T));
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wifi_msg->msg_type = WIFI_MESSAGE_SHELL_COMMAND;
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wifi_msg->msg_data = NULL;
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receiver_tcb = &console_task_tcb;
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msg_size = sizeof(*wifi_msg);
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msg_ptr = (void *)wifi_msg;
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OSTaskQPost(receiver_tcb, msg_ptr, msg_size, OS_OPT_POST_FIFO, &err);
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}
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if(ch == '\b') { // backspace
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if(index>0)
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uart_buf[--index] = '\0';
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}
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if((ch > 31) && (ch < 128)) {
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uart_buf[index++] = ch;
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if(index >= UART_BUFFER_SIZE)
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index=0;
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uart_putc_noint(ch);
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}
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}
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}
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#endif
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