296 lines
6.5 KiB
C
296 lines
6.5 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-06-29 Rbb666 first version
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*/
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#include <rtthread.h>
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#include "drv_uart.h"
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#include "uart_config.h"
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#include "cyhal_scb_common.h"
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enum
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{
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#ifdef BSP_USING_UART0
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UART0_INDEX,
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#endif
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#ifdef BSP_USING_UART1
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UART1_INDEX,
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#endif
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#ifdef BSP_USING_UART2
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UART2_INDEX,
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#endif
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#ifdef BSP_USING_UART3
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UART3_INDEX,
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#endif
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#ifdef BSP_USING_UART4
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UART4_INDEX,
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#endif
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#ifdef BSP_USING_UART5
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UART5_INDEX,
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#endif
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};
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static struct ifx_uart_config uart_config[] =
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{
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#ifdef BSP_USING_UART0
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UART0_CONFIG,
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#endif
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#ifdef BSP_USING_UART1
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UART1_CONFIG,
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#endif
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#ifdef BSP_USING_UART2
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UART2_CONFIG,
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#endif
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#ifdef BSP_USING_UART3
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UART3_CONFIG,
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#endif
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#ifdef BSP_USING_UART4
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UART4_CONFIG,
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#endif
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#ifdef BSP_USING_UART5
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UART5_CONFIG,
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#endif
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};
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static struct ifx_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
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static void uart_isr(struct rt_serial_device *serial)
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{
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RT_ASSERT(serial != RT_NULL);
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struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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if ((uart->config->usart_x->INTR_RX_MASKED & SCB_INTR_RX_MASKED_NOT_EMPTY_Msk) != 0)
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{
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/* Clear UART "RX fifo not empty interrupt" */
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uart->config->usart_x->INTR_RX = uart->config->usart_x->INTR_RX & SCB_INTR_RX_NOT_EMPTY_Msk;
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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}
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}
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#ifdef BSP_USING_UART0
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/* UART0 Interrupt Hanlder */
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void uart0_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART0_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART1
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/* UART1 Interrupt Hanlder */
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void uart1_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART1_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART2
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/* UART2 Interrupt Hanlder */
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void uart2_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART2_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART3
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/* UART3 Interrupt Hanlder */
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void uart3_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART3_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART4
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/* UART4 Interrupt Hanlder */
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void uart4_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART4_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART5
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/* UART5 Interrupt Hanlder */
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void uart5_isr_callback(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&uart_obj[UART5_INDEX].serial);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif
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/*
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* UARTHS interface
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*/
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static rt_err_t ifx_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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RT_ASSERT(serial != RT_NULL);
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struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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cy_en_scb_uart_status_t result;
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const cyhal_uart_cfg_t uart_config =
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{
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.data_bits = 8,
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.stop_bits = 1,
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.parity = CYHAL_UART_PARITY_NONE,
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.rx_buffer = NULL,
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.rx_buffer_size = 0
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};
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/* Initialize retarget-io to use the debug UART port */
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result = cyhal_uart_init(uart->config->uart_obj, uart->config->tx_pin, uart->config->rx_pin, NC, NC, NULL, &uart_config);
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if (result == CY_RSLT_SUCCESS)
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{
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result = cyhal_uart_set_baud(uart->config->uart_obj, cfg->baud_rate, NULL);
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}
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RT_ASSERT(result != RT_ERROR);
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return RT_EOK;
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}
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static rt_err_t ifx_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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RT_ASSERT(serial != RT_NULL);
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struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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switch (cmd)
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{
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case RT_DEVICE_CTRL_CLR_INT:
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break;
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case RT_DEVICE_CTRL_SET_INT:
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/* Unmasking only the RX fifo not empty interrupt bit */
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uart->config->usart_x->INTR_RX_MASK = SCB_INTR_RX_MASK_NOT_EMPTY_Msk;
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/* Interrupt Settings for UART */
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Cy_SysInt_Init(uart->config->UART_SCB_IRQ_cfg, uart->config->userIsr);
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/* Enable the interrupt */
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NVIC_EnableIRQ(uart->config->intrSrc);
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break;
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}
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return (RT_EOK);
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}
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static int ifx_uarths_putc(struct rt_serial_device *serial, char c)
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{
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RT_ASSERT(serial != RT_NULL);
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struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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if (_cyhal_scb_pm_transition_pending())
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return CYHAL_SYSPM_RSLT_ERR_PM_PENDING;
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uint32_t count = 0;
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while (count == 0)
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{
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count = Cy_SCB_UART_Put(uart->config->usart_x, c);
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}
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return (1);
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}
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static int ifx_uarths_getc(struct rt_serial_device *serial)
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{
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int ch;
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rt_uint8_t read_data;
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RT_ASSERT(serial != RT_NULL);
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struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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ch = -1;
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if (RT_EOK == cyhal_uart_getc(uart->config->uart_obj, (uint8_t *)&read_data, 10))
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{
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ch = read_data & 0xff;
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}
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else
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{
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ch = -1;
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}
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return ch;
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}
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const struct rt_uart_ops _uart_ops =
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{
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ifx_configure,
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ifx_control,
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ifx_uarths_putc,
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ifx_uarths_getc,
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RT_NULL
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};
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void rt_hw_uart_init(void)
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{
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int index;
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rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct ifx_uart);
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struct serial_configure serial_config = RT_SERIAL_CONFIG_DEFAULT;
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rt_err_t result = 0;
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for (index = 0; index < obj_num; index++)
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{
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uart_obj[index].config = &uart_config[index];
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uart_obj[index].serial.ops = &_uart_ops;
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uart_obj[index].serial.config = serial_config;
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uart_obj[index].config->uart_obj = rt_malloc(sizeof(cyhal_uart_t));
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RT_ASSERT(uart_obj[index].config->uart_obj != RT_NULL);
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/* register uart device */
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result = rt_hw_serial_register(&uart_obj[index].serial,
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uart_obj[index].config->name,
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RT_DEVICE_FLAG_RDWR |
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RT_DEVICE_FLAG_INT_RX,
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&uart_obj[index]);
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RT_ASSERT(result == RT_EOK);
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}
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}
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