Merge branch 'master' of https://github.com/RT-Thread/rt-thread
This commit is contained in:
commit
d9592457fb
|
@ -67,7 +67,7 @@ SECTIONS
|
|||
__data_end = .;
|
||||
|
||||
. = ALIGN(4);
|
||||
__bss_start = __data_end;
|
||||
__bss_start = .;
|
||||
.bss :
|
||||
{
|
||||
*(.bss)
|
||||
|
|
|
@ -75,7 +75,7 @@ SECTIONS
|
|||
__data_end = .;
|
||||
|
||||
. = ALIGN(4);
|
||||
__bss_start = __data_end;
|
||||
__bss_start = .;
|
||||
.bss :
|
||||
{
|
||||
*(.bss)
|
||||
|
|
|
@ -137,3 +137,46 @@ int ls1c_ffs(int x)
|
|||
}
|
||||
|
||||
|
||||
/*
|
||||
* fls - find last (most-significant) bit set
|
||||
* @x: the word to search
|
||||
*
|
||||
* This is defined the same way as ffs.
|
||||
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
|
||||
*/
|
||||
int ls1c_fls(int x)
|
||||
{
|
||||
int r = 32;
|
||||
|
||||
if (!x)
|
||||
return 0;
|
||||
if (!(x & 0xffff0000u))
|
||||
{
|
||||
x <<= 16;
|
||||
r -= 16;
|
||||
}
|
||||
if (!(x & 0xff000000u))
|
||||
{
|
||||
x <<= 8;
|
||||
r -= 8;
|
||||
}
|
||||
if (!(x & 0xf0000000u))
|
||||
{
|
||||
x <<= 4;
|
||||
r -= 4;
|
||||
}
|
||||
if (!(x & 0xc0000000u))
|
||||
{
|
||||
x <<= 2;
|
||||
r -= 2;
|
||||
}
|
||||
if (!(x & 0x80000000u))
|
||||
{
|
||||
x <<= 1;
|
||||
r -= 1;
|
||||
}
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
@ -26,6 +26,8 @@ extern struct callvectors *callvec;
|
|||
#define MIN(a, b) ((a) > (b) ? (b) : (a))
|
||||
#define MAX(a, b) ((a) > (b) ? (a) : (b))
|
||||
|
||||
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
|
||||
|
||||
typedef enum
|
||||
{
|
||||
FALSE=0,
|
||||
|
@ -95,6 +97,15 @@ unsigned int reg_read_32(volatile unsigned int *addr);
|
|||
*/
|
||||
int ls1c_ffs(int x);
|
||||
|
||||
/*
|
||||
* fls - find last (most-significant) bit set
|
||||
* @x: the word to search
|
||||
*
|
||||
* This is defined the same way as ffs.
|
||||
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
|
||||
*/
|
||||
int ls1c_fls(int x);
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
@ -117,5 +117,16 @@
|
|||
#define LS1C_I2C2_BASE (0xbfe70000)
|
||||
|
||||
|
||||
// SPI寄存器
|
||||
#define LS1C_SPI0_BASE (0xbfe80000)
|
||||
#define LS1C_SPI1_BASE (0xbfec0000)
|
||||
|
||||
|
||||
// 串口寄存器
|
||||
#define LS1C_UART0_BASE (0xbfe40000)
|
||||
#define LS1C_UART1_BASE (0xbfe44000)
|
||||
#define LS1C_UART2_BASE (0xbfe48000)
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
@ -0,0 +1,378 @@
|
|||
/*
|
||||
* File : ls1c_spi.c
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, 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
|
||||
* 2017-10-23 勤为本 first version
|
||||
*/
|
||||
|
||||
// 硬件spi接口源文件
|
||||
|
||||
|
||||
#include <string.h>
|
||||
#include "ls1c_public.h"
|
||||
#include "ls1c_regs.h"
|
||||
#include "ls1c_clock.h"
|
||||
#include "ls1c_spi.h"
|
||||
|
||||
|
||||
// 寄存器偏移
|
||||
#define LS1C_SPI_SPCR_OFFSET (0) // 控制寄存器
|
||||
#define LS1C_SPI_SPSR_OFFSET (1) // 状态寄存器
|
||||
#define LS1C_SPI_TxFIFO_OFFSET (2) // 发送的数据寄存器,与接收数据寄存器的偏移相同
|
||||
#define LS1C_SPI_RxFIFO_OFFSET (2) // 接收的数据寄存器,与发送数据寄存器的偏移相同
|
||||
#define LS1C_SPI_SPER_OFFSET (3) // 外部寄存器
|
||||
#define LS1C_SPI_SFC_PARAM_OFFSET (4) // 参数控制寄存器
|
||||
#define LS1C_SPI_SFC_SOFTCS_OFFSET (5) // 片选控制寄存器
|
||||
#define LS1C_SPI_SFC_TIMING_OFFSET (6) // 时序控制寄存器
|
||||
|
||||
// 寄存器SPCR中的位域
|
||||
#define LS1C_SPI_SPCR_SPIE_BIT (7)
|
||||
#define LS1C_SPI_SPCR_SPIE_MASK (0x01 << LS1C_SPI_SPCR_SPIE_BIT)
|
||||
#define LS1C_SPI_SPCR_SPE_BIT (6)
|
||||
#define LS1C_SPI_SPCR_SPE_MASK (0x01 << LS1C_SPI_SPCR_SPE_BIT)
|
||||
#define LS1C_SPI_SPCR_CPOL_BIT (3)
|
||||
#define LS1C_SPI_SPCR_CPOL_MASK (0x01 << LS1C_SPI_SPCR_CPOL_BIT)
|
||||
#define LS1C_SPI_SPCR_CPHA_BIT (2)
|
||||
#define LS1C_SPI_SPCR_CPHA_MASK (0x01 << LS1C_SPI_SPCR_CPHA_BIT)
|
||||
#define LS1C_SPI_SPCR_SPR_BIT (0)
|
||||
#define LS1C_SPI_SPCR_SPR_MASK (0x03 << LS1C_SPI_SPCR_SPR_BIT)
|
||||
|
||||
// 寄存器SPSR中的位域
|
||||
#define LS1C_SPI_SPSR_SPIF_BIT (7)
|
||||
#define LS1C_SPI_SPSR_SPIF_MASK (0x01 << LS1C_SPI_SPSR_SPIF_BIT)
|
||||
#define LS1C_SPI_SPSR_WCOL_BIT (6)
|
||||
#define LS1C_SPI_SPSR_WCOL_MASK (0x01 << LS1C_SPI_SPSR_WCOL_BIT)
|
||||
|
||||
// 寄存器SPER中的位域
|
||||
#define LS1C_SPI_SPER_SPRE_BIT (0)
|
||||
#define LS1C_SPI_SPER_SPRE_MASK (0x3 << LS1C_SPI_SPER_SPRE_BIT)
|
||||
|
||||
// 寄存器SFC_SOFTCS的位域
|
||||
#define LS1C_SPI_SFC_SOFTCS_CSN_BIT (4)
|
||||
#define LS1C_SPI_SFC_SOFTCS_CSN_MASK (0x0f << LS1C_SPI_SFC_SOFTCS_CSN_BIT)
|
||||
#define LS1C_SPI_SFC_SOFTCS_CSEN_BIT (0)
|
||||
#define LS1C_SPI_SFC_SOFTCS_CSEN_MASK (0x0f << LS1C_SPI_SFC_SOFTCS_CSEN_BIT)
|
||||
|
||||
// 发送超时的门限值
|
||||
#define LS1C_SPI_TX_TIMEOUT (20000)
|
||||
|
||||
|
||||
/*
|
||||
* 获取指定SPI模块的基地址
|
||||
* @SPIx SPI模块的编号
|
||||
*/
|
||||
inline void *spi_get_base(ls1c_spi_t SPIx)
|
||||
{
|
||||
void *base = NULL;
|
||||
|
||||
switch (SPIx)
|
||||
{
|
||||
case LS1C_SPI_0:
|
||||
base = (void *)LS1C_SPI0_BASE;
|
||||
break;
|
||||
|
||||
case LS1C_SPI_1:
|
||||
base = (void *)LS1C_SPI1_BASE;
|
||||
break;
|
||||
|
||||
default:
|
||||
base = NULL;
|
||||
break;
|
||||
}
|
||||
|
||||
return base;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 打印指定SPI模块的所有寄存器的值
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_print_all_regs_info(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
|
||||
rt_kprintf("[%s] SPI%d's info:\r\n\
|
||||
SPCR=0x%x, SPSR=0x%x, SPER=0x%x, SFC_PARAM=0x%x, SFC_SOFTCS=0x%x, SFC_TIMING=0x%x\r\n",
|
||||
__FUNCTION__, spi_info_p->SPIx,
|
||||
reg_read_8(spi_base + LS1C_SPI_SPCR_OFFSET),
|
||||
reg_read_8(spi_base + LS1C_SPI_SPSR_OFFSET),
|
||||
reg_read_8(spi_base + LS1C_SPI_SPER_OFFSET),
|
||||
reg_read_8(spi_base + LS1C_SPI_SFC_PARAM_OFFSET),
|
||||
reg_read_8(spi_base + LS1C_SPI_SFC_SOFTCS_OFFSET),
|
||||
reg_read_8(spi_base + LS1C_SPI_SFC_TIMING_OFFSET));
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 根据SPI时钟频率计算分频系数
|
||||
* @max_speed_hz SPI最大通信速度
|
||||
* @ret 分频系数
|
||||
*/
|
||||
unsigned int spi_get_div(unsigned int max_speed_hz)
|
||||
{
|
||||
unsigned long clk = 0;
|
||||
unsigned int div = 0;
|
||||
unsigned int div_tmp = 0;
|
||||
unsigned int bit = 0;
|
||||
|
||||
clk = clk_get_apb_rate();
|
||||
div = DIV_ROUND_UP(clk, max_speed_hz);
|
||||
|
||||
if (div < 2)
|
||||
div = 2;
|
||||
|
||||
if (div > 4096)
|
||||
div = 4096;
|
||||
|
||||
bit = ls1c_fls(div) - 1;
|
||||
switch (1 << bit)
|
||||
{
|
||||
case 16:
|
||||
div_tmp = 2;
|
||||
if (div > (1 << bit))
|
||||
{
|
||||
div_tmp++;
|
||||
}
|
||||
break;
|
||||
|
||||
case 32:
|
||||
div_tmp = 3;
|
||||
if (div > (1 << bit))
|
||||
{
|
||||
div_tmp += 2;
|
||||
}
|
||||
break;
|
||||
|
||||
case 8:
|
||||
div_tmp = 4;
|
||||
if (div > (1 << bit))
|
||||
{
|
||||
div_tmp -= 2;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
div_tmp = bit - 1;
|
||||
if (div > (1 << bit))
|
||||
{
|
||||
div_tmp++;
|
||||
}
|
||||
break;
|
||||
}
|
||||
/*
|
||||
rt_kprintf("[%s] clk=%ld, max_speed_hz=%d, div_tmp=%d, bit=%d\r\n",
|
||||
__FUNCTION__, clk, max_speed_hz, div_tmp, bit);
|
||||
*/
|
||||
return div_tmp;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 设置时钟
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_set_clock(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned int div = 0;
|
||||
unsigned char val = 0;
|
||||
|
||||
// 获取分频系数
|
||||
div = spi_get_div(spi_info_p->max_speed_hz);
|
||||
|
||||
// 设置spr
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SPCR_OFFSET);
|
||||
val &= (~LS1C_SPI_SPCR_SPR_MASK); // spr清零
|
||||
val |= (div & LS1C_SPI_SPCR_SPR_MASK); // 设置新的spr
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SPCR_OFFSET);
|
||||
|
||||
// 设置spre
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SPER_OFFSET);
|
||||
val &= (~LS1C_SPI_SPER_SPRE_MASK); // spre清零
|
||||
val |= ((div >> 2) & LS1C_SPI_SPER_SPRE_MASK); // 设置新的spre
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SPER_OFFSET);
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 设置通信模式(时钟极性和相位)
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_set_mode(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned char val = 0;
|
||||
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SPCR_OFFSET);
|
||||
|
||||
// 设置时钟极性--cpol
|
||||
val &= (~LS1C_SPI_SPCR_CPOL_MASK); // cpol清0
|
||||
val |= (spi_info_p->cpol << LS1C_SPI_SPCR_CPOL_BIT); // 写入新的cpol
|
||||
|
||||
// 设置时钟相位--cpha
|
||||
val &= (~LS1C_SPI_SPCR_CPHA_MASK); // cpha清0
|
||||
val |= (spi_info_p->cpha << LS1C_SPI_SPCR_CPHA_BIT); // 写入新的cpha
|
||||
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SPCR_OFFSET);
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 设置指定片选为指定状态
|
||||
* @spi_info_p SPI模块信息
|
||||
* @new_status 片选引脚的新状态,取值为0或1,即高电平或低电平
|
||||
*/
|
||||
void spi_set_cs(ls1c_spi_info_t *spi_info_p, int new_status)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned char cs = spi_info_p->cs;
|
||||
unsigned char val = 0;
|
||||
|
||||
val = 0xf0 | (0x01 << cs); // 全部csn=1,指定的csen=1
|
||||
if (new_status) // cs = 1
|
||||
{
|
||||
val |= (0x10 << cs); // 指定csn=1
|
||||
}
|
||||
else // cs = 0
|
||||
{
|
||||
val &= ~(0x10 << cs); // 指定csn=0
|
||||
}
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SFC_SOFTCS_OFFSET);
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 初始化指定SPI模块
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_init(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned char val = 0;
|
||||
|
||||
// 使能SPI控制器,master模式,关闭中断
|
||||
reg_write_8(0x53, spi_base + LS1C_SPI_SPCR_OFFSET);
|
||||
|
||||
// 清空状态寄存器
|
||||
reg_write_8(0xc0, spi_base + LS1C_SPI_SPSR_OFFSET);
|
||||
|
||||
// 1字节产生中断,采样(读)与发送(写)时机同时
|
||||
reg_write_8(0x03, spi_base + LS1C_SPI_SPER_OFFSET);
|
||||
|
||||
// 关闭SPI flash
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SFC_PARAM_OFFSET);
|
||||
val &= 0xfe;
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SFC_PARAM_OFFSET);
|
||||
|
||||
// spi flash时序控制寄存器
|
||||
reg_write_8(0x05, spi_base + LS1C_SPI_SFC_TIMING_OFFSET);
|
||||
|
||||
// 设置时钟
|
||||
spi_set_clock(spi_info_p);
|
||||
|
||||
// 设置通信模式(时钟极性和相位)
|
||||
spi_set_mode(spi_info_p);
|
||||
|
||||
// 打印寄存器信息(用于调试)
|
||||
// spi_print_all_regs_info(spi_info_p);
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 等待收发完成
|
||||
*/
|
||||
inline void spi_wait_txrx_done(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
int timeout = LS1C_SPI_TX_TIMEOUT;
|
||||
|
||||
while (timeout--)
|
||||
{
|
||||
if (LS1C_SPI_SPSR_SPIF_MASK & reg_read_8(spi_base + LS1C_SPI_SPSR_OFFSET))
|
||||
break;
|
||||
}
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* 清中断和标志位
|
||||
*/
|
||||
inline void spi_clear(ls1c_spi_info_t *spi_info_p)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned char val = 0;
|
||||
|
||||
// 清中断
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SPSR_OFFSET);
|
||||
val |= LS1C_SPI_SPSR_SPIF_MASK;
|
||||
reg_write_8(val, spi_base + LS1C_SPI_SPSR_OFFSET);
|
||||
|
||||
// 清溢出标志位(Write-Collision Clear)
|
||||
val = reg_read_8(spi_base + LS1C_SPI_SPSR_OFFSET);
|
||||
if (LS1C_SPI_SPSR_WCOL_MASK & val)
|
||||
{
|
||||
rt_kprintf("[%s] clear register SPSR's wcol!\r\n"); // 手册和linux源码中不一样,加个打印看看
|
||||
reg_write_8(val & ~LS1C_SPI_SPSR_WCOL_MASK, spi_base + LS1C_SPI_SPSR_OFFSET); // 写0,linux源码中是写0
|
||||
// reg_write_8(val | LS1C_SPI_SPSR_WCOL_MASK, spi_base + LS1C_SPI_SPSR_OFFSET); // 写1,按照1c手册,应该写1
|
||||
}
|
||||
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* 通过指定SPI发送接收一个字节
|
||||
* 注意,在多任务的系统中,此函数需要互斥。
|
||||
* 即保证在和某个从设备收发某个字节的过程中,不能被切换到其它任务同时与另外的在同一个SPI总线上的从设备通信
|
||||
* 因为龙芯1c的每路SPI上可能接有不同的从设备,通信频率、模式等可能不同
|
||||
* @spi_info_p SPI接口
|
||||
* @tx_ch 待发送的数据
|
||||
* @ret 收到的数据
|
||||
*/
|
||||
unsigned char spi_txrx_byte(ls1c_spi_info_t *spi_info_p, unsigned char tx_ch)
|
||||
{
|
||||
void *spi_base = spi_get_base(spi_info_p->SPIx);
|
||||
unsigned char rx_ch = 0;
|
||||
|
||||
// 收发数据
|
||||
reg_write_8(tx_ch, spi_base + LS1C_SPI_TxFIFO_OFFSET); // 开始发送
|
||||
spi_wait_txrx_done(spi_info_p); // 等待收发完成
|
||||
rx_ch = reg_read_8(spi_base + LS1C_SPI_RxFIFO_OFFSET); // 读取收到的数据
|
||||
spi_clear(spi_info_p); // 清中断和标志位
|
||||
|
||||
return rx_ch;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,100 @@
|
|||
/*
|
||||
* File : ls1c_spi.h
|
||||
* This file is part of RT-Thread RTOS
|
||||
* COPYRIGHT (C) 2006 - 2012, 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
|
||||
* 2017-10-23 勤为本 first version
|
||||
*/
|
||||
|
||||
// 硬件spi接口的头文件
|
||||
|
||||
#ifndef __OPENLOONGSON_SPI_H
|
||||
#define __OPENLOONGSON_SPI_H
|
||||
|
||||
|
||||
// SPI模块编号
|
||||
typedef enum
|
||||
{
|
||||
LS1C_SPI_0 = 0,
|
||||
LS1C_SPI_1,
|
||||
}ls1c_spi_t;
|
||||
|
||||
|
||||
// 片选
|
||||
#define LS1C_SPI_INVALID_CS (-1)
|
||||
#define LS1C_SPI_CS_0 (0)
|
||||
#define LS1C_SPI_CS_1 (1)
|
||||
#define LS1C_SPI_CS_2 (2)
|
||||
#define LS1C_SPI_CS_3 (3)
|
||||
|
||||
// 时钟极性和相位
|
||||
#define SPI_CPOL_1 (1)
|
||||
#define SPI_CPOL_0 (0)
|
||||
#define SPI_CPHA_1 (1)
|
||||
#define SPI_CPHA_0 (0)
|
||||
|
||||
|
||||
// 硬件SPI信息
|
||||
typedef struct
|
||||
{
|
||||
ls1c_spi_t SPIx; // SPI模块编号
|
||||
unsigned long max_speed_hz; // 最大通信速度,单位hz
|
||||
unsigned char cs; // 片选
|
||||
unsigned char cpol; // 时钟极性
|
||||
unsigned char cpha; // 时钟相位
|
||||
}ls1c_spi_info_t;
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* 初始化指定SPI模块
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_init(ls1c_spi_info_t *spi_info_p);
|
||||
|
||||
|
||||
/*
|
||||
* 设置指定片选为指定状态
|
||||
* @spi_info_p SPI模块信息
|
||||
* @new_status 片选引脚的新状态,取值为0或1,即高电平或低电平
|
||||
*/
|
||||
void spi_set_cs(ls1c_spi_info_t *spi_info_p, int new_status);
|
||||
|
||||
|
||||
/*
|
||||
* 通过指定SPI发送接收一个字节
|
||||
* 注意,在多任务的系统中,此函数需要互斥。
|
||||
* 即保证在和某个从设备收发某个字节的过程中,不能被切换到其它任务同时与另外的在同一个SPI总线上的从设备通信
|
||||
* 因为龙芯1c的每路SPI上可能接有不同的从设备,通信频率、模式等可能不同
|
||||
* @spi_info_p SPI接口
|
||||
* @tx_ch 待发送的数据
|
||||
* @ret 收到的数据
|
||||
*/
|
||||
unsigned char spi_txrx_byte(ls1c_spi_info_t *spi_info_p, unsigned char tx_ch);
|
||||
|
||||
|
||||
/*
|
||||
* 打印指定SPI模块的所有寄存器的值
|
||||
* @spi_info_p SPI模块信息
|
||||
*/
|
||||
void spi_print_all_regs_info(ls1c_spi_info_t *spi_info_p);
|
||||
|
||||
|
||||
#endif
|
||||
|
|
@ -172,7 +172,7 @@ unsigned long timer_get_time_ns(timer_info_t *timer_info)
|
|||
*/
|
||||
timer_clk = clk_get_apb_rate();
|
||||
time_ns = (cntr * 1000 ) / (timer_clk /1000000);
|
||||
// myprintf("[%s] time_us=%lu, cntr=%d, timer_clk=%d\n", __FUNCTION__, time_ns, cntr, timer_clk);
|
||||
// rt_kprintf("[%s] time_us=%lu, cntr=%d, timer_clk=%d\n", __FUNCTION__, time_ns, cntr, timer_clk);
|
||||
|
||||
return time_ns;
|
||||
}
|
||||
|
@ -188,7 +188,7 @@ void timer_print_regs(timer_info_t *timer_info)
|
|||
unsigned int timer_reg_base = 0;
|
||||
|
||||
timer_reg_base = timer_get_reg_base(timer_info->timer);
|
||||
myprintf("CNTR=0x%x, HRC=0x%x, LRC=0x%x, CTRL=0x%x\n",
|
||||
rt_kprintf("CNTR=0x%x, HRC=0x%x, LRC=0x%x, CTRL=0x%x\n",
|
||||
reg_read_32((volatile unsigned int *)(timer_reg_base + LS1C_PWM_CNTR)),
|
||||
reg_read_32((volatile unsigned int *)(timer_reg_base + LS1C_PWM_HRC)),
|
||||
reg_read_32((volatile unsigned int *)(timer_reg_base + LS1C_PWM_LRC)),
|
||||
|
|
|
@ -12,6 +12,7 @@ if os.getenv('RTT_CC'):
|
|||
|
||||
if CROSS_TOOL == 'gcc':
|
||||
PLATFORM = 'gcc'
|
||||
# EXEC_PATH = "/opt/mips-2015.05/bin"
|
||||
EXEC_PATH = r'D:\mgc\embedded\codebench\bin'
|
||||
else:
|
||||
print '================ERROR==========================='
|
||||
|
|
|
@ -1,11 +1,9 @@
|
|||
#include <rtthread.h>
|
||||
#include <dfs.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#ifdef _WIN32
|
||||
#include <stdlib.h>
|
||||
#endif
|
||||
|
||||
#include <rtthread.h>
|
||||
#include <dfs.h>
|
||||
|
||||
#ifdef DEBUG
|
||||
# define SD_TRACE rt_kprintf
|
||||
|
|
|
@ -92,7 +92,7 @@ SECTIONS
|
|||
__data_end = .;
|
||||
|
||||
. = ALIGN(4);
|
||||
__bss_start = __data_end;
|
||||
__bss_start = 0;
|
||||
.bss :
|
||||
{
|
||||
*(.bss)
|
||||
|
|
|
@ -128,7 +128,7 @@ int fd_new(void)
|
|||
/* can't find an empty fd entry */
|
||||
if (idx == DFS_FD_MAX)
|
||||
{
|
||||
idx = -1;
|
||||
idx = -(1 + DFS_FD_OFFSET);
|
||||
goto __result;
|
||||
}
|
||||
|
||||
|
|
|
@ -8,7 +8,7 @@ group = []
|
|||
CPPPATH = [cwd]
|
||||
CPPDEFINES = ['RT_USING_MINILIBC']
|
||||
|
||||
if rtconfig.PLATFORM == 'gcc' and not GetDepend('RT_USING_LIBC'):
|
||||
if rtconfig.PLATFORM == 'gcc' and rtconfig.ARCH != 'sim' and not GetDepend('RT_USING_LIBC'):
|
||||
group = DefineGroup('libc', src, depend = [''],
|
||||
CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
|
||||
|
||||
|
|
|
@ -5,6 +5,6 @@ src = Glob('*.c')
|
|||
|
||||
CPPPATH = [cwd]
|
||||
|
||||
group = DefineGroup('LwIP', src, depend = ['RT_USING_LWIP', 'LWIP_USING_DHCPD'], CPPPATH = CPPPATH)
|
||||
group = DefineGroup('lwIP', src, depend = ['RT_USING_LWIP', 'LWIP_USING_DHCPD'], CPPPATH = CPPPATH)
|
||||
|
||||
Return('group')
|
||||
|
|
|
@ -695,15 +695,13 @@ def SrcRemove(src, remove):
|
|||
if not src:
|
||||
return
|
||||
|
||||
if type(src[0]) == type('str'):
|
||||
for item in src:
|
||||
for item in src:
|
||||
if type(item) == type('str'):
|
||||
if os.path.basename(item) in remove:
|
||||
src.remove(item)
|
||||
return
|
||||
|
||||
for item in src:
|
||||
if os.path.basename(item.rstr()) in remove:
|
||||
src.remove(item)
|
||||
else:
|
||||
if os.path.basename(item.rstr()) in remove:
|
||||
src.remove(item)
|
||||
|
||||
def GetVersion():
|
||||
import SCons.cpp
|
||||
|
|
Loading…
Reference in New Issue