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/*
* Copyright (c) 2018, Synopsys, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <drivers/serial.h>
#include "rt_board.h"
#include "arc/arc_timer.h"
#include "arc/arc_exception.h"
#include "embARC_error.h"
static rt_err_t _configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
DEV_UART_PTR uart;
unsigned int id;
int ret;
id = (unsigned int)(serial->parent.user_data);
uart = uart_get_dev(id);
ret = uart->uart_control(UART_CMD_SET_BAUD, (void *)(cfg->baud_rate));
if (ret != E_OK) {
return RT_ERROR;
}
return RT_EOK;
}
static rt_err_t _control(struct rt_serial_device *serial, int cmd, void *arg)
{
DEV_UART_PTR uart;
unsigned int id;
id = (unsigned int)(serial->parent.user_data);
uart = uart_get_dev(id);
switch (cmd) {
case RT_DEVICE_CTRL_CLR_INT:
uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
break;
case RT_DEVICE_CTRL_SET_INT:
uart->uart_control(UART_CMD_SET_RXINT, (void *)1);
break;
case RT_DEVICE_CTRL_SUSPEND:
uart->uart_control(UART_CMD_DIS_DEV, (void *)0);
break;
case RT_DEVICE_CTRL_RESUME:
uart->uart_control(UART_CMD_ENA_DEV, (void *)0);
break;
default:
return RT_ERROR;
break;
}
return RT_EOK;
}
static int _putc(struct rt_serial_device *serial, char c)
{
DEV_UART_PTR uart;
unsigned int id;
int ret;
id = (unsigned int)(serial->parent.user_data);
uart = uart_get_dev(id);
ret = uart->uart_write(&c, 1);
if (ret < 0) {
return -1;
} else {
return 1;
}
}
static int _getc(struct rt_serial_device *serial)
{
DEV_UART_PTR uart;
unsigned int id;
unsigned int data;
int ret;
int rd_avail = 0;
id = (unsigned int)(serial->parent.user_data);
uart = uart_get_dev(id);
uart->uart_control(UART_CMD_GET_RXAVAIL, (void *)(&rd_avail));
if (rd_avail > 0) {
ret = uart->uart_read(&data, 1);
} else {
return -1;
}
if (ret < 0) {
return -1;
} else {
return data;
}
}
static const struct rt_uart_ops uart_ops =
{
_configure,
_control,
_putc,
_getc,
};
static struct rt_serial_device uart0;
static struct rt_serial_device uart1;
static struct rt_serial_device uart2;
static struct rt_serial_device uart3;
static void uart0_isr(void *ptr)
{
rt_hw_serial_isr((struct rt_serial_device*)&uart0, RT_SERIAL_EVENT_RX_IND);
}
static void uart1_isr(void *ptr)
{
rt_hw_serial_isr((struct rt_serial_device*)&uart1, RT_SERIAL_EVENT_RX_IND);
}
static void uart2_isr(void *ptr)
{
rt_hw_serial_isr((struct rt_serial_device*)&uart2, RT_SERIAL_EVENT_RX_IND);
}
static void uart3_isr(void *ptr)
{
rt_hw_serial_isr((struct rt_serial_device*)&uart3, RT_SERIAL_EVENT_RX_IND);
}
int rt_hw_uart_init(void)
{
DEV_UART_PTR uart;
struct serial_configure config;
int ret;
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
config.data_bits = DATA_BITS_8;
config.parity = PARITY_NONE;
config.stop_bits = STOP_BITS_1;
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
uart0.ops = &uart_ops;
uart0.config = config;
uart1.ops = &uart_ops;
uart1.config = config;
uart2.ops = &uart_ops;
uart2.config = config;
uart3.ops = &uart_ops;
uart3.config = config;
/* uart0 init */
uart = uart_get_dev(0);
if (uart != NULL) {
/* default format: 8bits, no parity, 1 stop bits */
ret = uart->uart_open(config.baud_rate);
if (ret != E_OPNED && ret != E_OK) {
return RT_ERROR;
}
/* enable rx int */
uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
/* use customized int isr */
uart->uart_control(UART_CMD_SET_RXCB, uart0_isr);
uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
rt_hw_serial_register(&uart0, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
(void *)0);
}
/* uart1 init */
uart = uart_get_dev(1);
if (uart != NULL) {
/* default format: 8bits, no parity, 1 stop bits */
ret = uart->uart_open(config.baud_rate);
if (ret != E_OPNED && ret != E_OK) {
return RT_ERROR;
}
/* enable rx int */
uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
/* use customized int isr */
uart->uart_control(UART_CMD_SET_RXCB, uart1_isr);
uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
rt_hw_serial_register(&uart1, "uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
(void *)1);
}
/* uart2 init */
uart = uart_get_dev(2);
if (uart != NULL) {
/* default format: 8bits, no parity, 1 stop bits */
ret = uart->uart_open(config.baud_rate);
if (ret != E_OPNED && ret != E_OK) {
return RT_ERROR;
}
/* enable rx int */
uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
/* use customized int isr */
uart->uart_control(UART_CMD_SET_RXCB, uart2_isr);
uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
rt_hw_serial_register(&uart2, "uart2",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
(void *)2);
}
/* uart3 init */
uart = uart_get_dev(3);
if (uart != NULL) {
/* default format: 8bits, no parity, 1 stop bits */
ret = uart->uart_open(config.baud_rate);
if (ret != E_OPNED && ret != E_OK) {
return RT_ERROR;
}
/* enable rx int */
uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
/* use customized int isr */
uart->uart_control(UART_CMD_SET_RXCB, uart3_isr);
uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
rt_hw_serial_register(&uart3, "uart3",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
(void *)3);
}
return RT_EOK;
}
#if defined BOARD_EMSK
#define CONSOLE_UART "uart1"
struct rt_serial_device *console_uart = &uart1;
#elif defined BOARD_IOTDK || defined BOARD_EMSDP || defined BOARD_NSIM
#define CONSOLE_UART "uart0"
struct rt_serial_device *console_uart = &uart0;
#elif defined BOARD_AXS
#define CONSOLE_UART "uart2"
struct rt_serial_device *console_uart = &uart2;
#elif defined BOARD_HSDK
#define CONSOLE_UART "uart3"
struct rt_serial_device *console_uart = &uart3;
#else
#error "no supported board selected!"
#endif
void rt_hw_console_output(const char *str)
{
while(*str != '\0')
{
if (*str == '\n') {
_putc(console_uart,'\r');
}
_putc(console_uart,*str);
str++;
}
}
void rt_hw_board_init()
{
rt_hw_uart_init();
rt_components_board_init();
rt_console_set_device(CONSOLE_UART);
}
static void rt_hw_timer_isr(int vector, void *param)
{
arc_timer_int_clear(BOARD_OS_TIMER_ID);
rt_tick_increase();
}
int rt_hw_timer_init(void)
{
unsigned int cyc = BOARD_CPU_CLOCK / RT_TICK_PER_SECOND;
int_disable(BOARD_OS_TIMER_INTNO); /* disable os timer interrupt */
arc_timer_stop(BOARD_OS_TIMER_ID);
arc_timer_start(BOARD_OS_TIMER_ID, TIMER_CTRL_IE | TIMER_CTRL_NH, cyc);
int_handler_install(BOARD_OS_TIMER_INTNO, (INT_HANDLER_T)rt_hw_timer_isr);
int_pri_set(BOARD_OS_TIMER_INTNO, INT_PRI_MIN + 1); /* currently, firq(INT_PRI_MIN) not supported*/
int_enable(BOARD_OS_TIMER_INTNO);
return 0;
}
INIT_BOARD_EXPORT(rt_hw_timer_init);
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