mcbsp_mode.asm

基于TI公司的5509平台的FLASH读写程序

	.include "mcbsp_reg.asm"
	.def spiFive8BitMode
	.def spiDouble8BitMode
	.def setToReadSequenceMode;single phase, 16bit-mode, 128channal.
	.def spiDouble8BitModeSecond
	.text
setToReadSequenceMode:;single phase, 16bit-mode, 128channal.
	*port(RCR1_0)=#7f40h
	*port(RCR2_0)=#1h
	*port(XCR1_0)=#7f40h
	*port(XCR2_0)=#1h
	*port(SRGR2_0)=#3800h
	*port(MCR1_0)=#1h
	*port(MCR2_0)=#1h
	
	*port(RCERA_0)=#0fffch
	*port(XCERA_0)=#03h
	
	*port(RCERB_0)=#0ffffh
	*port(RCERC_0)=#0ffffh
	*port(RCERD_0)=#0ffffh
	*port(RCERE_0)=#0ffffh
	*port(RCERF_0)=#0ffffh
	*port(RCERG_0)=#0ffffh
	*port(RCERH_0)=#0ffffh
	
	*port(XCERB_0)=#0
	*port(XCERC_0)=#0
	*port(XCERD_0)=#0
	*port(XCERE_0)=#0
	*port(XCERF_0)=#0
	*port(XCERG_0)=#0
	*port(XCERH_0)=#0
	return
	
spiDouble8BitMode:
	;disable the globle interrupt                                       ;
	bit(st1,#11)=#0h
	
	;reset the mcbsp usin serial port control register2
	*port(SPCR2_0)=#0200h	; doesn't need here
	
	;set the mcbsp value
	*port(SPCR1_0)=#1010h
	
	
	;here is the receive word length and word size
	*port(RCR1_0)=#0100h
	*port(RCR2_0)=#0001h ;receive frame don't ignal, and delay=1 bit
	;*port(RCR1_0)=#0400h ; for orignal use
	
	
	
	*port(XCR2_0)=#0001h;;change here
	;*port(XCR1_0)=#0400h ;change here for the frame length and word length
	*port(XCR1_0)=#0100h
	
	;set the mcbsp clk freqency in sample rate generater 2
	;*port(SRGR2_0)=#3028h
	*port(SRGR2_0)=#3010h
	*port(SRGR1_0)=#0009h ;change the frequency here to /9+1
	repeat(#10)
	nop_16
	
	;pin control register
	*port(PCR0)=#0a03h  ;active high, 3 is thoery value. 
	
	
	*port(MCR1_0)=#0001h ;never be changed!
	*port(MCR2_0)=#00001h ;change for the mutichannal
	
	*port(RCERA_0)=#0002h
	*port(XCERA_0)=#0003h
	
	*port(RCERB_0)=#0
	*port(RCERC_0)=#0
	*port(RCERD_0)=#0
	*port(RCERE_0)=#0
	*port(RCERF_0)=#0
	*port(RCERG_0)=#0
	*port(RCERH_0)=#0
	
	*port(XCERB_0)=#0
	*port(XCERC_0)=#0
	*port(XCERD_0)=#0
	*port(XCERE_0)=#0
	*port(XCERF_0)=#0
	*port(XCERG_0)=#0
	*port(XCERH_0)=#0

	
	;de-reset the serial port control register2 by 3 steps
	;1: sample rate generate
	;2: dx and dr
	;3: frame syc. 
	*port(SPCR2_0)=#0040h
	repeat(#20)
	nop_16
	
	*port(SPCR2_0)=#0041h
	*port(SPCR1_0)=#0081h
	
	*port(SPCR2_0)=#02C1h
	repeat(#80)
	nop_16	
	return



spiFive8BitMode:
	;reset the mcbsp usin serial port control register2
	*port(SPCR2_0)=#0200h;#0210h	;0200
	
	;set the mcbsp value
	*port(SPCR1_0)=#80h;#2010h;80
	
	*port(RCR2_0)=#0001h ;receive frame don't ignal, and delay=1 bit
	*port(RCR1_0)=#0400h
	
	*port(XCR2_0)=#0001h;;change here
	*port(XCR1_0)=#0400h ;change here for the frame length and word length
	
	
	;set the mcbsp clk freqency in sample rate generater 2
	*port(SRGR2_0)=#3028h;#3028h;
	*port(SRGR1_0)=#0009h ;change the frequency here to /9+1
	repeat(#10)
	nop_16
	
	;pin control register
	*port(PCR0)=#0a03h  ;active high, 3 is thoery value. 
	
	
	*port(MCR1_0)=#0001h ;never be changed!
	*port(MCR2_0)=#0001h ;change for the mutichannal
	
	*port(RCERA_0)=#00h;#0010h
	*port(XCERA_0)=#0h;00fh
	
	*port(RCERB_0)=#0
	*port(RCERC_0)=#0
	*port(RCERD_0)=#0
	*port(RCERE_0)=#0
	*port(RCERF_0)=#0
	*port(RCERG_0)=#0
	*port(RCERH_0)=#0
	
	*port(XCERB_0)=#0
	*port(XCERC_0)=#0
	*port(XCERD_0)=#0
	*port(XCERE_0)=#0
	*port(XCERF_0)=#0
	*port(XCERG_0)=#0
	*port(XCERH_0)=#0
	;de-reset the serial port control register2 by 3 steps
	;1: sample rate generate
	;2: dx and dr
	;3: frame syc. 
	*port(SPCR2_0)=#0040h;#0250h
	repeat(#20)
	nop_16
	
	*port(SPCR2_0)=#0041h
	*port(SPCR1_0)=#0081h;old value is 0080 disable or 0081 enable
	
	*port(SPCR2_0)=#02c1h
	repeat(#80)
	nop_16	
	return
	
	
	return
spiDouble8BitModeSecond:
	;disable the globle interrupt                                       ;
	bit(st1,#11)=#0h
	
	;reset the mcbsp usin serial port control register2
	;*port(SPCR2_0)=#0200h	; doesn't need here
	
	;set the mcbsp value
	;*port(SPCR1_0)=#1010h
	
	*port(RCR2_0)=#0001h ;receive frame don't ignal, and delay=1 bit
	;*port(RCR1_0)=#0400h ; for orignal use
	*port(RCR1_0)=#0100h
	
	
	*port(XCR2_0)=#0001h;;change here
	;*port(XCR1_0)=#0400h ;change here for the frame length and word length
	*port(XCR1_0)=#0100h
	
	;set the mcbsp clk freqency in sample rate generater 2
	;*port(SRGR2_0)=#3028h
	*port(SRGR2_0)=#3010h
	*port(SRGR1_0)=#0009h ;change the frequency here to /9+1
	repeat(#10)
	nop_16
	
	;pin control register
	*port(PCR0)=#0a03h  ;active high, 3 is thoery value. 
	
	
	*port(MCR1_0)=#0001h ;never be changed!
	*port(MCR2_0)=#00001h ;change for the mutichannal
	
	*port(RCERA_0)=#0000h
	*port(XCERA_0)=#0003h
	
	*port(RCERB_0)=#0
	*port(RCERC_0)=#0
	*port(RCERD_0)=#0
	*port(RCERE_0)=#0
	*port(RCERF_0)=#0
	*port(RCERG_0)=#0
	*port(RCERH_0)=#0
	
	*port(XCERB_0)=#0
	*port(XCERC_0)=#0
	*port(XCERD_0)=#0
	*port(XCERE_0)=#0
	*port(XCERF_0)=#0
	*port(XCERG_0)=#0
	*port(XCERH_0)=#0

	
	;de-reset the serial port control register2 by 3 steps
	;1: sample rate generate
	;2: dx and dr
	;3: frame syc. 
	;*port(SPCR2_0)=#0040h
	;repeat(#20)
	;nop_16
	
	;*port(SPCR2_0)=#0041h
	;*port(SPCR1_0)=#0081h
	
	;*port(SPCR2_0)=#02C1h
	;repeat(#80)
	;nop_16	
	return