This commit is contained in:
bernard 2017-10-25 07:25:39 +08:00
commit d9592457fb
15 changed files with 560 additions and 20 deletions

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@ -67,7 +67,7 @@ SECTIONS
__data_end = .;
. = ALIGN(4);
__bss_start = __data_end;
__bss_start = .;
.bss :
{
*(.bss)

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@ -75,7 +75,7 @@ SECTIONS
__data_end = .;
. = ALIGN(4);
__bss_start = __data_end;
__bss_start = .;
.bss :
{
*(.bss)

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@ -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;
}

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@ -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

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@ -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

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@ -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 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)
/*
* 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;
}
/*
* 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 ;
}
/*
* SPI时钟频率计算分频系数
* @max_speed_hz SPI最大通信速度
* @ret
*/
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;
}
/*
*
* @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 ;
}
/*
* ()
* @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 ;
}
/*
*
* @spi_info_p SPI模块信息
* @new_status 01
*/
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 ;
}
/*
* 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 ;
}
/*
*
*/
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 ;
}
/*
*
*/
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0linux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 ;
}
/*
* SPI发送接收一个字节
*
* SPI总线上的从设备通信
* 1c的每路SPI上可能接有不同的从设备
* @spi_info_p SPI接口
* @tx_ch
* @ret
*/
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;
}

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@ -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 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;
/*
* SPI模块
* @spi_info_p SPI模块信息
*/
void spi_init(ls1c_spi_info_t *spi_info_p);
/*
*
* @spi_info_p SPI模块信息
* @new_status 01
*/
void spi_set_cs(ls1c_spi_info_t *spi_info_p, int new_status);
/*
* SPI发送接收一个字节
*
* SPI总线上的从设备通信
* 1c的每路SPI上可能接有不同的从设备
* @spi_info_p SPI接口
* @tx_ch
* @ret
*/
unsigned char spi_txrx_byte(ls1c_spi_info_t *spi_info_p, unsigned char tx_ch);
/*
* 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

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@ -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)),

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@ -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==========================='

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@ -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

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@ -92,7 +92,7 @@ SECTIONS
__data_end = .;
. = ALIGN(4);
__bss_start = __data_end;
__bss_start = 0;
.bss :
{
*(.bss)

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@ -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;
}

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@ -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)

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@ -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')

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@ -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