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SPIFBlockDevice.cpp@0:b4f61c49c866, 2018-07-23 (annotated)
- Committer:
- JackB
- Date:
- Mon Jul 23 12:22:51 2018 +0000
- Revision:
- 0:b4f61c49c866
SPIF
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JackB | 0:b4f61c49c866 | 1 | /* mbed Microcontroller Library |
JackB | 0:b4f61c49c866 | 2 | * Copyright (c) 2016 ARM Limited |
JackB | 0:b4f61c49c866 | 3 | * |
JackB | 0:b4f61c49c866 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
JackB | 0:b4f61c49c866 | 5 | * you may not use this file except in compliance with the License. |
JackB | 0:b4f61c49c866 | 6 | * You may obtain a copy of the License at |
JackB | 0:b4f61c49c866 | 7 | * |
JackB | 0:b4f61c49c866 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
JackB | 0:b4f61c49c866 | 9 | * |
JackB | 0:b4f61c49c866 | 10 | * Unless required by applicable law or agreed to in writing, software |
JackB | 0:b4f61c49c866 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
JackB | 0:b4f61c49c866 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
JackB | 0:b4f61c49c866 | 13 | * See the License for the specific language governing permissions and |
JackB | 0:b4f61c49c866 | 14 | * limitations under the License. |
JackB | 0:b4f61c49c866 | 15 | */ |
JackB | 0:b4f61c49c866 | 16 | |
JackB | 0:b4f61c49c866 | 17 | #include "SPIFBlockDevice.h" |
JackB | 0:b4f61c49c866 | 18 | |
JackB | 0:b4f61c49c866 | 19 | |
JackB | 0:b4f61c49c866 | 20 | // Read/write/erase sizes |
JackB | 0:b4f61c49c866 | 21 | #define SPIF_READ_SIZE 1 |
JackB | 0:b4f61c49c866 | 22 | #define SPIF_PROG_SIZE 1 |
JackB | 0:b4f61c49c866 | 23 | #define SPIF_SE_SIZE 4096 |
JackB | 0:b4f61c49c866 | 24 | #define SPIF_TIMEOUT 10000 |
JackB | 0:b4f61c49c866 | 25 | |
JackB | 0:b4f61c49c866 | 26 | // Debug available |
JackB | 0:b4f61c49c866 | 27 | #define SPIF_DEBUG 0 |
JackB | 0:b4f61c49c866 | 28 | |
JackB | 0:b4f61c49c866 | 29 | // MX25R Series Register Command Table. |
JackB | 0:b4f61c49c866 | 30 | enum ops { |
JackB | 0:b4f61c49c866 | 31 | SPIF_NOP = 0x00, // No operation |
JackB | 0:b4f61c49c866 | 32 | SPIF_READ = 0x03, // Read data |
JackB | 0:b4f61c49c866 | 33 | SPIF_PROG = 0x02, // Program data |
JackB | 0:b4f61c49c866 | 34 | SPIF_SE = 0x20, // 4KB Sector Erase |
JackB | 0:b4f61c49c866 | 35 | SPIF_CE = 0xc7, // Chip Erase |
JackB | 0:b4f61c49c866 | 36 | SPIF_SFDP = 0x5a, // Read SFDP |
JackB | 0:b4f61c49c866 | 37 | SPIF_WREN = 0x06, // Write Enable |
JackB | 0:b4f61c49c866 | 38 | SPIF_WRDI = 0x04, // Write Disable |
JackB | 0:b4f61c49c866 | 39 | SPIF_RDSR = 0x05, // Read Status Register |
JackB | 0:b4f61c49c866 | 40 | SPIF_RDID = 0x9f, // Read Manufacturer and JDEC Device ID |
JackB | 0:b4f61c49c866 | 41 | }; |
JackB | 0:b4f61c49c866 | 42 | |
JackB | 0:b4f61c49c866 | 43 | // Status register from RDSR |
JackB | 0:b4f61c49c866 | 44 | // [- stuff -| wel | wip ] |
JackB | 0:b4f61c49c866 | 45 | // [- 6 -| 1 | 1 ] |
JackB | 0:b4f61c49c866 | 46 | #define SPIF_WEL 0x2 |
JackB | 0:b4f61c49c866 | 47 | #define SPIF_WIP 0x1 |
JackB | 0:b4f61c49c866 | 48 | |
JackB | 0:b4f61c49c866 | 49 | |
JackB | 0:b4f61c49c866 | 50 | SPIFBlockDevice::SPIFBlockDevice( |
JackB | 0:b4f61c49c866 | 51 | PinName mosi, PinName miso, PinName sclk, PinName cs, int freq) |
JackB | 0:b4f61c49c866 | 52 | : _spi(mosi, miso, sclk), _cs(cs), _size(0) |
JackB | 0:b4f61c49c866 | 53 | { |
JackB | 0:b4f61c49c866 | 54 | _cs = 1; |
JackB | 0:b4f61c49c866 | 55 | _spi.frequency(freq); |
JackB | 0:b4f61c49c866 | 56 | } |
JackB | 0:b4f61c49c866 | 57 | |
JackB | 0:b4f61c49c866 | 58 | int SPIFBlockDevice::init() |
JackB | 0:b4f61c49c866 | 59 | { |
JackB | 0:b4f61c49c866 | 60 | // Check for vendor specific hacks, these should move into more general |
JackB | 0:b4f61c49c866 | 61 | // handling when possible. RDID is not used to verify a device is attached. |
JackB | 0:b4f61c49c866 | 62 | uint8_t id[3]; |
JackB | 0:b4f61c49c866 | 63 | _cmdread(SPIF_RDID, 0, 3, 0x0, id); |
JackB | 0:b4f61c49c866 | 64 | |
JackB | 0:b4f61c49c866 | 65 | switch (id[0]) { |
JackB | 0:b4f61c49c866 | 66 | case 0xbf: |
JackB | 0:b4f61c49c866 | 67 | // SST devices come preset with block protection |
JackB | 0:b4f61c49c866 | 68 | // enabled for some regions, issue gbpu instruction to clear |
JackB | 0:b4f61c49c866 | 69 | _wren(); |
JackB | 0:b4f61c49c866 | 70 | _cmdwrite(0x98, 0, 0, 0x0, NULL); |
JackB | 0:b4f61c49c866 | 71 | break; |
JackB | 0:b4f61c49c866 | 72 | } |
JackB | 0:b4f61c49c866 | 73 | |
JackB | 0:b4f61c49c866 | 74 | // Check that device is doing ok |
JackB | 0:b4f61c49c866 | 75 | int err = _sync(); |
JackB | 0:b4f61c49c866 | 76 | if (err) { |
JackB | 0:b4f61c49c866 | 77 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 78 | } |
JackB | 0:b4f61c49c866 | 79 | |
JackB | 0:b4f61c49c866 | 80 | // Check JEDEC serial flash discoverable parameters for device |
JackB | 0:b4f61c49c866 | 81 | // specific info |
JackB | 0:b4f61c49c866 | 82 | uint8_t header[16]; |
JackB | 0:b4f61c49c866 | 83 | _cmdread(SPIF_SFDP, 4, 16, 0x0, header); |
JackB | 0:b4f61c49c866 | 84 | |
JackB | 0:b4f61c49c866 | 85 | // Verify SFDP signature for sanity |
JackB | 0:b4f61c49c866 | 86 | // Also check that major/minor version is acceptable |
JackB | 0:b4f61c49c866 | 87 | if (!(memcmp(&header[0], "SFDP", 4) == 0 && header[5] == 1)) { |
JackB | 0:b4f61c49c866 | 88 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 89 | } |
JackB | 0:b4f61c49c866 | 90 | |
JackB | 0:b4f61c49c866 | 91 | // The SFDP spec indicates the standard table is always at offset 0 |
JackB | 0:b4f61c49c866 | 92 | // in the parameter headers, we check just to be safe |
JackB | 0:b4f61c49c866 | 93 | if (!(header[8] == 0 && header[10] == 1)) { |
JackB | 0:b4f61c49c866 | 94 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 95 | } |
JackB | 0:b4f61c49c866 | 96 | |
JackB | 0:b4f61c49c866 | 97 | // Parameter table pointer, spi commands are BE, SFDP is LE, |
JackB | 0:b4f61c49c866 | 98 | // also sfdp command expects extra read wait byte |
JackB | 0:b4f61c49c866 | 99 | uint32_t table_addr = ( |
JackB | 0:b4f61c49c866 | 100 | (header[14] << 24) | |
JackB | 0:b4f61c49c866 | 101 | (header[13] << 16) | |
JackB | 0:b4f61c49c866 | 102 | (header[12] << 8 )); |
JackB | 0:b4f61c49c866 | 103 | uint8_t table[8]; |
JackB | 0:b4f61c49c866 | 104 | _cmdread(SPIF_SFDP, 4, 8, table_addr, table); |
JackB | 0:b4f61c49c866 | 105 | |
JackB | 0:b4f61c49c866 | 106 | // Check erase size, currently only supports 4kbytes |
JackB | 0:b4f61c49c866 | 107 | // TODO support erase size != 4kbytes? |
JackB | 0:b4f61c49c866 | 108 | // TODO support other erase opcodes from the sector descriptions |
JackB | 0:b4f61c49c866 | 109 | if ((table[0] & 0x3) != 0x1 || table[1] != SPIF_SE) { |
JackB | 0:b4f61c49c866 | 110 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 111 | } |
JackB | 0:b4f61c49c866 | 112 | |
JackB | 0:b4f61c49c866 | 113 | // Check address size, currently only supports 3byte addresses |
JackB | 0:b4f61c49c866 | 114 | // TODO support address > 3bytes? |
JackB | 0:b4f61c49c866 | 115 | // TODO check for devices larger than 2Gbits? |
JackB | 0:b4f61c49c866 | 116 | if ((table[2] & 0x4) != 0 || (table[7] & 0x80) != 0) { |
JackB | 0:b4f61c49c866 | 117 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 118 | } |
JackB | 0:b4f61c49c866 | 119 | |
JackB | 0:b4f61c49c866 | 120 | // Get device density, stored as size in bits - 1 |
JackB | 0:b4f61c49c866 | 121 | uint32_t density = ( |
JackB | 0:b4f61c49c866 | 122 | (table[7] << 24) | |
JackB | 0:b4f61c49c866 | 123 | (table[6] << 16) | |
JackB | 0:b4f61c49c866 | 124 | (table[5] << 8 ) | |
JackB | 0:b4f61c49c866 | 125 | (table[4] << 0 )); |
JackB | 0:b4f61c49c866 | 126 | _size = (density/8) + 1; |
JackB | 0:b4f61c49c866 | 127 | |
JackB | 0:b4f61c49c866 | 128 | return 0; |
JackB | 0:b4f61c49c866 | 129 | } |
JackB | 0:b4f61c49c866 | 130 | |
JackB | 0:b4f61c49c866 | 131 | int SPIFBlockDevice::deinit() |
JackB | 0:b4f61c49c866 | 132 | { |
JackB | 0:b4f61c49c866 | 133 | // Latch write disable just to keep noise |
JackB | 0:b4f61c49c866 | 134 | // from changing the device |
JackB | 0:b4f61c49c866 | 135 | _cmdwrite(SPIF_WRDI, 0, 0, 0x0, NULL); |
JackB | 0:b4f61c49c866 | 136 | |
JackB | 0:b4f61c49c866 | 137 | return 0; |
JackB | 0:b4f61c49c866 | 138 | } |
JackB | 0:b4f61c49c866 | 139 | |
JackB | 0:b4f61c49c866 | 140 | void SPIFBlockDevice::_cmdread( |
JackB | 0:b4f61c49c866 | 141 | uint8_t op, uint32_t addrc, uint32_t retc, |
JackB | 0:b4f61c49c866 | 142 | uint32_t addr, uint8_t *rets) |
JackB | 0:b4f61c49c866 | 143 | { |
JackB | 0:b4f61c49c866 | 144 | _cs = 0; |
JackB | 0:b4f61c49c866 | 145 | _spi.write(op); |
JackB | 0:b4f61c49c866 | 146 | |
JackB | 0:b4f61c49c866 | 147 | for (uint32_t i = 0; i < addrc; i++) { |
JackB | 0:b4f61c49c866 | 148 | _spi.write(0xff & (addr >> 8*(addrc-1 - i))); |
JackB | 0:b4f61c49c866 | 149 | } |
JackB | 0:b4f61c49c866 | 150 | |
JackB | 0:b4f61c49c866 | 151 | for (uint32_t i = 0; i < retc; i++) { |
JackB | 0:b4f61c49c866 | 152 | rets[i] = _spi.write(0); |
JackB | 0:b4f61c49c866 | 153 | } |
JackB | 0:b4f61c49c866 | 154 | _cs = 1; |
JackB | 0:b4f61c49c866 | 155 | |
JackB | 0:b4f61c49c866 | 156 | if (SPIF_DEBUG) { |
JackB | 0:b4f61c49c866 | 157 | printf("spif <- %02x", op); |
JackB | 0:b4f61c49c866 | 158 | for (uint32_t i = 0; i < addrc; i++) { |
JackB | 0:b4f61c49c866 | 159 | if (i < addrc) { |
JackB | 0:b4f61c49c866 | 160 | printf("%02lx", 0xff & (addr >> 8*(addrc-1 - i))); |
JackB | 0:b4f61c49c866 | 161 | } else { |
JackB | 0:b4f61c49c866 | 162 | printf(" "); |
JackB | 0:b4f61c49c866 | 163 | } |
JackB | 0:b4f61c49c866 | 164 | } |
JackB | 0:b4f61c49c866 | 165 | printf(" "); |
JackB | 0:b4f61c49c866 | 166 | for (uint32_t i = 0; i < 16 && i < retc; i++) { |
JackB | 0:b4f61c49c866 | 167 | printf("%02x", rets[i]); |
JackB | 0:b4f61c49c866 | 168 | } |
JackB | 0:b4f61c49c866 | 169 | if (retc > 16) { |
JackB | 0:b4f61c49c866 | 170 | printf("..."); |
JackB | 0:b4f61c49c866 | 171 | } |
JackB | 0:b4f61c49c866 | 172 | printf("\n"); |
JackB | 0:b4f61c49c866 | 173 | } |
JackB | 0:b4f61c49c866 | 174 | } |
JackB | 0:b4f61c49c866 | 175 | |
JackB | 0:b4f61c49c866 | 176 | void SPIFBlockDevice::_cmdwrite( |
JackB | 0:b4f61c49c866 | 177 | uint8_t op, uint32_t addrc, uint32_t argc, |
JackB | 0:b4f61c49c866 | 178 | uint32_t addr, const uint8_t *args) |
JackB | 0:b4f61c49c866 | 179 | { |
JackB | 0:b4f61c49c866 | 180 | _cs = 0; |
JackB | 0:b4f61c49c866 | 181 | _spi.write(op); |
JackB | 0:b4f61c49c866 | 182 | |
JackB | 0:b4f61c49c866 | 183 | for (uint32_t i = 0; i < addrc; i++) { |
JackB | 0:b4f61c49c866 | 184 | _spi.write(0xff & (addr >> 8*(addrc-1 - i))); |
JackB | 0:b4f61c49c866 | 185 | } |
JackB | 0:b4f61c49c866 | 186 | |
JackB | 0:b4f61c49c866 | 187 | for (uint32_t i = 0; i < argc; i++) { |
JackB | 0:b4f61c49c866 | 188 | _spi.write(args[i]); |
JackB | 0:b4f61c49c866 | 189 | } |
JackB | 0:b4f61c49c866 | 190 | _cs = 1; |
JackB | 0:b4f61c49c866 | 191 | |
JackB | 0:b4f61c49c866 | 192 | if (SPIF_DEBUG) { |
JackB | 0:b4f61c49c866 | 193 | printf("spif -> %02x", op); |
JackB | 0:b4f61c49c866 | 194 | for (uint32_t i = 0; i < addrc; i++) { |
JackB | 0:b4f61c49c866 | 195 | if (i < addrc) { |
JackB | 0:b4f61c49c866 | 196 | printf("%02lx", 0xff & (addr >> 8*(addrc-1 - i))); |
JackB | 0:b4f61c49c866 | 197 | } else { |
JackB | 0:b4f61c49c866 | 198 | printf(" "); |
JackB | 0:b4f61c49c866 | 199 | } |
JackB | 0:b4f61c49c866 | 200 | } |
JackB | 0:b4f61c49c866 | 201 | printf(" "); |
JackB | 0:b4f61c49c866 | 202 | for (uint32_t i = 0; i < 16 && i < argc; i++) { |
JackB | 0:b4f61c49c866 | 203 | printf("%02x", args[i]); |
JackB | 0:b4f61c49c866 | 204 | } |
JackB | 0:b4f61c49c866 | 205 | if (argc > 16) { |
JackB | 0:b4f61c49c866 | 206 | printf("..."); |
JackB | 0:b4f61c49c866 | 207 | } |
JackB | 0:b4f61c49c866 | 208 | printf("\n"); |
JackB | 0:b4f61c49c866 | 209 | } |
JackB | 0:b4f61c49c866 | 210 | } |
JackB | 0:b4f61c49c866 | 211 | |
JackB | 0:b4f61c49c866 | 212 | int SPIFBlockDevice::_sync() |
JackB | 0:b4f61c49c866 | 213 | { |
JackB | 0:b4f61c49c866 | 214 | for (int i = 0; i < SPIF_TIMEOUT; i++) { |
JackB | 0:b4f61c49c866 | 215 | // Read status register until write not-in-progress |
JackB | 0:b4f61c49c866 | 216 | uint8_t status; |
JackB | 0:b4f61c49c866 | 217 | _cmdread(SPIF_RDSR, 0, 1, 0x0, &status); |
JackB | 0:b4f61c49c866 | 218 | |
JackB | 0:b4f61c49c866 | 219 | // Check WIP bit |
JackB | 0:b4f61c49c866 | 220 | if (!(status & SPIF_WIP)) { |
JackB | 0:b4f61c49c866 | 221 | return 0; |
JackB | 0:b4f61c49c866 | 222 | } |
JackB | 0:b4f61c49c866 | 223 | |
JackB | 0:b4f61c49c866 | 224 | wait_ms(1); |
JackB | 0:b4f61c49c866 | 225 | } |
JackB | 0:b4f61c49c866 | 226 | |
JackB | 0:b4f61c49c866 | 227 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 228 | } |
JackB | 0:b4f61c49c866 | 229 | |
JackB | 0:b4f61c49c866 | 230 | int SPIFBlockDevice::_wren() |
JackB | 0:b4f61c49c866 | 231 | { |
JackB | 0:b4f61c49c866 | 232 | _cmdwrite(SPIF_WREN, 0, 0, 0x0, NULL); |
JackB | 0:b4f61c49c866 | 233 | |
JackB | 0:b4f61c49c866 | 234 | for (int i = 0; i < SPIF_TIMEOUT; i++) { |
JackB | 0:b4f61c49c866 | 235 | // Read status register until write latch is enabled |
JackB | 0:b4f61c49c866 | 236 | uint8_t status; |
JackB | 0:b4f61c49c866 | 237 | _cmdread(SPIF_RDSR, 0, 1, 0x0, &status); |
JackB | 0:b4f61c49c866 | 238 | |
JackB | 0:b4f61c49c866 | 239 | // Check WEL bit |
JackB | 0:b4f61c49c866 | 240 | if (status & SPIF_WEL) { |
JackB | 0:b4f61c49c866 | 241 | return 0; |
JackB | 0:b4f61c49c866 | 242 | } |
JackB | 0:b4f61c49c866 | 243 | |
JackB | 0:b4f61c49c866 | 244 | wait_ms(1); |
JackB | 0:b4f61c49c866 | 245 | } |
JackB | 0:b4f61c49c866 | 246 | |
JackB | 0:b4f61c49c866 | 247 | return BD_ERROR_DEVICE_ERROR; |
JackB | 0:b4f61c49c866 | 248 | } |
JackB | 0:b4f61c49c866 | 249 | |
JackB | 0:b4f61c49c866 | 250 | int SPIFBlockDevice::read(void *buffer, bd_addr_t addr, bd_size_t size) |
JackB | 0:b4f61c49c866 | 251 | { |
JackB | 0:b4f61c49c866 | 252 | // Check the address and size fit onto the chip. |
JackB | 0:b4f61c49c866 | 253 | MBED_ASSERT(is_valid_read(addr, size)); |
JackB | 0:b4f61c49c866 | 254 | |
JackB | 0:b4f61c49c866 | 255 | _cmdread(SPIF_READ, 3, size, addr, static_cast<uint8_t *>(buffer)); |
JackB | 0:b4f61c49c866 | 256 | return 0; |
JackB | 0:b4f61c49c866 | 257 | } |
JackB | 0:b4f61c49c866 | 258 | |
JackB | 0:b4f61c49c866 | 259 | int SPIFBlockDevice::program(const void *buffer, bd_addr_t addr, bd_size_t size) |
JackB | 0:b4f61c49c866 | 260 | { |
JackB | 0:b4f61c49c866 | 261 | // Check the address and size fit onto the chip. |
JackB | 0:b4f61c49c866 | 262 | MBED_ASSERT(is_valid_program(addr, size)); |
JackB | 0:b4f61c49c866 | 263 | |
JackB | 0:b4f61c49c866 | 264 | while (size > 0) { |
JackB | 0:b4f61c49c866 | 265 | int err = _wren(); |
JackB | 0:b4f61c49c866 | 266 | if (err) { |
JackB | 0:b4f61c49c866 | 267 | return err; |
JackB | 0:b4f61c49c866 | 268 | } |
JackB | 0:b4f61c49c866 | 269 | |
JackB | 0:b4f61c49c866 | 270 | // Write up to 256 bytes a page |
JackB | 0:b4f61c49c866 | 271 | // TODO handle unaligned programs |
JackB | 0:b4f61c49c866 | 272 | uint32_t off = addr % 256; |
JackB | 0:b4f61c49c866 | 273 | uint32_t chunk = (off + size < 256) ? size : (256-off); |
JackB | 0:b4f61c49c866 | 274 | _cmdwrite(SPIF_PROG, 3, chunk, addr, static_cast<const uint8_t *>(buffer)); |
JackB | 0:b4f61c49c866 | 275 | buffer = static_cast<const uint8_t*>(buffer) + chunk; |
JackB | 0:b4f61c49c866 | 276 | addr += chunk; |
JackB | 0:b4f61c49c866 | 277 | size -= chunk; |
JackB | 0:b4f61c49c866 | 278 | |
JackB | 0:b4f61c49c866 | 279 | wait_ms(1); |
JackB | 0:b4f61c49c866 | 280 | |
JackB | 0:b4f61c49c866 | 281 | err = _sync(); |
JackB | 0:b4f61c49c866 | 282 | if (err) { |
JackB | 0:b4f61c49c866 | 283 | return err; |
JackB | 0:b4f61c49c866 | 284 | } |
JackB | 0:b4f61c49c866 | 285 | } |
JackB | 0:b4f61c49c866 | 286 | |
JackB | 0:b4f61c49c866 | 287 | return 0; |
JackB | 0:b4f61c49c866 | 288 | } |
JackB | 0:b4f61c49c866 | 289 | |
JackB | 0:b4f61c49c866 | 290 | int SPIFBlockDevice::erase(bd_addr_t addr, bd_size_t size) |
JackB | 0:b4f61c49c866 | 291 | { |
JackB | 0:b4f61c49c866 | 292 | // Check the address and size fit onto the chip. |
JackB | 0:b4f61c49c866 | 293 | MBED_ASSERT(is_valid_erase(addr, size)); |
JackB | 0:b4f61c49c866 | 294 | |
JackB | 0:b4f61c49c866 | 295 | while (size > 0) { |
JackB | 0:b4f61c49c866 | 296 | int err = _wren(); |
JackB | 0:b4f61c49c866 | 297 | if (err) { |
JackB | 0:b4f61c49c866 | 298 | return err; |
JackB | 0:b4f61c49c866 | 299 | } |
JackB | 0:b4f61c49c866 | 300 | |
JackB | 0:b4f61c49c866 | 301 | // Erase 4kbyte sectors |
JackB | 0:b4f61c49c866 | 302 | // TODO support other erase sizes? |
JackB | 0:b4f61c49c866 | 303 | uint32_t chunk = 4096; |
JackB | 0:b4f61c49c866 | 304 | _cmdwrite(SPIF_SE, 3, 0, addr, NULL); |
JackB | 0:b4f61c49c866 | 305 | addr += chunk; |
JackB | 0:b4f61c49c866 | 306 | size -= chunk; |
JackB | 0:b4f61c49c866 | 307 | |
JackB | 0:b4f61c49c866 | 308 | err = _sync(); |
JackB | 0:b4f61c49c866 | 309 | if (err) { |
JackB | 0:b4f61c49c866 | 310 | return err; |
JackB | 0:b4f61c49c866 | 311 | } |
JackB | 0:b4f61c49c866 | 312 | } |
JackB | 0:b4f61c49c866 | 313 | |
JackB | 0:b4f61c49c866 | 314 | return 0; |
JackB | 0:b4f61c49c866 | 315 | } |
JackB | 0:b4f61c49c866 | 316 | |
JackB | 0:b4f61c49c866 | 317 | bd_size_t SPIFBlockDevice::get_read_size() const |
JackB | 0:b4f61c49c866 | 318 | { |
JackB | 0:b4f61c49c866 | 319 | return SPIF_READ_SIZE; |
JackB | 0:b4f61c49c866 | 320 | } |
JackB | 0:b4f61c49c866 | 321 | |
JackB | 0:b4f61c49c866 | 322 | bd_size_t SPIFBlockDevice::get_program_size() const |
JackB | 0:b4f61c49c866 | 323 | { |
JackB | 0:b4f61c49c866 | 324 | return SPIF_PROG_SIZE; |
JackB | 0:b4f61c49c866 | 325 | } |
JackB | 0:b4f61c49c866 | 326 | |
JackB | 0:b4f61c49c866 | 327 | bd_size_t SPIFBlockDevice::get_erase_size() const |
JackB | 0:b4f61c49c866 | 328 | { |
JackB | 0:b4f61c49c866 | 329 | return SPIF_SE_SIZE; |
JackB | 0:b4f61c49c866 | 330 | } |
JackB | 0:b4f61c49c866 | 331 | |
JackB | 0:b4f61c49c866 | 332 | bd_size_t SPIFBlockDevice::size() const |
JackB | 0:b4f61c49c866 | 333 | { |
JackB | 0:b4f61c49c866 | 334 | return _size; |
JackB | 0:b4f61c49c866 | 335 | } |
JackB | 0:b4f61c49c866 | 336 | |
JackB | 0:b4f61c49c866 | 337 | int SPIFBlockDevice::get_erase_value() const |
JackB | 0:b4f61c49c866 | 338 | { |
JackB | 0:b4f61c49c866 | 339 | return 0xFF; |
JackB | 0:b4f61c49c866 | 340 | } |