E3 Designers / ButtonCtrl

Release 1.01

SPI_MX25R.cpp@2:1d5204d29bc5, 2019-09-17 (annotated)

Committer:
foxbrianr
Date:
Tue Sep 17 13:48:28 2019 +0000
Revision:
2:1d5204d29bc5
Parent:
1:86f6ebbe4fd1 
Beta 2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
foxbrianr 2:1d5204d29bc5 1 /**************************************************************************//**
foxbrianr 2:1d5204d29bc5 2 * @file SPI_MX25R.cpp
foxbrianr 2:1d5204d29bc5 3 * @brief Base class for wrapping the interface with the SPI NOR Flash.
foxbrianr 2:1d5204d29bc5 4 * @version: V1.0
foxbrianr 2:1d5204d29bc5 5 * @date: 9/17/2019
foxbrianr 2:1d5204d29bc5 6 *
foxbrianr 2:1d5204d29bc5 7 * @note
foxbrianr 1:86f6ebbe4fd1 8 * SPI_MX25R Series SPI-Flash Memory
foxbrianr 1:86f6ebbe4fd1 9 * Macronix Low Power Serial NOR Flash
foxbrianr 1:86f6ebbe4fd1 10 * (x2, and x4 I/O modes not implemented)
foxbrianr 2:1d5204d29bc5 11 *
foxbrianr 2:1d5204d29bc5 12 *
foxbrianr 2:1d5204d29bc5 13 * @note
foxbrianr 2:1d5204d29bc5 14 * Copyright (C) 2019 E3 Design. All rights reserved.
foxbrianr 2:1d5204d29bc5 15 *
foxbrianr 2:1d5204d29bc5 16 * @par
foxbrianr 2:1d5204d29bc5 17 * E3 Designers LLC is supplying this software for use with Cortex-M3 LPC1768
foxbrianr 2:1d5204d29bc5 18 * processor based microcontroller for the ESCM 2000 Monitor and Display.
foxbrianr 2:1d5204d29bc5 19 * *
foxbrianr 2:1d5204d29bc5 20 * @par
foxbrianr 2:1d5204d29bc5 21 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
foxbrianr 2:1d5204d29bc5 22 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
foxbrianr 2:1d5204d29bc5 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
foxbrianr 2:1d5204d29bc5 24 * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
foxbrianr 2:1d5204d29bc5 25 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
foxbrianr 2:1d5204d29bc5 26 *
foxbrianr 2:1d5204d29bc5 27 ******************************************************************************/
foxbrianr 2:1d5204d29bc5 28
foxbrianr 1:86f6ebbe4fd1 29
foxbrianr 1:86f6ebbe4fd1 30 #include "SPI_MX25R.h"
foxbrianr 1:86f6ebbe4fd1 31
foxbrianr 1:86f6ebbe4fd1 32
foxbrianr 1:86f6ebbe4fd1 33 SPI_MX25R::SPI_MX25R(PinName mosi, PinName miso, PinName sclk, PinName cs) :
foxbrianr 1:86f6ebbe4fd1 34 m_spi(mosi, miso, sclk), m_cs(cs) { }
foxbrianr 1:86f6ebbe4fd1 35
foxbrianr 1:86f6ebbe4fd1 36 SPI_MX25R::~SPI_MX25R() { }
foxbrianr 1:86f6ebbe4fd1 37
foxbrianr 1:86f6ebbe4fd1 38 void SPI_MX25R::writeEnable(void)
foxbrianr 1:86f6ebbe4fd1 39 {
foxbrianr 1:86f6ebbe4fd1 40 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 41 m_spi.write(CMD_WREN) ;
foxbrianr 1:86f6ebbe4fd1 42 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 43 }
foxbrianr 1:86f6ebbe4fd1 44
foxbrianr 1:86f6ebbe4fd1 45 void SPI_MX25R::writeDisable(void)
foxbrianr 1:86f6ebbe4fd1 46 {
foxbrianr 1:86f6ebbe4fd1 47 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 48 m_spi.write(CMD_WRDI) ;
foxbrianr 1:86f6ebbe4fd1 49 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 50 }
foxbrianr 1:86f6ebbe4fd1 51
foxbrianr 1:86f6ebbe4fd1 52 void SPI_MX25R::resetEnable(void)
foxbrianr 1:86f6ebbe4fd1 53 {
foxbrianr 1:86f6ebbe4fd1 54 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 55 m_spi.write(CMD_RSTEN) ;
foxbrianr 1:86f6ebbe4fd1 56 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 57 }
foxbrianr 1:86f6ebbe4fd1 58
foxbrianr 1:86f6ebbe4fd1 59 void SPI_MX25R::reset(void)
foxbrianr 1:86f6ebbe4fd1 60 {
foxbrianr 1:86f6ebbe4fd1 61 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 62 m_spi.write(CMD_RST) ;
foxbrianr 1:86f6ebbe4fd1 63 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 64 }
foxbrianr 1:86f6ebbe4fd1 65
foxbrianr 1:86f6ebbe4fd1 66 void SPI_MX25R::pgmersSuspend(void)
foxbrianr 1:86f6ebbe4fd1 67 {
foxbrianr 1:86f6ebbe4fd1 68 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 69 m_spi.write(CMD_PESUS) ;
foxbrianr 1:86f6ebbe4fd1 70 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 71 }
foxbrianr 1:86f6ebbe4fd1 72
foxbrianr 1:86f6ebbe4fd1 73 void SPI_MX25R::pgmersResume(void)
foxbrianr 1:86f6ebbe4fd1 74 {
foxbrianr 1:86f6ebbe4fd1 75 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 76 m_spi.write(CMD_PERES) ;
foxbrianr 1:86f6ebbe4fd1 77 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 78 }
foxbrianr 1:86f6ebbe4fd1 79
foxbrianr 1:86f6ebbe4fd1 80 void SPI_MX25R::deepPowerdown(void)
foxbrianr 1:86f6ebbe4fd1 81 {
foxbrianr 1:86f6ebbe4fd1 82 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 83 m_spi.write(CMD_DP) ;
foxbrianr 1:86f6ebbe4fd1 84 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 85 }
foxbrianr 1:86f6ebbe4fd1 86
foxbrianr 1:86f6ebbe4fd1 87 void SPI_MX25R::setBurstlength(void)
foxbrianr 1:86f6ebbe4fd1 88 {
foxbrianr 1:86f6ebbe4fd1 89 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 90 m_spi.write(CMD_SBL) ;
foxbrianr 1:86f6ebbe4fd1 91 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 92 }
foxbrianr 1:86f6ebbe4fd1 93
foxbrianr 1:86f6ebbe4fd1 94 void SPI_MX25R::releaseReadenhaced(void)
foxbrianr 1:86f6ebbe4fd1 95 {
foxbrianr 1:86f6ebbe4fd1 96 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 97 m_spi.write(CMD_RRE) ;
foxbrianr 1:86f6ebbe4fd1 98 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 99 }
foxbrianr 1:86f6ebbe4fd1 100
foxbrianr 1:86f6ebbe4fd1 101 void SPI_MX25R::noOperation(void)
foxbrianr 1:86f6ebbe4fd1 102 {
foxbrianr 1:86f6ebbe4fd1 103 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 104 m_spi.write(CMD_NOP) ;
foxbrianr 1:86f6ebbe4fd1 105 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 106 }
foxbrianr 1:86f6ebbe4fd1 107
foxbrianr 1:86f6ebbe4fd1 108 void SPI_MX25R::enterSecureOTP(void)
foxbrianr 1:86f6ebbe4fd1 109 {
foxbrianr 1:86f6ebbe4fd1 110 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 111 m_spi.write(CMD_ENSO) ;
foxbrianr 1:86f6ebbe4fd1 112 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 113 }
foxbrianr 1:86f6ebbe4fd1 114
foxbrianr 1:86f6ebbe4fd1 115 void SPI_MX25R::exitSecureOTP(void)
foxbrianr 1:86f6ebbe4fd1 116 {
foxbrianr 1:86f6ebbe4fd1 117 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 118 m_spi.write(CMD_EXSO) ;
foxbrianr 1:86f6ebbe4fd1 119 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 120 }
foxbrianr 1:86f6ebbe4fd1 121
foxbrianr 1:86f6ebbe4fd1 122 uint8_t SPI_MX25R::readStatus(void)
foxbrianr 1:86f6ebbe4fd1 123 {
foxbrianr 1:86f6ebbe4fd1 124 uint8_t data ;
foxbrianr 1:86f6ebbe4fd1 125 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 126 m_spi.write(CMD_RDSR) ;
foxbrianr 1:86f6ebbe4fd1 127 data = m_spi.write(DUMMY) ; // dummy
foxbrianr 1:86f6ebbe4fd1 128 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 129 return( data ) ;
foxbrianr 1:86f6ebbe4fd1 130 }
foxbrianr 1:86f6ebbe4fd1 131
foxbrianr 1:86f6ebbe4fd1 132 uint32_t SPI_MX25R::readConfig(void)
foxbrianr 1:86f6ebbe4fd1 133 {
foxbrianr 1:86f6ebbe4fd1 134 uint8_t data;
foxbrianr 1:86f6ebbe4fd1 135 uint32_t config32 = 0 ;
foxbrianr 1:86f6ebbe4fd1 136 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 137 m_spi.write(CMD_RDCR) ; // send 15h
foxbrianr 1:86f6ebbe4fd1 138 data= m_spi.write(DUMMY) ; // dumy to get 1st Byte out
foxbrianr 1:86f6ebbe4fd1 139 config32 = config32 | data ; // put in 32b reg
foxbrianr 1:86f6ebbe4fd1 140 data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte out
foxbrianr 1:86f6ebbe4fd1 141 config32 = (config32 << 8) | data ; // shift and put in reg
foxbrianr 1:86f6ebbe4fd1 142 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 143 return( config32 ) ;
foxbrianr 1:86f6ebbe4fd1 144 }
foxbrianr 1:86f6ebbe4fd1 145
foxbrianr 1:86f6ebbe4fd1 146 uint8_t SPI_MX25R::readSecurity(void)
foxbrianr 1:86f6ebbe4fd1 147 {
foxbrianr 1:86f6ebbe4fd1 148 uint8_t data ;
foxbrianr 1:86f6ebbe4fd1 149 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 150 m_spi.write(CMD_RDSCUR) ; // send 2Bh
foxbrianr 1:86f6ebbe4fd1 151 data = m_spi.write(DUMMY) ; // dummy
foxbrianr 1:86f6ebbe4fd1 152 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 153 return( data ) ;
foxbrianr 1:86f6ebbe4fd1 154 }
foxbrianr 1:86f6ebbe4fd1 155
foxbrianr 1:86f6ebbe4fd1 156 uint32_t SPI_MX25R::readID(void)
foxbrianr 1:86f6ebbe4fd1 157 {
foxbrianr 1:86f6ebbe4fd1 158 uint8_t data;
foxbrianr 1:86f6ebbe4fd1 159 uint32_t data32 = 0 ;
foxbrianr 1:86f6ebbe4fd1 160 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 161 m_spi.write(CMD_RDID) ; // send 9Fh
foxbrianr 1:86f6ebbe4fd1 162 data= m_spi.write(DUMMY) ; // dumy to get 1st Byte out
foxbrianr 1:86f6ebbe4fd1 163 data32 = data32 | data ; // put in 32b reg
foxbrianr 1:86f6ebbe4fd1 164 data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte out
foxbrianr 1:86f6ebbe4fd1 165 data32 = (data32 << 8) | data ; // shift and put in reg
foxbrianr 1:86f6ebbe4fd1 166 data= m_spi.write(DUMMY) ; // dummy to get 3rd Byte out
foxbrianr 1:86f6ebbe4fd1 167 data32 = (data32 << 8) | data ; // shift again and put in reg
foxbrianr 1:86f6ebbe4fd1 168 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 169 return( data32 ) ;
foxbrianr 1:86f6ebbe4fd1 170 }
foxbrianr 1:86f6ebbe4fd1 171
foxbrianr 1:86f6ebbe4fd1 172 uint32_t SPI_MX25R::readREMS(void)
foxbrianr 1:86f6ebbe4fd1 173 {
foxbrianr 1:86f6ebbe4fd1 174 uint8_t data;
foxbrianr 1:86f6ebbe4fd1 175 uint32_t data32 = 0 ;
foxbrianr 1:86f6ebbe4fd1 176 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 177 m_spi.write(CMD_REMS) ; // send 90h
foxbrianr 1:86f6ebbe4fd1 178 m_spi.write(DUMMY) ; // send DUMMY1
foxbrianr 1:86f6ebbe4fd1 179 m_spi.write(DUMMY) ; // send DUMMY2
foxbrianr 1:86f6ebbe4fd1 180 m_spi.write(0) ; // send address=0x00 to get Manu ID 1st.
foxbrianr 1:86f6ebbe4fd1 181 data= m_spi.write(DUMMY) ; // dumy to get Manufacturer ID= C2h out
foxbrianr 1:86f6ebbe4fd1 182 data32 = data32 | data ; // put in 32b reg
foxbrianr 1:86f6ebbe4fd1 183 data= m_spi.write(DUMMY) ; // dummy to get 2nd Byte = Device ID out
foxbrianr 1:86f6ebbe4fd1 184 data32 = (data32 << 8) | data ; // shift and put in reg
foxbrianr 1:86f6ebbe4fd1 185 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 186 return( data32 ) ;
foxbrianr 1:86f6ebbe4fd1 187 }
foxbrianr 1:86f6ebbe4fd1 188
foxbrianr 1:86f6ebbe4fd1 189 uint8_t SPI_MX25R::readRES(void)
foxbrianr 1:86f6ebbe4fd1 190 {
foxbrianr 1:86f6ebbe4fd1 191 uint8_t data;
foxbrianr 1:86f6ebbe4fd1 192 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 193 m_spi.write(CMD_RES) ; // send ABh
foxbrianr 1:86f6ebbe4fd1 194 m_spi.write(DUMMY) ; // send DUMMY1
foxbrianr 1:86f6ebbe4fd1 195 m_spi.write(DUMMY) ; // send DUMMY2
foxbrianr 1:86f6ebbe4fd1 196 m_spi.write(DUMMY) ; // send DUMMY3
foxbrianr 1:86f6ebbe4fd1 197 data= m_spi.write(DUMMY) ; // dumy to get Electronic Sig. out
foxbrianr 1:86f6ebbe4fd1 198 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 199 return( data ) ;
foxbrianr 1:86f6ebbe4fd1 200 }
foxbrianr 1:86f6ebbe4fd1 201
foxbrianr 1:86f6ebbe4fd1 202 void SPI_MX25R::programPage(int addr, uint8_t *data, int numData)
foxbrianr 1:86f6ebbe4fd1 203 {
foxbrianr 1:86f6ebbe4fd1 204 int i ;
foxbrianr 1:86f6ebbe4fd1 205 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 206 m_spi.write(CMD_PP) ; // Program Page 02h
foxbrianr 1:86f6ebbe4fd1 207 m_spi.write((addr >> 16)&0xFF) ; // adr 23:16
foxbrianr 1:86f6ebbe4fd1 208 m_spi.write((addr >> 8)&0xFF) ; // adr 15:8
foxbrianr 1:86f6ebbe4fd1 209 m_spi.write(addr & 0xFF) ; // adr 7:0
foxbrianr 1:86f6ebbe4fd1 210 for (i = 0 ; i < numData ; i++ ) { // data = 00, 01, 02, .. to FEh, FFh = all 256 Bytes in 1 page.
foxbrianr 1:86f6ebbe4fd1 211 m_spi.write(data[i]) ;
foxbrianr 1:86f6ebbe4fd1 212 }
foxbrianr 1:86f6ebbe4fd1 213 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 214 // poll in main
foxbrianr 1:86f6ebbe4fd1 215 }
foxbrianr 1:86f6ebbe4fd1 216
foxbrianr 1:86f6ebbe4fd1 217 void SPI_MX25R::writeStatusreg(int addr) // Write SR cmd 01h + 3B data
foxbrianr 1:86f6ebbe4fd1 218 {
foxbrianr 1:86f6ebbe4fd1 219 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 220 m_spi.write(CMD_WRSR) ; // Write SR cmd 01h
foxbrianr 1:86f6ebbe4fd1 221 m_spi.write((addr >> 16)&0xFF) ; // address
foxbrianr 1:86f6ebbe4fd1 222 m_spi.write((addr >> 8)&0xFF) ;
foxbrianr 1:86f6ebbe4fd1 223 m_spi.write(addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 224 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 225 }
foxbrianr 1:86f6ebbe4fd1 226
foxbrianr 1:86f6ebbe4fd1 227 void SPI_MX25R::writeSecurityreg(int addr) // WRSCUR cmd 2Fh + 1B data
foxbrianr 1:86f6ebbe4fd1 228 {
foxbrianr 1:86f6ebbe4fd1 229 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 230 m_spi.write(CMD_WRSCUR) ; // Write SR cmd 01h
foxbrianr 1:86f6ebbe4fd1 231 m_spi.write(addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 232 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 233 }
foxbrianr 1:86f6ebbe4fd1 234
foxbrianr 1:86f6ebbe4fd1 235 void SPI_MX25R::blockErase(int addr) // 64KB Block Erase
foxbrianr 1:86f6ebbe4fd1 236 {
foxbrianr 1:86f6ebbe4fd1 237 uint8_t data[3] ;
foxbrianr 1:86f6ebbe4fd1 238 data[0] = (addr >> 16) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 239 data[1] = (addr >> 8) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 240 data[2] = (addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 241 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 242 m_spi.write(CMD_BE) ;
foxbrianr 1:86f6ebbe4fd1 243 for (int i = 0 ; i < 3 ; i++ ) { // Address setting
foxbrianr 1:86f6ebbe4fd1 244 m_spi.write(data[i]) ;
foxbrianr 1:86f6ebbe4fd1 245 }
foxbrianr 1:86f6ebbe4fd1 246 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 247 // poll in main
foxbrianr 1:86f6ebbe4fd1 248 }
foxbrianr 1:86f6ebbe4fd1 249
foxbrianr 1:86f6ebbe4fd1 250 void SPI_MX25R::blockErase32KB(int addr) // 32KB Block Erase
foxbrianr 1:86f6ebbe4fd1 251 {
foxbrianr 1:86f6ebbe4fd1 252 uint8_t data[3] ;
foxbrianr 1:86f6ebbe4fd1 253 data[0] = (addr >> 16) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 254 data[1] = (addr >> 8) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 255 data[2] = (addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 256 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 257 m_spi.write(CMD_32KBE) ;
foxbrianr 1:86f6ebbe4fd1 258 for (int i = 0 ; i < 3 ; i++ ) { // Address Setting
foxbrianr 1:86f6ebbe4fd1 259 m_spi.write(data[i]) ;
foxbrianr 1:86f6ebbe4fd1 260 }
foxbrianr 1:86f6ebbe4fd1 261 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 262 // poll in main
foxbrianr 1:86f6ebbe4fd1 263 }
foxbrianr 1:86f6ebbe4fd1 264
foxbrianr 1:86f6ebbe4fd1 265 void SPI_MX25R::sectorErase(int addr) // 4KB Sector Erase
foxbrianr 1:86f6ebbe4fd1 266 {
foxbrianr 1:86f6ebbe4fd1 267 uint8_t data[3] ;
foxbrianr 1:86f6ebbe4fd1 268 data[0] = (addr >> 16) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 269 data[1] = (addr >> 8) & 0xFF ;
foxbrianr 1:86f6ebbe4fd1 270 data[2] = (addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 271 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 272 m_spi.write(CMD_SE) ;
foxbrianr 1:86f6ebbe4fd1 273 for (int i = 0 ; i < 3 ; i++ ) { // Address Setting
foxbrianr 1:86f6ebbe4fd1 274 m_spi.write(data[i]) ;
foxbrianr 1:86f6ebbe4fd1 275 }
foxbrianr 1:86f6ebbe4fd1 276 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 277 // poll in main
foxbrianr 1:86f6ebbe4fd1 278 }
foxbrianr 1:86f6ebbe4fd1 279
foxbrianr 1:86f6ebbe4fd1 280 void SPI_MX25R::chipErase(void) // Chip Erase
foxbrianr 1:86f6ebbe4fd1 281 {
foxbrianr 1:86f6ebbe4fd1 282 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 283 m_spi.write(CMD_CE) ;
foxbrianr 1:86f6ebbe4fd1 284 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 285 // poll in main
foxbrianr 1:86f6ebbe4fd1 286 }
foxbrianr 1:86f6ebbe4fd1 287
foxbrianr 1:86f6ebbe4fd1 288 uint8_t SPI_MX25R::read8(int addr) // Single Byte Read
foxbrianr 1:86f6ebbe4fd1 289 {
foxbrianr 1:86f6ebbe4fd1 290 uint8_t data ;
foxbrianr 1:86f6ebbe4fd1 291 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 292 m_spi.write(CMD_READ) ; // send 03h
foxbrianr 1:86f6ebbe4fd1 293 m_spi.write((addr >> 16)&0xFF) ;
foxbrianr 1:86f6ebbe4fd1 294 m_spi.write((addr >> 8)&0xFF) ;
foxbrianr 1:86f6ebbe4fd1 295 m_spi.write(addr & 0xFF) ;
foxbrianr 1:86f6ebbe4fd1 296 data = m_spi.write(DUMMY) ; // write data is dummy
foxbrianr 1:86f6ebbe4fd1 297 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 298 return( data ) ; // return 1 byte
foxbrianr 1:86f6ebbe4fd1 299 }
foxbrianr 1:86f6ebbe4fd1 300
foxbrianr 1:86f6ebbe4fd1 301 uint8_t SPI_MX25R::readSFDP(int addr) // Read SFDP
foxbrianr 1:86f6ebbe4fd1 302 {
foxbrianr 1:86f6ebbe4fd1 303 uint8_t data ;
foxbrianr 1:86f6ebbe4fd1 304 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 305 m_spi.write(CMD_RDSFDP) ; // send cmd 5Ah
foxbrianr 1:86f6ebbe4fd1 306 m_spi.write((addr >> 16)&0xFF) ; // address[23:16]
foxbrianr 1:86f6ebbe4fd1 307 m_spi.write((addr >> 8)&0xFF) ; // address[15:8]
foxbrianr 1:86f6ebbe4fd1 308 m_spi.write(addr & 0xFF) ; // address[7:0]
foxbrianr 1:86f6ebbe4fd1 309 m_spi.write(DUMMY) ; // dummy cycle
foxbrianr 1:86f6ebbe4fd1 310 data = m_spi.write(DUMMY) ; // return 1 byte
foxbrianr 1:86f6ebbe4fd1 311 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 312 return( data ) ;
foxbrianr 1:86f6ebbe4fd1 313 }
foxbrianr 1:86f6ebbe4fd1 314
foxbrianr 1:86f6ebbe4fd1 315 uint8_t SPI_MX25R::readFREAD(int addr) // x1 Fast Read Data Byte
foxbrianr 1:86f6ebbe4fd1 316 {
foxbrianr 1:86f6ebbe4fd1 317 uint8_t data ;
foxbrianr 1:86f6ebbe4fd1 318 m_cs = CS_LOW ;
foxbrianr 1:86f6ebbe4fd1 319 m_spi.write(CMD_FREAD) ; // send cmd 0BH
foxbrianr 1:86f6ebbe4fd1 320 m_spi.write((addr >> 16)&0xFF) ; // address[23:16]
foxbrianr 1:86f6ebbe4fd1 321 m_spi.write((addr >> 8)&0xFF) ; // address[15:8]
foxbrianr 1:86f6ebbe4fd1 322 m_spi.write(addr & 0xFF) ; // address[7:0]
foxbrianr 1:86f6ebbe4fd1 323 m_spi.write(DUMMY) ; // dummy cycle
foxbrianr 1:86f6ebbe4fd1 324 data = m_spi.write(DUMMY) ; // return 1 byte
foxbrianr 1:86f6ebbe4fd1 325 m_cs = CS_HIGH ;
foxbrianr 1:86f6ebbe4fd1 326 return( data ) ;
foxbrianr 1:86f6ebbe4fd1 327 }
foxbrianr 1:86f6ebbe4fd1 328