#include "M451Series.h"
#include "AT45DB321.h"
unsigned char DATA_BUF;
void delay(void)
{
unsigned int i = 0;
for(i=0;i<10;i++)
{
__nop();
}
}
unsigned char SpiRead(void)
{
unsigned char i;
//先读到最高位，最后是最低位
for(i=0;i<8;i++)
{
DATA_BUF = DATA_BUF << 1;
AT45_SCK = 1;
if(AT45_SO)
{
DATA_BUF += 1;
}
else
{
DATA_BUF += 0;
}
AT45_SCK = 0;
}
return DATA_BUF;
}
void SpiWrite(unsigned char wdata)
{
unsigned char i;
DATA_BUF = wdata;
AT45_SCK = 0;
for(i=0;i<8;i++)
{
//先写最高位，最后写最低位
if(DATA_BUF >> 7)
{
AT45_SI = 1;
}
else
{
AT45_SI = 0;
}
AT45_SCK = 1;
DATA_BUF = DATA_BUF << 1;
AT45_SCK = 0;
}
}
unsigned int AT45DB321_Read_ID(void)
//返回4字节的ID
//see datasheet page 26
/*
byte 1: Manufacturer ID 1FH = ATMEL
byte 2:
Family Code Density Code
001 00111
001 = DataFlash
00111 = 32M-bit = 4MB
byte 3:
MLC code Product Version Code
000 00001
byte 4: Byte Count
读取ID已成功 2018.6.20
----------------------------------------
M453 AT45DB321 Programmer Lower V1.0
SVEBRS 2018.6.19
CPU @ 72000000 Hz
----------------------------------------
id[0] = 0x1f -> ATMEL
id[1] = 0x27 -> DataFlash 32Mb = 4MB
id[2] = 0x01
id[3] = 0x01
*/
{
unsigned int read_id = 0;
union sv_32 temp_union_32;
temp_union_32.Val = 0;
AT45_CS = 0;
SpiWrite(OPCODE_READ_ID);
temp_union_32.c[0] = SpiRead();
temp_union_32.c[1] = SpiRead();
temp_union_32.c[2] = SpiRead();
temp_union_32.c[3] = SpiRead();
read_id = temp_union_32.Val;
AT45_CS = 1;
return read_id;
}
unsigned char AT45DB321_Read_Status(void)
//see datasheet page 23
/*
已读出状态
----------------------------------------
M453 AT45DB321 Programmer Lower V1.0
SVEBRS 2018.6.19
CPU @ 72000000 Hz
----------------------------------------
id[0] = 0x1f
id[1] = 0x27
id[2] = 0x01
id[3] = 0x01
status = 0xb4 1011 0100
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
RDY/BUSY(/) COMP 1 1 0 1 PROTECT PAGE SIZE
bit7: 1-free 0-busy
bit1: 1-sector protection enabled 0-sector protection disabled
bit0: 1-page size is 512B 0-page size is 528B
*/
{
unsigned char read_status = 0;
AT45_CS = 0;
SpiWrite(OPCODE_READ_STATUS);
read_status = SpiRead();
AT45_CS = 1;
return read_status;
}
unsigned char AT45DB321_Is_Busy(void)
{
unsigned char status = 0;
status = AT45DB321_Read_Status();
if((status & (1<<7)) >> 7 == 0x01)
//BUSY为低电平有效
//not busy
{
return 0;
}
else
//busy
{
return 1;
}
}
void AT45DB321_Wait_Busy(void)
{
while(AT45DB321_Is_Busy());
}
/*
page: 0-8191
页编码
offset: 0-527
页内偏移
rbuf: 读出的数据
rlen: 读出的数据长度
*/
unsigned char AT45DB321_Page_Read(unsigned int page, unsigned int offset,
unsigned char *rbuf, unsigned int rlen)
//注意规划字库存储时，每页就用512，容易计算
//读取页成功 2018.6.20
//读取页内偏移成功 2018.6.20 15:43
{
unsigned int i;
unsigned int addr = FLASH_ADDR(page, offset);
unsigned char status = 0;
AT45DB321_Wait_Busy();
AT45_CS = 0;
SpiWrite(OPCODE_READ);
SpiWrite(addr >> 16);
SpiWrite(addr >> 8);
SpiWrite(addr >> 0);
for(i=0;i<rlen;i++)
{
rbuf = SpiRead();
}
AT45_CS = 1;
return 0;
}
unsigned char AT45DB321_Page_Write(unsigned int page, unsigned int offset,
unsigned char *wbuf, unsigned int wlen)
//注意规划字库存储时，每页就用512，容易计算
{
unsigned int i;
unsigned int addr = FLASH_ADDR(page, offset);
AT45DB321_Wait_Busy();
AT45_CS = 0;
SpiWrite(OPCODE_WRITE);
SpiWrite(addr >> 16);
SpiWrite(addr >> 8);
SpiWrite(addr >> 0);
for(i=0;i<wlen;i++)
{
SpiWrite(wbuf);
}
AT45_CS = 1;
return 0;
}
unsigned char AT45DB321_Page_Erase(unsigned int page)
//注意规划字库存储时，每页就用512，容易计算
//页擦除成功 2018.6.20
/*
----------------------------------------
AT45DB321 read id :
id[0] = 0x1f
id[1] = 0x27
id[2] = 0x01
id[3] = 0x01
----------------------------------------
AT45DB321 read status :
status = 0xb4
before erase.
page: 0
read page->[0]aa [1]aa [2]aa [3]aa [4]aa [5]aa [6]aa [7]aa [8]aa [9]aa [10]45 [11]e2 [12]2b [13]02 [14]16 [15]03 [16]1b [17]4b [18]10 [19]9a [20]80 [21]c2 [22]69 [23]d1 [24]88 [25]a0 [26]88 [27]d7 [28]20 [29]58 [30]01 [31]2e [32]62 [33]46 [34]77 [35]02 [36]32 [37]ac [38]95 [39]15 [40]01 [41]a0 [42]60 [43]98 [44]c1 [45]52 [46]41 [47]40 [48]22 [49]59 [50]01 [51]02 [52]6a [53]fd [54]b0 [55]21 [56]dc [57]01 [58]3e [59]e8 [60]06 [61]8c [62]d5 [63]89 [64]a2 [65]f8 [66]c0 [67]87 [68]11 [69]50 [70]00 [71]6e [72]98 [73]82 [74]10 [75]22 [76]55 [77]8a [78]b3 [79]01 [80]6a [81]09 [82]2e [83]cc [84]2a [85]11 [86]2c [87]18 [88]35 [89]28 [90]bf [91]74 [92]a1 [93]88 [94]11 [95]25 [96]c7 [97]d4 [98]88 [99]ea [100]4c [101]d7 [102]81 [103]82 [104]5c [105]7b [106]35 [107]25 [108]a2 [109]ac [110]00 [111]e7 [112]d0 [113]90 [114]52 [115]1b [116]19 [117]73 [118]3f [119]3a [120]21 [121]7a [122]a1 [123]64 [124]00 [125]2a [126]c4 [127]4d [128]d9 [129]21 [130]4c [131]9a [132]6c [133]75 [134]43 [135]82 [136]1a [137]1b [138]03 [139]70 [140]db [141]08 [142]a5 [143]50 [144]d0 [145]8c [146]d0 [147]8d [148]82 [149]f0 [150]20 [151]bb [152]0d [153]e0 [154]29 [155]76 [156]71 [157]03 [158]90 [159]85 [160]39 [161]91 [162]04 [163]88 [164]8d [165]c2 [166]65 [167]58 [168]e6 [169]4f [170]8a [171]5f [172]14 [173]3a [174]1b [175]20 [176]d9 [177]b0 [178]be [179]b8 [180]24 [181]84 [182]08 [183]c1 [184]13 [185]05 [186]e8 [187]8f [188]ee [189]ec [190]83 [191]26 [192]f0 [193]58 [194]15 [195]61 [196]11 [197]17 [198]f4 [199]b9
after erase.
page: 0
read page->[0]ff [1]ff [2]ff [3]ff [4]ff [5]ff [6]ff [7]ff [8]ff [9]ff [10]ff [11]ff [12]ff [13]ff [14]ff [15]ff [16]ff [17]ff [18]ff [19]ff [20]ff [21]ff [22]ff [23]ff [24]ff [25]ff [26]ff [27]ff [28]ff [29]ff [30]ff [31]ff [32]ff [33]ff [34]ff [35]ff [36]ff [37]ff [38]ff [39]ff [40]ff [41]ff [42]ff [43]ff [44]ff [45]ff [46]ff [47]ff [48]ff [49]ff [50]ff [51]ff [52]ff [53]ff [54]ff [55]ff [56]ff [57]ff [58]ff [59]ff [60]ff [61]ff [62]ff [63]ff [64]ff [65]ff [66]ff [67]ff [68]ff [69]ff [70]ff [71]ff [72]ff [73]ff [74]ff [75]ff [76]ff [77]ff [78]ff [79]ff [80]ff [81]ff [82]ff [83]ff [84]ff [85]ff [86]ff [87]ff [88]ff [89]ff [90]ff [91]ff [92]ff [93]ff [94]ff [95]ff [96]ff [97]ff [98]ff [99]ff [100]ff [101]ff [102]ff [103]ff [104]ff [105]ff [106]ff [107]ff [108]ff [109]ff [110]ff [111]ff [112]ff [113]ff [114]ff [115]ff [116]ff [117]ff [118]ff [119]ff [120]ff [121]ff [122]ff [123]ff [124]ff [125]ff [126]ff [127]ff [128]ff [129]ff [130]ff [131]ff [132]ff [133]ff [134]ff [135]ff [136]ff [137]ff [138]ff [139]ff [140]ff [141]ff [142]ff [143]ff [144]ff [145]ff [146]ff [147]ff [148]ff [149]ff [150]ff [151]ff [152]ff [153]ff [154]ff [155]ff [156]ff [157]ff [158]ff [159]ff [160]ff [161]ff [162]ff [163]ff [164]ff [165]ff [166]ff [167]ff [168]ff [169]ff [170]ff [171]ff [172]ff [173]ff [174]ff [175]ff [176]ff [177]ff [178]ff [179]ff [180]ff [181]ff [182]ff [183]ff [184]ff [185]ff [186]ff [187]ff [188]ff [189]ff [190]ff [191]ff [192]ff [193]ff [194]ff [195]ff [196]ff [197]ff [198]ff [199]ff
*/
{
unsigned int i;
unsigned int addr = (page & DATAFLASH_PAGE_MASK);
AT45DB321_Wait_Busy();
AT45_CS = 0;
SpiWrite(OPCODE_ERASE);
SpiWrite(addr >> 6);
SpiWrite(addr << 2);
SpiWrite(0x00);
AT45_CS = 1;
return 0;
}
/*
gbk是入口参数，最少为2个
zimo是出口参数，最少为32个
已测试 "瑞" GBK码
u8 gbk[10] = {"瑞"};
gbk->[0]c8 [1]f0 [2]00 [3]00 [4]00 [5]00 [6]00 [7]00 [8]00 [9]00
zimo->[0]00 [1]00 [2]00 [3]00 [4]00 [5]00 [6]00 [7]00 [8]00 [9]00 [10]00 [11]00 [12]00 [13]00 [14]00 [15]00 [16]00 [17]00 [18]00 [19]00 [20]00 [21]00 [22]00 [23]00 [24]00 [25]00 [26]00 [27]00 [28]00 [29]00 [30]00 [31]00
test[0] = 71 -> page_group
test[1] = 11 -> page_group_internal_offset
test[2] = 863 -> which_page
test[3] = 0 -> page_internal_offset
*/
void AT45DB321_Get_Zimo_With_GBK(unsigned char *gbk, unsigned char *zimo)
{
unsigned int page_group, page_group_internal_offset, which_page;
unsigned int page_internal_offset;
if((gbk[0] >= PAGE_GROUP_BASE) && (gbk[1] >= PAGE_GROUP_INTERNAL_BASE))
//区位码合法再读取
{
page_group = (gbk[0] - PAGE_GROUP_BASE);
//页组号 0-125
//0xFE - 0x81 + 1 = 126
page_group_internal_offset = ((gbk[1] & 0xF0) - PAGE_GROUP_INTERNAL_BASE) >> 4;
//页组内的偏移
which_page = (page_group * PAGE_GROUP_OFFSET) + page_group_internal_offset;
//具体的页号
page_internal_offset = ((gbk[1] & 0x0F) - PAGE_INTERNAL_BASE) * PAGE_INTERNAL_OFFSET;
//页内的字节偏移处
AT45DB321_Page_Read(which_page, page_internal_offset, zimo, PAGE_INTERNAL_OFFSET);
}
}
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