flash内得程序代码以最快速度运行，需要设置flash配置寄存器的等待周期数，而“设置flash配置寄存器的等待周期数”的这段代码是不能在flash内部执行的，这样就会出现两种实际的配置方式：
一种是2812系统无外扩程序存储器，此时程序只能写在2812内部得flash区，程序运行开始后，需要将“设置flash配置寄存器的等待周期数”的这段代码用数据复制的方式复制到内部sram区，比如
L0 区，然后使用跳转指令跳转到L0
区“设置flash配置寄存器的等待周期数”的代码进行flash配置寄存器的设置，设置完成后再使用跳转指令跳转到flash程序区执行正常的功能程序。这样以后的flash内的代码就会以最快速度运行。
还有一种是2812系统外扩了部分“引导”程序存储器，“设置flash配置寄存器的等待周期数”的这段代码放置在外扩的“引导”程序存储器内，而其他的所有程序代码都放在2812内部flash区，系统复位后，首先运行外扩的“引导”程序存储器内的程序，一旦完成了对内部flash配置寄存器的设置后，即跳转到flash程序区执行正常的功能程序。
正如上述，对2812外部接口XINTF配置寄存器的设置代码，也是不能在“外部”程序代码区进行的，为了实现对其的正常设置，可仿照上述办法进行相关操作。
成功烧写TMS320F2812经验
分类:默认栏目用的是CCS2.20版本提供的SDFLASH,设置好SDFLASH后,主要是要将需要下载的.out文件写进去.
关键在于在线仿真时的cmd文件要加以更换成新的.使用的是:
-o .DebugPULSE_AD.out
-m PULSE_AD.map
MEMORY
{
PAGE 0 :
OTP : origin = 0x3D7800, length = 0x000800
FLASHJ : origin = 0x3D8000, length = 0x002000
FLASHI : origin = 0x3DA000, length = 0x002000
FLASHH : origin = 0x3DC000, length = 0x004000
FLASHG : origin = 0x3E0000, length = 0x004000
FLASHF : origin = 0x3E4000, length = 0x004000
FLASHE : origin = 0x3E8000, length = 0x004000
FLASHD : origin = 0x3EC000, length = 0x004000
FLASHC : origin = 0x3F0000, length = 0x004000
FLASHB : origin = 0x3F4000, length = 0x002000
FLASHA : origin = 0x3F6000, length = 0x001FF6
BEGIN : origin = 0x3F7FF6, length = 0x000002
PASSWDS : origin = 0x3F7FF8, length = 0x000008
ROM : origin = 0x3FF000, length = 0x000FC0
VECTORS : origin = 0x3FFFC2, length = 0x00003E
PAGE 1 :
/* SARAM */
RAMM0M1 : origin = 0x000000, length = 0x000800
/* Peripheral Frame 0: */
DEV_EMU : origin = 0x000880, length = 0x000180
FLASH_REGS : origin = 0x000A80, length = 0x000060
CSM : origin = 0x000AE0, length = 0x000010
XINTF : origin = 0x000B20, length = 0x000020
CPU_TIMER0 : origin = 0x000C00, length = 0x000008
CPU_TIMER1 : origin = 0x000C08, length = 0x000008
CPU_TIMER2 : origin = 0x000C10, length = 0x000008
PIE_CTRL : origin = 0x000CE0, length = 0x000020
PIE_VECT : origin = 0x000D00, length = 0x000100
/* Peripheral Frame 1: */
ECAN_A : origin = 0x006000, length = 0x000100
ECAN_AMBOX : origin = 0x006100, length = 0x000100
/* Peripheral Frame 2: */
SYSTEM : origin = 0x007010, length = 0x000020
SPI_A : origin = 0x007040, length = 0x000010
SCI_A : origin = 0x007050, length = 0x000010
XINTRUPT : origin = 0x007070, length = 0x000010
GPIOMUX : origin = 0x0070C0, length = 0x000020
GPIODAT : origin = 0x0070E0, length = 0x000020
ADC : origin = 0x007100, length = 0x000020
EV_A : origin = 0x007400, length = 0x000040
EV_B : origin = 0x007500, length = 0x000040
SPI_B : origin = 0x007740, length = 0x000010
SCI_B : origin = 0x007750, length = 0x000010
MCBSP_A : origin = 0x007800, length = 0x000040
/* CSM Password Locations */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008
/* SARAM */
RAML0L1 : origin = 0x008000, length = 0x002000
RAMH0 : origin = 0x3F8000, length = 0x002000
}
SECTIONS
{
/* Allocate program areas: */
.reset : > BEGIN PAGE = 0
vectors : > VECTORS PAGE = 0
.cinit : > FLASHJ PAGE = 0
.text : > FLASHA PAGE = 0
/* Allocate data areas: */
.stack : > RAMM0M1 PAGE = 1
.bss : > RAML0L1 PAGE = 1
.ebss : > RAML0L1 PAGE = 1
.const: load = FLASHB PAGE 0, run = RAML0L1
PAGE 1
{
/* Get Run Address */
__const_run = .;
/* Mark Load Address*/
*(.c_mark)
/* Allocate .const */
*(.const)
/* Compute Length */
__const_length = .-__const_run;
}
.econst: load = FLASHB PAGE 0, run = RAML0L1
PAGE 1
{
/* Get Run Address */
__econst_run = .;
/* Mark Load Address*/
*(.ec_mark)
/* Allocate .const */
*(.econst)
/* Compute Length */
__econst_length = .-__econst_run;
}
.sysmem : > RAMH0 PAGE = 1
/* Allocate IQ math areas: */
IQmath : > FLASHI PAGE = 0 /* Math Code */
IQmathFastTables : > FLASHI PAGE = 0 /* Math Tables in fast memory
*/
IQmathTables : > ROM PAGE = 0 /* Math Tables In ROM */
/* Allocate Peripheral Frame 0 Register Structures: */
DevEmuRegsFile : > DEV_EMU PAGE = 1
FlashRegsFile : > FLASH_REGS PAGE = 1
CsmRegsFile : > CSM PAGE = 1
XintfRegsFile : > XINTF PAGE = 1
CpuTimer0RegsFile : > CPU_TIMER0 PAGE = 1
CpuTimer1RegsFile : > CPU_TIMER1 PAGE = 1
CpuTimer2RegsFile : > CPU_TIMER2 PAGE = 1
PieCtrlRegsFile : > PIE_CTRL PAGE = 1
PieVectTable : > PIE_VECT PAGE = 1
/* Allocate Peripheral Frame 2 Register Structures: */
ECanaRegsFile : > ECAN_A PAGE = 1
ECanaMboxesFile : > ECAN_AMBOX PAGE = 1
/* Allocate Peripheral Frame 1 Register Structures: */
SysCtrlRegsFile : > SYSTEM PAGE = 1
SpiaRegsFile : > SPI_A PAGE = 1
SciaRegsFile : > SCI_A PAGE = 1
XIntruptRegsFile : > XINTRUPT PAGE = 1
GpioMuxRegsFile : > GPIOMUX PAGE = 1
GpioDataRegsFile : > GPIODAT PAGE = 1
AdcRegsFile : > ADC PAGE = 1
EvaRegsFile : > EV_A PAGE = 1
EvbRegsFile : > EV_B PAGE = 1
ScibRegsFile : > SCI_B PAGE = 1
McbspaRegsFile : > MCBSP_A PAGE = 1
/* CSM Password Locations */
CsmPwlFile : > CSM_PWL PAGE = 1
} |
