source: S-port/trunk/Core/Src/AT45DB.c

Last change on this file was 1, checked in by AlexLir, 4 years ago
File size: 4.8 KB
Line 
1#include "AT45DB.h"
2
3#define StatusReg 0xD7
4#define WAIT(x) for(uint8_t i = 0; i < x; i++){}
5
6extern SPI_HandleTypeDef hspi3;
7uint8_t FlashCommand[8];
8
9void spiTransmit(uint8_t *data, uint16_t len)
10{
11 HAL_SPI_Transmit(&hspi3, data, len, 5000);
12// uint8_t f;
13// while(SPI3->SR & SPI_SR_BSY);
14// for(uint16_t i = 0; i < len; i++){
15// SPI3->DR = *data++;
16// while(!(SPI3->SR & SPI_SR_TXE));
17// while(!(SPI3->SR & SPI_SR_RXNE));
18// f = SPI3->DR;
19// }
20}
21
22void spiReceive(uint8_t *data, uint16_t len)
23{
24 HAL_SPI_Receive(&hspi3, data, len, 5000);
25// while(SPI3->SR & SPI_SR_BSY);
26// for(uint16_t i = 0; i < len; i++){
27// SPI3->DR = 0x00;
28// while(!(SPI3->SR & SPI_SR_TXE));
29// while(!(SPI3->SR & SPI_SR_RXNE));
30// *data++ = SPI3->DR;
31// }
32}
33
34uint8_t ReadStatusFlash (void)
35{
36 uint8_t FlashStatus;
37 FlashCommand[0] = StatusReg;
38 FLASH_CS_SET;
39 // __ASM("nop");
40 spiTransmit(FlashCommand, 1);
41 spiReceive(&FlashStatus, 1);
42 //HAL_SPI_Transmit(&hspi3, FlashCommand, 1, 500);
43 // HAL_SPI_Receive(&hspi3, &FlashStatus, 1, 500);
44 FLASH_CS_RESET;
45 WAIT(5);
46 return FlashStatus;
47}
48
49void Flash_StatusRDY (void)
50{
51 uint8_t FlashStatus;
52 FlashCommand[0] = StatusReg;
53 FLASH_CS_SET;
54 // __ASM("nop");
55 spiTransmit( FlashCommand, 1);
56 //HAL_SPI_Transmit(&hspi3, FlashCommand, 1, 500);
57 do{
58 spiReceive(&FlashStatus, 1);
59 //HAL_SPI_Receive(&hspi3, &FlashStatus, 1, 500);
60 }while(!(FlashStatus & 0x80));
61 FLASH_CS_RESET;
62 WAIT(5);
63}
64
65void Flash_SetPage512(void)
66{
67 FlashCommand[0] = 0x3D;
68 FlashCommand[1] = 0x2A;
69 FlashCommand[2] = 0x80;
70 FlashCommand[3] = 0xA6;
71 FLASH_CS_SET;
72 //__ASM("nop");
73 spiTransmit(FlashCommand, 4);
74 // HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
75 FLASH_CS_RESET;
76 WAIT(5);
77 Flash_StatusRDY();
78}
79
80void Flash_FullErase(void)
81{
82 FlashCommand[0] = 0xC7;
83 FlashCommand[1] = 0x94;
84 FlashCommand[2] = 0x80;
85 FlashCommand[3] = 0x9A;
86 FLASH_CS_SET;
87 //__ASM("nop");
88 spiTransmit(FlashCommand, 4);
89 //HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
90 FLASH_CS_RESET;
91 WAIT(5);
92 Flash_StatusRDY();
93}
94
95void Flash_ByteWrite(uint32_t bADDR, uint16_t num, uint8_t *TXdata)
96{
97 uint32_t Pg_ADDR,Byte_ADDR ;
98 Pg_ADDR = bADDR & 0x3FFE00 ;
99 Byte_ADDR = bADDR & 0x0001FF ;
100 Flash_StatusRDY();
101 FlashCommand[0] = 0x53;
102 FlashCommand[1] = (uint8_t)(Pg_ADDR>>16);
103 FlashCommand[2] = (uint8_t)(Pg_ADDR>>8);
104 FlashCommand[3] = (uint8_t)(Pg_ADDR);
105 FLASH_CS_SET;
106 //__ASM("nop");
107 spiTransmit(FlashCommand, 4);
108 //HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
109 FLASH_CS_RESET;
110 WAIT(5);
111 Flash_StatusRDY();
112 FlashCommand[0] = 0x84;
113 FlashCommand[1] = (uint8_t)(Byte_ADDR>>16);
114 FlashCommand[2] = (uint8_t)(Byte_ADDR>>8);
115 FlashCommand[3] = (uint8_t)(Byte_ADDR);
116 FLASH_CS_SET;
117 // __ASM("nop");
118 spiTransmit(FlashCommand, 4);
119 spiTransmit(TXdata, num);
120 //HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
121 //HAL_SPI_Transmit(&hspi3, TXdata, num, 5000);
122 FLASH_CS_RESET;
123 WAIT(5);
124 Flash_StatusRDY();
125 FlashCommand[0] = 0x83;
126 FlashCommand[1] = (uint8_t)(Pg_ADDR>>16);
127 FlashCommand[2] = (uint8_t)(Pg_ADDR>>8);
128 FlashCommand[3] = (uint8_t)(Pg_ADDR);
129 FLASH_CS_SET;
130 //__ASM("nop");
131 spiTransmit(FlashCommand, 4);
132 //HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
133 FLASH_CS_RESET;
134 WAIT(5);
135}
136
137void Flash_Read(uint32_t bADDR, uint16_t num, uint8_t *RXdata)
138{
139 Flash_StatusRDY();
140 FlashCommand[0] = 0xE8;
141 FlashCommand[1] = (uint8_t)(bADDR>>16);
142 FlashCommand[2] = (uint8_t)(bADDR>>8);
143 FlashCommand[3] = (uint8_t)(bADDR);
144 FlashCommand[4] = 0x00;
145 FlashCommand[5] = 0x00;
146 FlashCommand[6] = 0x00;
147 FlashCommand[7] = 0x00;
148 FLASH_CS_SET;
149 //__ASM("nop");
150 spiTransmit(FlashCommand, 8);
151 spiReceive(RXdata, num);
152 //HAL_SPI_Transmit(&hspi3, FlashCommand, 8, 500);
153 // HAL_SPI_Receive(&hspi3, RXdata, num, 5000);
154 FLASH_CS_RESET;
155 WAIT(5);
156}
157
158void Flash_PageErase(uint16_t page) // page 0 - 8191
159{
160 uint32_t Pg_ADDR = 0x00000000;
161 Pg_ADDR = (page << 9);
162 FlashCommand[0] = 0x81;
163 FlashCommand[1] = (uint8_t)(Pg_ADDR>>16);
164 FlashCommand[2] = (uint8_t)(Pg_ADDR>>8);
165 FlashCommand[3] = (uint8_t)(Pg_ADDR);
166 FLASH_CS_SET;
167 //__ASM("nop");
168 spiTransmit(FlashCommand, 4);
169 //HAL_SPI_Transmit(&hspi3, FlashCommand, 4, 500);
170 FLASH_CS_RESET;
171 WAIT(5);
172 Flash_StatusRDY();
173}
174
175void Flash_Read_ID(uint8_t *ID)
176{
177 Flash_StatusRDY();
178 FlashCommand[0] = 0x9F;
179 FLASH_CS_SET;
180 // __ASM("nop");
181 spiTransmit(FlashCommand, 1);
182 spiReceive(ID, 4);
183 //HAL_SPI_Transmit(&hspi3, FlashCommand, 1, 500);
184 //HAL_SPI_Receive(&hspi3, ID, 4, 500);
185 FLASH_CS_RESET;
186 WAIT(5);
187}
188
189
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