MX25R6435F Library
Dependents: Demo_MX25Rxx35F_Serial_NOR_Flash_Testbench mbed-lorawan-pulga mbed-lorawan-pulga-serial_rx mbed-lorawan-pulga-gps-added_shared
Fork of SPI_MX25R by
SPI_MX25R.cpp@3:b6bb8d236251, 2018-03-28 (annotated)
- Committer:
- Arkadi
- Date:
- Wed Mar 28 13:17:02 2018 +0000
- Revision:
- 3:b6bb8d236251
- Parent:
- 2:f72110475fec
Modified for page read, n bytes read
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
alec1 | 0:a16ad6f5c788 | 1 | /* |
alec1 | 2:f72110475fec | 2 | * SPI_MX25R Series SPI-Flash Memory |
alec1 | 1:8403da5975cb | 3 | * Macronix Low Power Serial NOR Flash |
alec1 | 1:8403da5975cb | 4 | * (x2, and x4 I/O modes not implemented) |
alec1 | 0:a16ad6f5c788 | 5 | */ |
alec1 | 0:a16ad6f5c788 | 6 | |
alec1 | 0:a16ad6f5c788 | 7 | #include "SPI_MX25R.h" |
alec1 | 0:a16ad6f5c788 | 8 | |
alec1 | 1:8403da5975cb | 9 | |
alec1 | 0:a16ad6f5c788 | 10 | SPI_MX25R::SPI_MX25R(PinName mosi, PinName miso, PinName sclk, PinName cs) : |
alec1 | 0:a16ad6f5c788 | 11 | m_spi(mosi, miso, sclk), m_cs(cs) { } |
alec1 | 2:f72110475fec | 12 | |
alec1 | 0:a16ad6f5c788 | 13 | SPI_MX25R::~SPI_MX25R() { } |
alec1 | 2:f72110475fec | 14 | |
alec1 | 0:a16ad6f5c788 | 15 | void SPI_MX25R::writeEnable(void) |
alec1 | 0:a16ad6f5c788 | 16 | { |
alec1 | 2:f72110475fec | 17 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 18 | m_spi.write(CMD_WREN) ; |
alec1 | 2:f72110475fec | 19 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 20 | } |
alec1 | 2:f72110475fec | 21 | |
alec1 | 0:a16ad6f5c788 | 22 | void SPI_MX25R::writeDisable(void) |
alec1 | 0:a16ad6f5c788 | 23 | { |
alec1 | 2:f72110475fec | 24 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 25 | m_spi.write(CMD_WRDI) ; |
alec1 | 2:f72110475fec | 26 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 27 | } |
alec1 | 2:f72110475fec | 28 | |
alec1 | 0:a16ad6f5c788 | 29 | void SPI_MX25R::resetEnable(void) |
alec1 | 0:a16ad6f5c788 | 30 | { |
alec1 | 2:f72110475fec | 31 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 32 | m_spi.write(CMD_RSTEN) ; |
alec1 | 2:f72110475fec | 33 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 34 | } |
alec1 | 2:f72110475fec | 35 | |
alec1 | 0:a16ad6f5c788 | 36 | void SPI_MX25R::reset(void) |
alec1 | 0:a16ad6f5c788 | 37 | { |
alec1 | 2:f72110475fec | 38 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 39 | m_spi.write(CMD_RST) ; |
alec1 | 2:f72110475fec | 40 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 41 | } |
alec1 | 2:f72110475fec | 42 | |
alec1 | 1:8403da5975cb | 43 | void SPI_MX25R::pgmersSuspend(void) |
alec1 | 1:8403da5975cb | 44 | { |
alec1 | 2:f72110475fec | 45 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 46 | m_spi.write(CMD_PESUS) ; |
alec1 | 2:f72110475fec | 47 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 48 | } |
alec1 | 2:f72110475fec | 49 | |
alec1 | 1:8403da5975cb | 50 | void SPI_MX25R::pgmersResume(void) |
alec1 | 1:8403da5975cb | 51 | { |
alec1 | 2:f72110475fec | 52 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 53 | m_spi.write(CMD_PERES) ; |
alec1 | 2:f72110475fec | 54 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 55 | } |
alec1 | 2:f72110475fec | 56 | |
alec1 | 1:8403da5975cb | 57 | void SPI_MX25R::deepPowerdown(void) |
alec1 | 1:8403da5975cb | 58 | { |
alec1 | 2:f72110475fec | 59 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 60 | m_spi.write(CMD_DP) ; |
alec1 | 2:f72110475fec | 61 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 62 | } |
alec1 | 2:f72110475fec | 63 | |
alec1 | 1:8403da5975cb | 64 | void SPI_MX25R::setBurstlength(void) |
alec1 | 1:8403da5975cb | 65 | { |
alec1 | 2:f72110475fec | 66 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 67 | m_spi.write(CMD_SBL) ; |
alec1 | 2:f72110475fec | 68 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 69 | } |
alec1 | 2:f72110475fec | 70 | |
alec1 | 1:8403da5975cb | 71 | void SPI_MX25R::releaseReadenhaced(void) |
alec1 | 1:8403da5975cb | 72 | { |
alec1 | 2:f72110475fec | 73 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 74 | m_spi.write(CMD_RRE) ; |
alec1 | 2:f72110475fec | 75 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 76 | } |
alec1 | 2:f72110475fec | 77 | |
alec1 | 1:8403da5975cb | 78 | void SPI_MX25R::noOperation(void) |
alec1 | 1:8403da5975cb | 79 | { |
alec1 | 2:f72110475fec | 80 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 81 | m_spi.write(CMD_NOP) ; |
alec1 | 2:f72110475fec | 82 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 83 | } |
alec1 | 2:f72110475fec | 84 | |
alec1 | 1:8403da5975cb | 85 | void SPI_MX25R::enterSecureOTP(void) |
alec1 | 1:8403da5975cb | 86 | { |
alec1 | 2:f72110475fec | 87 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 88 | m_spi.write(CMD_ENSO) ; |
alec1 | 2:f72110475fec | 89 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 90 | } |
alec1 | 1:8403da5975cb | 91 | |
alec1 | 1:8403da5975cb | 92 | void SPI_MX25R::exitSecureOTP(void) |
alec1 | 1:8403da5975cb | 93 | { |
alec1 | 2:f72110475fec | 94 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 95 | m_spi.write(CMD_EXSO) ; |
alec1 | 2:f72110475fec | 96 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 97 | } |
alec1 | 2:f72110475fec | 98 | |
alec1 | 0:a16ad6f5c788 | 99 | uint8_t SPI_MX25R::readStatus(void) |
alec1 | 0:a16ad6f5c788 | 100 | { |
alec1 | 0:a16ad6f5c788 | 101 | uint8_t data ; |
alec1 | 2:f72110475fec | 102 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 103 | m_spi.write(CMD_RDSR) ; |
alec1 | 2:f72110475fec | 104 | data = m_spi.write(DUMMY) ; // dummy |
alec1 | 2:f72110475fec | 105 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 106 | return( data ) ; |
alec1 | 2:f72110475fec | 107 | } |
alec1 | 0:a16ad6f5c788 | 108 | |
alec1 | 0:a16ad6f5c788 | 109 | uint32_t SPI_MX25R::readConfig(void) |
alec1 | 0:a16ad6f5c788 | 110 | { |
alec1 | 0:a16ad6f5c788 | 111 | uint8_t data; |
alec1 | 0:a16ad6f5c788 | 112 | uint32_t config32 = 0 ; |
alec1 | 2:f72110475fec | 113 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 114 | m_spi.write(CMD_RDCR) ; // send 15h |
alec1 | 2:f72110475fec | 115 | data= m_spi.write(DUMMY) ; // dumy to get 1st Byte out |
alec1 | 2:f72110475fec | 116 | config32 = config32 | data ; // put in 32b reg |
alec1 | 2:f72110475fec | 117 | data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte out |
alec1 | 2:f72110475fec | 118 | config32 = (config32 << 8) | data ; // shift and put in reg |
alec1 | 2:f72110475fec | 119 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 120 | return( config32 ) ; |
alec1 | 2:f72110475fec | 121 | } |
alec1 | 2:f72110475fec | 122 | |
alec1 | 2:f72110475fec | 123 | uint8_t SPI_MX25R::readSecurity(void) |
alec1 | 2:f72110475fec | 124 | { |
alec1 | 2:f72110475fec | 125 | uint8_t data ; |
alec1 | 2:f72110475fec | 126 | m_cs = CS_LOW ; |
alec1 | 2:f72110475fec | 127 | m_spi.write(CMD_RDSCUR) ; // send 2Bh |
alec1 | 2:f72110475fec | 128 | data = m_spi.write(DUMMY) ; // dummy |
alec1 | 2:f72110475fec | 129 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 130 | return( data ) ; |
alec1 | 0:a16ad6f5c788 | 131 | } |
alec1 | 0:a16ad6f5c788 | 132 | |
alec1 | 0:a16ad6f5c788 | 133 | uint32_t SPI_MX25R::readID(void) |
alec1 | 0:a16ad6f5c788 | 134 | { |
alec1 | 0:a16ad6f5c788 | 135 | uint8_t data; |
alec1 | 2:f72110475fec | 136 | uint32_t data32 = 0 ; |
alec1 | 2:f72110475fec | 137 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 138 | m_spi.write(CMD_RDID) ; // send 9Fh |
alec1 | 2:f72110475fec | 139 | data= m_spi.write(DUMMY) ; // dumy to get 1st Byte out |
alec1 | 2:f72110475fec | 140 | data32 = data32 | data ; // put in 32b reg |
alec1 | 2:f72110475fec | 141 | data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte out |
alec1 | 2:f72110475fec | 142 | data32 = (data32 << 8) | data ; // shift and put in reg |
alec1 | 2:f72110475fec | 143 | data= m_spi.write(DUMMY) ; // dummy to get 3rd Byte out |
alec1 | 2:f72110475fec | 144 | data32 = (data32 << 8) | data ; // shift again and put in reg |
alec1 | 2:f72110475fec | 145 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 146 | return( data32 ) ; |
alec1 | 0:a16ad6f5c788 | 147 | } |
alec1 | 0:a16ad6f5c788 | 148 | |
alec1 | 2:f72110475fec | 149 | uint32_t SPI_MX25R::readREMS(void) |
alec1 | 2:f72110475fec | 150 | { |
alec1 | 2:f72110475fec | 151 | uint8_t data; |
alec1 | 2:f72110475fec | 152 | uint32_t data32 = 0 ; |
alec1 | 2:f72110475fec | 153 | m_cs = CS_LOW ; |
alec1 | 2:f72110475fec | 154 | m_spi.write(CMD_REMS) ; // send 90h |
alec1 | 2:f72110475fec | 155 | m_spi.write(DUMMY) ; // send DUMMY1 |
alec1 | 2:f72110475fec | 156 | m_spi.write(DUMMY) ; // send DUMMY2 |
alec1 | 2:f72110475fec | 157 | m_spi.write(0) ; // send address=0x00 to get Manu ID 1st. |
alec1 | 2:f72110475fec | 158 | data= m_spi.write(DUMMY) ; // dumy to get Manufacturer ID= C2h out |
alec1 | 2:f72110475fec | 159 | data32 = data32 | data ; // put in 32b reg |
alec1 | 2:f72110475fec | 160 | data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte = Device ID out |
alec1 | 2:f72110475fec | 161 | data32 = (data32 << 8) | data ; // shift and put in reg |
alec1 | 2:f72110475fec | 162 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 163 | return( data32 ) ; |
alec1 | 2:f72110475fec | 164 | } |
alec1 | 2:f72110475fec | 165 | |
alec1 | 2:f72110475fec | 166 | uint8_t SPI_MX25R::readRES(void) |
alec1 | 2:f72110475fec | 167 | { |
alec1 | 2:f72110475fec | 168 | uint8_t data; |
alec1 | 2:f72110475fec | 169 | m_cs = CS_LOW ; |
alec1 | 2:f72110475fec | 170 | m_spi.write(CMD_RES) ; // send ABh |
alec1 | 2:f72110475fec | 171 | m_spi.write(DUMMY) ; // send DUMMY1 |
alec1 | 2:f72110475fec | 172 | m_spi.write(DUMMY) ; // send DUMMY2 |
alec1 | 2:f72110475fec | 173 | m_spi.write(DUMMY) ; // send DUMMY3 |
alec1 | 2:f72110475fec | 174 | data= m_spi.write(DUMMY) ; // dumy to get Electronic Sig. out |
alec1 | 2:f72110475fec | 175 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 176 | return( data ) ; |
alec1 | 2:f72110475fec | 177 | } |
alec1 | 2:f72110475fec | 178 | |
alec1 | 0:a16ad6f5c788 | 179 | void SPI_MX25R::programPage(int addr, uint8_t *data, int numData) |
alec1 | 0:a16ad6f5c788 | 180 | { |
alec1 | 0:a16ad6f5c788 | 181 | int i ; |
alec1 | 2:f72110475fec | 182 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 183 | m_spi.write(CMD_PP) ; // Program Page 02h |
alec1 | 1:8403da5975cb | 184 | m_spi.write((addr >> 16)&0xFF) ; // adr 23:16 |
alec1 | 1:8403da5975cb | 185 | m_spi.write((addr >> 8)&0xFF) ; // adr 15:8 |
alec1 | 1:8403da5975cb | 186 | m_spi.write(addr & 0xFF) ; // adr 7:0 |
alec1 | 1:8403da5975cb | 187 | for (i = 0 ; i < numData ; i++ ) { // data = 00, 01, 02, .. to FEh, FFh = all 256 Bytes in 1 page. |
alec1 | 0:a16ad6f5c788 | 188 | m_spi.write(data[i]) ; |
alec1 | 0:a16ad6f5c788 | 189 | } |
alec1 | 2:f72110475fec | 190 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 191 | // poll in main |
alec1 | 0:a16ad6f5c788 | 192 | } |
alec1 | 2:f72110475fec | 193 | |
alec1 | 1:8403da5975cb | 194 | void SPI_MX25R::writeStatusreg(int addr) // Write SR cmd 01h + 3B data |
alec1 | 1:8403da5975cb | 195 | { |
alec1 | 2:f72110475fec | 196 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 197 | m_spi.write(CMD_WRSR) ; // Write SR cmd 01h |
alec1 | 1:8403da5975cb | 198 | m_spi.write((addr >> 16)&0xFF) ; // address |
alec1 | 1:8403da5975cb | 199 | m_spi.write((addr >> 8)&0xFF) ; |
alec1 | 1:8403da5975cb | 200 | m_spi.write(addr & 0xFF) ; |
alec1 | 2:f72110475fec | 201 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 202 | } |
alec1 | 2:f72110475fec | 203 | |
alec1 | 2:f72110475fec | 204 | void SPI_MX25R::writeSecurityreg(int addr) // WRSCUR cmd 2Fh + 1B data |
alec1 | 2:f72110475fec | 205 | { |
alec1 | 2:f72110475fec | 206 | m_cs = CS_LOW ; |
alec1 | 2:f72110475fec | 207 | m_spi.write(CMD_WRSCUR) ; // Write SR cmd 01h |
alec1 | 2:f72110475fec | 208 | m_spi.write(addr & 0xFF) ; |
alec1 | 2:f72110475fec | 209 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 210 | } |
alec1 | 0:a16ad6f5c788 | 211 | |
alec1 | 1:8403da5975cb | 212 | void SPI_MX25R::blockErase(int addr) // 64KB Block Erase |
alec1 | 0:a16ad6f5c788 | 213 | { |
alec1 | 0:a16ad6f5c788 | 214 | uint8_t data[3] ; |
alec1 | 0:a16ad6f5c788 | 215 | data[0] = (addr >> 16) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 216 | data[1] = (addr >> 8) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 217 | data[2] = (addr & 0xFF) ; |
alec1 | 2:f72110475fec | 218 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 219 | m_spi.write(CMD_BE) ; |
alec1 | 2:f72110475fec | 220 | for (int i = 0 ; i < 3 ; i++ ) { // Address setting |
alec1 | 0:a16ad6f5c788 | 221 | m_spi.write(data[i]) ; |
alec1 | 0:a16ad6f5c788 | 222 | } |
alec1 | 2:f72110475fec | 223 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 224 | // poll in main |
alec1 | 0:a16ad6f5c788 | 225 | } |
alec1 | 2:f72110475fec | 226 | |
alec1 | 1:8403da5975cb | 227 | void SPI_MX25R::blockErase32KB(int addr) // 32KB Block Erase |
alec1 | 0:a16ad6f5c788 | 228 | { |
alec1 | 0:a16ad6f5c788 | 229 | uint8_t data[3] ; |
alec1 | 0:a16ad6f5c788 | 230 | data[0] = (addr >> 16) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 231 | data[1] = (addr >> 8) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 232 | data[2] = (addr & 0xFF) ; |
alec1 | 2:f72110475fec | 233 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 234 | m_spi.write(CMD_32KBE) ; |
alec1 | 2:f72110475fec | 235 | for (int i = 0 ; i < 3 ; i++ ) { // Address Setting |
alec1 | 0:a16ad6f5c788 | 236 | m_spi.write(data[i]) ; |
alec1 | 0:a16ad6f5c788 | 237 | } |
alec1 | 2:f72110475fec | 238 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 239 | // poll in main |
alec1 | 0:a16ad6f5c788 | 240 | } |
alec1 | 2:f72110475fec | 241 | |
alec1 | 1:8403da5975cb | 242 | void SPI_MX25R::sectorErase(int addr) // 4KB Sector Erase |
alec1 | 0:a16ad6f5c788 | 243 | { |
alec1 | 0:a16ad6f5c788 | 244 | uint8_t data[3] ; |
alec1 | 0:a16ad6f5c788 | 245 | data[0] = (addr >> 16) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 246 | data[1] = (addr >> 8) & 0xFF ; |
alec1 | 0:a16ad6f5c788 | 247 | data[2] = (addr & 0xFF) ; |
alec1 | 2:f72110475fec | 248 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 249 | m_spi.write(CMD_SE) ; |
alec1 | 2:f72110475fec | 250 | for (int i = 0 ; i < 3 ; i++ ) { // Address Setting |
alec1 | 0:a16ad6f5c788 | 251 | m_spi.write(data[i]) ; |
alec1 | 0:a16ad6f5c788 | 252 | } |
alec1 | 2:f72110475fec | 253 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 254 | // poll in main |
alec1 | 0:a16ad6f5c788 | 255 | } |
alec1 | 2:f72110475fec | 256 | |
alec1 | 1:8403da5975cb | 257 | void SPI_MX25R::chipErase(void) // Chip Erase |
alec1 | 0:a16ad6f5c788 | 258 | { |
alec1 | 2:f72110475fec | 259 | m_cs = CS_LOW ; |
alec1 | 0:a16ad6f5c788 | 260 | m_spi.write(CMD_CE) ; |
alec1 | 2:f72110475fec | 261 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 262 | // poll in main |
alec1 | 0:a16ad6f5c788 | 263 | } |
alec1 | 2:f72110475fec | 264 | |
alec1 | 1:8403da5975cb | 265 | uint8_t SPI_MX25R::read8(int addr) // Single Byte Read |
alec1 | 0:a16ad6f5c788 | 266 | { |
alec1 | 0:a16ad6f5c788 | 267 | uint8_t data ; |
alec1 | 2:f72110475fec | 268 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 269 | m_spi.write(CMD_READ) ; // send 03h |
alec1 | 0:a16ad6f5c788 | 270 | m_spi.write((addr >> 16)&0xFF) ; |
alec1 | 0:a16ad6f5c788 | 271 | m_spi.write((addr >> 8)&0xFF) ; |
alec1 | 0:a16ad6f5c788 | 272 | m_spi.write(addr & 0xFF) ; |
alec1 | 2:f72110475fec | 273 | data = m_spi.write(DUMMY) ; // write data is dummy |
alec1 | 2:f72110475fec | 274 | m_cs = CS_HIGH ; |
alec1 | 1:8403da5975cb | 275 | return( data ) ; // return 1 byte |
alec1 | 1:8403da5975cb | 276 | } |
alec1 | 2:f72110475fec | 277 | |
alec1 | 2:f72110475fec | 278 | uint8_t SPI_MX25R::readSFDP(int addr) // Read SFDP |
alec1 | 1:8403da5975cb | 279 | { |
alec1 | 1:8403da5975cb | 280 | uint8_t data ; |
alec1 | 2:f72110475fec | 281 | m_cs = CS_LOW ; |
alec1 | 1:8403da5975cb | 282 | m_spi.write(CMD_RDSFDP) ; // send cmd 5Ah |
alec1 | 2:f72110475fec | 283 | m_spi.write((addr >> 16)&0xFF) ; // address[23:16] |
alec1 | 1:8403da5975cb | 284 | m_spi.write((addr >> 8)&0xFF) ; // address[15:8] |
alec1 | 1:8403da5975cb | 285 | m_spi.write(addr & 0xFF) ; // address[7:0] |
alec1 | 2:f72110475fec | 286 | m_spi.write(DUMMY) ; // dummy cycle |
alec1 | 2:f72110475fec | 287 | data = m_spi.write(DUMMY) ; // return 1 byte |
alec1 | 2:f72110475fec | 288 | m_cs = CS_HIGH ; |
alec1 | 2:f72110475fec | 289 | return( data ) ; |
alec1 | 2:f72110475fec | 290 | } |
alec1 | 2:f72110475fec | 291 | |
alec1 | 2:f72110475fec | 292 | uint8_t SPI_MX25R::readFREAD(int addr) // x1 Fast Read Data Byte |
alec1 | 2:f72110475fec | 293 | { |
alec1 | 2:f72110475fec | 294 | uint8_t data ; |
alec1 | 2:f72110475fec | 295 | m_cs = CS_LOW ; |
alec1 | 2:f72110475fec | 296 | m_spi.write(CMD_FREAD) ; // send cmd 0BH |
alec1 | 2:f72110475fec | 297 | m_spi.write((addr >> 16)&0xFF) ; // address[23:16] |
alec1 | 2:f72110475fec | 298 | m_spi.write((addr >> 8)&0xFF) ; // address[15:8] |
alec1 | 2:f72110475fec | 299 | m_spi.write(addr & 0xFF) ; // address[7:0] |
alec1 | 2:f72110475fec | 300 | m_spi.write(DUMMY) ; // dummy cycle |
alec1 | 2:f72110475fec | 301 | data = m_spi.write(DUMMY) ; // return 1 byte |
alec1 | 2:f72110475fec | 302 | m_cs = CS_HIGH ; |
alec1 | 0:a16ad6f5c788 | 303 | return( data ) ; |
alec1 | 0:a16ad6f5c788 | 304 | } |
alec1 | 0:a16ad6f5c788 | 305 | |
Arkadi | 3:b6bb8d236251 | 306 | |
Arkadi | 3:b6bb8d236251 | 307 | void SPI_MX25R::readNBytes(int addr, uint8_t *data, int nBytes) // read sequential n bytes |
Arkadi | 3:b6bb8d236251 | 308 | { |
Arkadi | 3:b6bb8d236251 | 309 | int i; |
Arkadi | 3:b6bb8d236251 | 310 | m_cs = CS_LOW ; |
Arkadi | 3:b6bb8d236251 | 311 | m_spi.write(CMD_READ) ; // send 03h |
Arkadi | 3:b6bb8d236251 | 312 | m_spi.write((addr >> 16)&0xFF) ; |
Arkadi | 3:b6bb8d236251 | 313 | m_spi.write((addr >> 8)&0xFF) ; |
Arkadi | 3:b6bb8d236251 | 314 | m_spi.write(addr & 0xFF) ; |
Arkadi | 3:b6bb8d236251 | 315 | for (i = 0 ; i < nBytes ; i++ ) { // data: sequential data bytes |
Arkadi | 3:b6bb8d236251 | 316 | data[i] = m_spi.write(DUMMY) ; |
Arkadi | 3:b6bb8d236251 | 317 | } |
Arkadi | 3:b6bb8d236251 | 318 | m_cs = CS_HIGH ; |
Arkadi | 3:b6bb8d236251 | 319 | } |