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