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/*
* Copyright (c) 2006-2024 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-06-29 Rbb666 first version
* 2025-04-21 hydevcode modify xmc7100d uart
* 2025-05-12 Passionate0424 update ifx_control
*/
#include <rtthread.h>
#include "drv_uart.h"
#include "uart_config.h"
#include "cyhal_scb_common.h"
enum
{
#ifdef BSP_USING_UART0
UART0_INDEX,
#endif
#ifdef BSP_USING_UART1
UART1_INDEX,
#endif
#ifdef BSP_USING_UART2
UART2_INDEX,
#endif
#ifdef BSP_USING_UART3
UART3_INDEX,
#endif
#ifdef BSP_USING_UART4
UART4_INDEX,
#endif
#ifdef BSP_USING_UART5
UART5_INDEX,
#endif
#ifdef BSP_USING_UART6
UART6_INDEX,
#endif
};
static struct ifx_uart_config uart_config[] =
{
#ifdef BSP_USING_UART0
UART0_CONFIG,
#endif
#ifdef BSP_USING_UART1
UART1_CONFIG,
#endif
#ifdef BSP_USING_UART2
UART2_CONFIG,
#endif
#ifdef BSP_USING_UART3
UART3_CONFIG,
#endif
#ifdef BSP_USING_UART4
UART4_CONFIG,
#endif
#ifdef BSP_USING_UART5
UART5_CONFIG,
#endif
#ifdef BSP_USING_UART6
UART6_CONFIG,
#endif
};
static struct ifx_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] =
{0};
static void uart_isr(struct rt_serial_device *serial)
{
RT_ASSERT(serial != RT_NULL);
struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if ((uart->config->usart_x->INTR_RX_MASKED & SCB_INTR_RX_MASKED_NOT_EMPTY_Msk) != 0)
{
/* Clear UART "RX fifo not empty interrupt" */
uart->config->usart_x->INTR_RX = uart->config->usart_x->INTR_RX & SCB_INTR_RX_NOT_EMPTY_Msk;
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
}
#ifdef BSP_USING_UART0
/* UART0 Interrupt Hanlder */
void uart0_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART0_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART1
/* UART1 Interrupt Hanlder */
void uart1_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART1_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART2
/* UART2 Interrupt Hanlder */
void uart2_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART2_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART3
/* UART3 Interrupt Hanlder */
void uart3_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART3_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART4
/* UART4 Interrupt Hanlder */
void uart4_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART4_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART5
/* UART5 Interrupt Hanlder */
void uart5_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART5_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
#ifdef BSP_USING_UART6
/* UART5 Interrupt Hanlder */
void uart6_isr_callback(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&uart_obj[UART6_INDEX].serial);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
/*
* UARTHS interface
*/
static rt_err_t ifx_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
RT_ASSERT(serial != RT_NULL);
struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
cy_en_scb_uart_status_t result;
const cyhal_uart_cfg_t uart_config =
{
.data_bits = 8,
.stop_bits = 1,
.parity = CYHAL_UART_PARITY_NONE,
.rx_buffer = NULL,
.rx_buffer_size = 0
};
/* Initialize retarget-io to use the debug UART port */
result = cyhal_uart_init(uart->config->uart_obj, uart->config->tx_pin, uart->config->rx_pin, NC, NC, NULL, &uart_config);
if (result == CY_RSLT_SUCCESS)
{
result = cyhal_uart_set_baud(uart->config->uart_obj, cfg->baud_rate, NULL);
}
RT_ASSERT(result == RT_EOK);
return RT_EOK;
}
static rt_err_t ifx_control(struct rt_serial_device *serial, int cmd, void *arg)
{
RT_ASSERT(serial != RT_NULL);
struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
NVIC_DisableIRQ(uart->config->UART_SCB_IRQ_cfg->intrSrc);
break;
case RT_DEVICE_CTRL_SET_INT:
/* Unmasking only the RX fifo not empty interrupt bit */
uart->config->usart_x->INTR_RX_MASK = SCB_INTR_RX_MASK_NOT_EMPTY_Msk;
/* Interrupt Settings for UART */
Cy_SysInt_Init(uart->config->UART_SCB_IRQ_cfg, uart->config->userIsr);
/* Enable the interrupt */
#if defined(SOC_SERIES_IFX_XMC)
NVIC_DisableIRQ(UART_NvicMuxN_IRQn);
NVIC_EnableIRQ(UART_NvicMuxN_IRQn);
#else
NVIC_EnableIRQ(uart->config->UART_SCB_IRQ_cfg->intrSrc);
#endif
break;
}
return (RT_EOK);
}
static int ifx_uarths_putc(struct rt_serial_device *serial, char c)
{
RT_ASSERT(serial != RT_NULL);
struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if (_cyhal_scb_pm_transition_pending())
return CYHAL_SYSPM_RSLT_ERR_PM_PENDING;
uint32_t count = 0;
while (count == 0)
{
count = Cy_SCB_UART_Put(uart->config->usart_x, c);
}
return (1);
}
static int ifx_uarths_getc(struct rt_serial_device *serial)
{
int ch;
rt_uint8_t read_data;
RT_ASSERT(serial != RT_NULL);
struct ifx_uart *uart = (struct ifx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
ch = -1;
if (RT_EOK == cyhal_uart_getc(uart->config->uart_obj, (uint8_t *)&read_data, 10))
{
ch = read_data & 0xff;
}
else
{
ch = -1;
}
return ch;
}
const struct rt_uart_ops _uart_ops =
{
ifx_configure,
ifx_control,
ifx_uarths_putc,
ifx_uarths_getc,
RT_NULL
};
void rt_hw_uart_init(void)
{
int index;
rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct ifx_uart);
struct serial_configure serial_config = RT_SERIAL_CONFIG_DEFAULT;
rt_err_t result = 0;
for (index = 0; index < obj_num; index++)
{
uart_obj[index].config = &uart_config[index];
uart_obj[index].serial.ops = &_uart_ops;
uart_obj[index].serial.config = serial_config;
uart_obj[index].config->uart_obj = rt_malloc(sizeof(cyhal_uart_t));
RT_ASSERT(uart_obj[index].config->uart_obj != RT_NULL);
/* register uart device */
result = rt_hw_serial_register(&uart_obj[index].serial,
uart_obj[index].config->name,
RT_DEVICE_FLAG_RDWR |
RT_DEVICE_FLAG_INT_RX,
&uart_obj[index]);
RT_ASSERT(result == RT_EOK);
}
}
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