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/*
* File : interrupt.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2015-04-14 ArdaFu first version
*/
#include "asm9260t.h"
#include "rtthread.h"
#include "uart.h"
void Hw_UartDisable(HW_USART_TypeDef* uartBase)
{
uartBase->INTR[R_CLR] = ASM_UART_INTR_RXIEN | ASM_UART_INTR_TXIEN | ASM_UART_INTR_RTIS;
uartBase->CTRL2[R_CLR] = ASM_UART_CTRL2_TXE | ASM_UART_CTRL2_RXE;
}
void Hw_UartEnable(HW_USART_TypeDef* uartBase)
{
uartBase->CTRL2[R_CLR] = 0x0000C000UL; //clear CTSEN and RTSEN
uartBase->CTRL2[R_SET] = ASM_UART_CTRL2_TXE | ASM_UART_CTRL2_RXE | ASM_UART_CTRL2_USARTEN;
uartBase->INTR[R_SET] = ASM_UART_INTR_RXIEN | ASM_UART_INTR_RTIEN;
}
void Hw_UartReset(HW_USART_TypeDef* uartBase)
{
uartBase->CTRL0[R_CLR] = ASM_UART_CTRL0_SFTRST | ASM_UART_CTRL0_CLKGATE | ASM_UART_CTRL0_RXTO_ENABLE;
uartBase->CTRL0[R_SET] = ASM_UART_CTRL0_SFTRST | ASM_UART_CTRL0_CLKGATE | ASM_UART_CTRL0_RXTO_ENABLE;
}
void Hw_UartConfig(HW_USART_TypeDef* uartBase,int baudRate, int dataBits, int stopBits,int parity)
{
rt_uint32_t mode = ASM_UART_LINECTRL_FEN;
switch (dataBits)
{
case 8:
mode |= ASM_UART_LINECTRL_WLEN8;
break;
case 7:
mode |= ASM_UART_LINECTRL_WLEN7;
break;
case 6:
mode |= ASM_UART_LINECTRL_WLEN6;
break;
case 5:
mode |= ASM_UART_LINECTRL_WLEN5;
break;
default:
mode |= ASM_UART_LINECTRL_WLEN8;
break;
}
switch (stopBits)
{
case 2:
mode |= ASM_UART_LINECTRL_STP2;
break;
case 1:
default:
break;
}
switch (parity)
{
case 1:
mode |= ASM_UART_LINECTRL_PEN;
break;
case 2:
mode |= ASM_UART_LINECTRL_PEN | ASM_UART_LINECTRL_EPS;
break;
case 0:
default:
break;
}
//16bit nBaudDivint
mode |= (((12000000 <<2 ) / baudRate) & UART_BAUD_DIVINT_MASK) << 10;
//6bit nNaudDivfrac
mode |= (((12000000 <<2 ) / baudRate) & UART_BAUD_DIVFRAC_MASK) << 8;
uartBase->LINECTRL[R_VAL] = mode;
}
void Hw_UartInit(int index)
{
// uart0 = bit11, uart9 = bit20
int ctrl_bit = index + 11;
outl(1UL<<ctrl_bit,REG_SET(HW_AHBCLKCTRL0)); //UART4 ENABLE bit15
outl(0x1, HW_UART0CLKDIV + index*4); //UART4 div 2
outl(1UL<<ctrl_bit,REG_CLR(HW_AHBCLKCTRL0)); //UART4 clk gate
outl(1UL<<ctrl_bit,REG_SET(HW_AHBCLKCTRL0)); //UART4 clk gate
outl(1UL<<ctrl_bit,REG_CLR(HW_PRESETCTRL0)); //UART4 reset
outl(1UL<<ctrl_bit,REG_SET(HW_PRESETCTRL0)); //UART4 reset
}
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