Ivo van Poorten
/
SiLabs_C2
Basis for the C2 protocol from Silicon Labs.
main.cpp@9:6a689843a88e, 2014-05-25 (annotated)
- Committer:
- Ivop
- Date:
- Sun May 25 17:37:32 2014 +0000
- Revision:
- 9:6a689843a88e
- Parent:
- 8:af5d402396fb
- Child:
- 10:0c02c5f1be3b
add pi status values;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Ivop | 1:7a82f806fe92 | 1 | /* |
Ivop | 1:7a82f806fe92 | 2 | * SiLabs C2 Protocol on mbed pins p5/p6 |
Ivop | 1:7a82f806fe92 | 3 | * |
Ivop | 1:7a82f806fe92 | 4 | * Copyright (c) 2014, Ivo van Poorten <ivopvp@gmail.com> |
Ivop | 1:7a82f806fe92 | 5 | * All rights reserved. |
Ivop | 1:7a82f806fe92 | 6 | * |
Ivop | 1:7a82f806fe92 | 7 | * Redistribution and use in source and binary forms, with or without |
Ivop | 1:7a82f806fe92 | 8 | * modification, are permitted provided that the following conditions |
Ivop | 1:7a82f806fe92 | 9 | * are met: |
Ivop | 1:7a82f806fe92 | 10 | * 1. Redistributions of source code must retain the above copyright |
Ivop | 1:7a82f806fe92 | 11 | * notice, this list of conditions and the following disclaimer. |
Ivop | 1:7a82f806fe92 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
Ivop | 1:7a82f806fe92 | 13 | * notice, this list of conditions and the following disclaimer in the |
Ivop | 1:7a82f806fe92 | 14 | * documentation and/or other materials provided with the distribution. |
Ivop | 1:7a82f806fe92 | 15 | * |
Ivop | 1:7a82f806fe92 | 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
Ivop | 1:7a82f806fe92 | 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
Ivop | 1:7a82f806fe92 | 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
Ivop | 1:7a82f806fe92 | 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
Ivop | 1:7a82f806fe92 | 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
Ivop | 1:7a82f806fe92 | 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
Ivop | 1:7a82f806fe92 | 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
Ivop | 1:7a82f806fe92 | 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
Ivop | 1:7a82f806fe92 | 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
Ivop | 1:7a82f806fe92 | 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Ivop | 1:7a82f806fe92 | 26 | */ |
Ivop | 1:7a82f806fe92 | 27 | |
Ivop | 0:902f10e5d3e0 | 28 | #include "mbed.h" |
Ivop | 7:65a72aad87b8 | 29 | #include <stdarg.h> |
Ivop | 0:902f10e5d3e0 | 30 | |
Ivop | 0:902f10e5d3e0 | 31 | DigitalOut c2ck(p5); |
Ivop | 0:902f10e5d3e0 | 32 | DigitalInOut c2d(p6); |
Ivop | 0:902f10e5d3e0 | 33 | |
Ivop | 4:a9e3ee5741be | 34 | static struct devices { |
Ivop | 4:a9e3ee5741be | 35 | char *name; |
Ivop | 4:a9e3ee5741be | 36 | int devid; |
Ivop | 4:a9e3ee5741be | 37 | } devices[] = { |
Ivop | 8:af5d402396fb | 38 | { "F30x", 0x04 }, { "F31x", 0x08 }, |
Ivop | 8:af5d402396fb | 39 | { "F32x", 0x09 }, { "F326/7", 0x0d }, |
Ivop | 8:af5d402396fb | 40 | { "F33x", 0x0a }, { "F336/7", 0x14 }, |
Ivop | 8:af5d402396fb | 41 | { "F34x", 0x0f }, { "F35x", 0x0b }, |
Ivop | 8:af5d402396fb | 42 | { "F36x", 0x12 }, { "F38x", 0x28 }, |
Ivop | 8:af5d402396fb | 43 | { "F39x/F37x", 0x2b }, { "F41x", 0x0c }, |
Ivop | 8:af5d402396fb | 44 | { "F50x/F51x", 0x1c }, { "F52xA/F53xA", 0x11 }, |
Ivop | 8:af5d402396fb | 45 | { "F54x", 0x21 }, { "F55x/F56x/F57x", 0x22 }, |
Ivop | 8:af5d402396fb | 46 | { "F58x/F59x", 0x20 }, { "F70x/F71x", 0x1e }, |
Ivop | 8:af5d402396fb | 47 | { "F80x/F81x/F82x/F83x", 0x23 }, { "F90x/F91x", 0x1f }, |
Ivop | 8:af5d402396fb | 48 | { "F92x/F93x", 0x16 }, { "F96x", 0x2a }, |
Ivop | 8:af5d402396fb | 49 | { "F99x", 0x25 }, { "T60x", 0x10 }, |
Ivop | 8:af5d402396fb | 50 | { "T606", 0x1b }, { "T61x", 0x13 }, |
Ivop | 8:af5d402396fb | 51 | { "T62x/T32x", 0x18 }, { "T622/T623/T326/T327", 0x19 }, |
Ivop | 8:af5d402396fb | 52 | { "T63x", 0x17 }, { NULL, 0 } |
Ivop | 4:a9e3ee5741be | 53 | }; |
Ivop | 4:a9e3ee5741be | 54 | |
Ivop | 6:deb670cb8105 | 55 | #define C2_MASK_FLBUSY 0x80 |
Ivop | 6:deb670cb8105 | 56 | #define C2_MASK_INBUSY 0x02 |
Ivop | 6:deb670cb8105 | 57 | #define C2_MASK_OUTREADY 0x01 |
Ivop | 6:deb670cb8105 | 58 | |
Ivop | 9:6a689843a88e | 59 | // Programming INterface (PI) Commands |
Ivop | 9:6a689843a88e | 60 | |
Ivop | 8:af5d402396fb | 61 | #define C2_PI_CMD_GET_VERSION 0x01 |
Ivop | 8:af5d402396fb | 62 | #define C2_PI_CMD_GET_DERIVATIVE 0x02 |
Ivop | 8:af5d402396fb | 63 | |
Ivop | 8:af5d402396fb | 64 | #define C2_PI_CMD_DEVICE_ERASE 0x03 |
Ivop | 8:af5d402396fb | 65 | |
Ivop | 8:af5d402396fb | 66 | #define C2_PI_CMD_BLOCK_READ 0x06 // FLASH (max. 64K bytes, bankswapping not supported) |
Ivop | 8:af5d402396fb | 67 | #define C2_PI_CMD_BLOCK_WRITE 0x07 // FLASH |
Ivop | 8:af5d402396fb | 68 | |
Ivop | 8:af5d402396fb | 69 | #define C2_PI_CMD_PAGE_ERASE 0x08 |
Ivop | 8:af5d402396fb | 70 | |
Ivop | 8:af5d402396fb | 71 | #define C2_PI_CMD_DIRECT_READ 0x09 // SFR (Special FUnction Registers, 256 bytes(?)) |
Ivop | 8:af5d402396fb | 72 | #define C2_PI_CMD_DIRECT_WRITE 0x0a // SFR |
Ivop | 8:af5d402396fb | 73 | |
Ivop | 8:af5d402396fb | 74 | #define C2_PI_CMD_INDIRECT_READ 0x0b // RAM (Internal, 256 bytes) |
Ivop | 8:af5d402396fb | 75 | #define C2_PI_CMD_INDIRECT_WRITE 0x0c // RAM |
Ivop | 8:af5d402396fb | 76 | |
Ivop | 8:af5d402396fb | 77 | #define C2_PI_CMD_XRAM_READ 0x0e // RAM (External, 2K or 4K bytes) |
Ivop | 8:af5d402396fb | 78 | #define C2_PI_CMD_XRAM_WRITE 0x0f // RAM |
Ivop | 8:af5d402396fb | 79 | |
Ivop | 9:6a689843a88e | 80 | // PI Status Values |
Ivop | 9:6a689843a88e | 81 | |
Ivop | 9:6a689843a88e | 82 | #define C2_PI_STATUS_COMMAND_INVALID 0x00 |
Ivop | 9:6a689843a88e | 83 | #define C2_PI_STATUS_NO_CONNECT 0x01 |
Ivop | 9:6a689843a88e | 84 | #define C2_PI_STATUS_FAILED 0x02 |
Ivop | 9:6a689843a88e | 85 | #define C2_PI_STATUS_TIMEOUT 0x04 |
Ivop | 9:6a689843a88e | 86 | #define C2_PI_STATUS_BAD_DATA 0x05 |
Ivop | 9:6a689843a88e | 87 | #define C2_PI_STATUS_OK 0x0d |
Ivop | 9:6a689843a88e | 88 | |
Ivop | 9:6a689843a88e | 89 | // C2 Registers |
Ivop | 4:a9e3ee5741be | 90 | #define C2_DEVID 0 |
Ivop | 4:a9e3ee5741be | 91 | #define C2_REVID 1 |
Ivop | 4:a9e3ee5741be | 92 | #define C2_FPCTL 2 |
Ivop | 4:a9e3ee5741be | 93 | static int C2_FPDAT = 0xb4; // or 0xad |
Ivop | 4:a9e3ee5741be | 94 | static int page_size = 512; // not seen 4096 yet |
Ivop | 4:a9e3ee5741be | 95 | |
Ivop | 7:65a72aad87b8 | 96 | static void fatal(char *f, ...) { |
Ivop | 7:65a72aad87b8 | 97 | va_list ap; |
Ivop | 7:65a72aad87b8 | 98 | va_start(ap,f); |
Ivop | 7:65a72aad87b8 | 99 | printf("\n\rFATAL: "); |
Ivop | 7:65a72aad87b8 | 100 | vprintf(f, ap); |
Ivop | 7:65a72aad87b8 | 101 | va_end(ap); |
Ivop | 7:65a72aad87b8 | 102 | exit(1); |
Ivop | 7:65a72aad87b8 | 103 | } |
Ivop | 7:65a72aad87b8 | 104 | |
Ivop | 1:7a82f806fe92 | 105 | static void c2ck_reset(void) { |
Ivop | 1:7a82f806fe92 | 106 | c2ck = 0; |
Ivop | 1:7a82f806fe92 | 107 | wait_us(25); |
Ivop | 1:7a82f806fe92 | 108 | c2ck = 1; |
Ivop | 1:7a82f806fe92 | 109 | wait_us(1); |
Ivop | 1:7a82f806fe92 | 110 | } |
Ivop | 1:7a82f806fe92 | 111 | |
Ivop | 1:7a82f806fe92 | 112 | static void c2ck_strobe(void) { |
Ivop | 1:7a82f806fe92 | 113 | c2ck = 0; |
Ivop | 1:7a82f806fe92 | 114 | wait_us(1); |
Ivop | 1:7a82f806fe92 | 115 | c2ck = 1; |
Ivop | 1:7a82f806fe92 | 116 | wait_us(1); |
Ivop | 1:7a82f806fe92 | 117 | } |
Ivop | 1:7a82f806fe92 | 118 | |
Ivop | 1:7a82f806fe92 | 119 | // Four basic C2 Instructions |
Ivop | 1:7a82f806fe92 | 120 | // |
Ivop | 1:7a82f806fe92 | 121 | // 00b Data Read |
Ivop | 1:7a82f806fe92 | 122 | // 01b Data Write |
Ivop | 1:7a82f806fe92 | 123 | // 10b Address Read |
Ivop | 1:7a82f806fe92 | 124 | // 11b Address Write |
Ivop | 2:9092d0d1558b | 125 | // |
Ivop | 2:9092d0d1558b | 126 | // Remember, ALL fields are sent LSB first(!) |
Ivop | 1:7a82f806fe92 | 127 | |
Ivop | 2:9092d0d1558b | 128 | #define START do{ c2ck_strobe(); }while(0) |
Ivop | 2:9092d0d1558b | 129 | #define STOP START |
Ivop | 2:9092d0d1558b | 130 | #define INS(a,b) do{ c2d = a; c2ck_strobe(); c2d = b; c2ck_strobe(); }while(0) |
Ivop | 2:9092d0d1558b | 131 | #define LENGTH(a,b) INS(a,b) |
Ivop | 2:9092d0d1558b | 132 | #define WAIT do{\ |
Ivop | 2:9092d0d1558b | 133 | while(t-- && !c2d) { \ |
Ivop | 2:9092d0d1558b | 134 | c2ck_strobe(); \ |
Ivop | 2:9092d0d1558b | 135 | wait_us(1); \ |
Ivop | 2:9092d0d1558b | 136 | } if (!t) return -1; \ |
Ivop | 2:9092d0d1558b | 137 | } while(0) |
Ivop | 4:a9e3ee5741be | 138 | #define READV do{\ |
Ivop | 4:a9e3ee5741be | 139 | for (i=0; i<8; i++) { \ |
Ivop | 4:a9e3ee5741be | 140 | v >>= 1; \ |
Ivop | 4:a9e3ee5741be | 141 | c2ck_strobe(); \ |
Ivop | 4:a9e3ee5741be | 142 | if (c2d) v |= 0x80; \ |
Ivop | 4:a9e3ee5741be | 143 | } } while(0) |
Ivop | 4:a9e3ee5741be | 144 | #define WRITEV do{\ |
Ivop | 4:a9e3ee5741be | 145 | for(i=0; i<8; i++) { \ |
Ivop | 4:a9e3ee5741be | 146 | c2d = v & 1; \ |
Ivop | 4:a9e3ee5741be | 147 | c2ck_strobe(); \ |
Ivop | 4:a9e3ee5741be | 148 | v >>= 1; \ |
Ivop | 4:a9e3ee5741be | 149 | } } while(0) |
Ivop | 2:9092d0d1558b | 150 | |
Ivop | 2:9092d0d1558b | 151 | static int c2_read_dr(void) { |
Ivop | 4:a9e3ee5741be | 152 | int t = 20, i, v = 0; |
Ivop | 2:9092d0d1558b | 153 | |
Ivop | 2:9092d0d1558b | 154 | START; |
Ivop | 2:9092d0d1558b | 155 | c2d.output(); |
Ivop | 2:9092d0d1558b | 156 | INS(0,0); |
Ivop | 2:9092d0d1558b | 157 | LENGTH(0,0); |
Ivop | 2:9092d0d1558b | 158 | c2d.input(); |
Ivop | 2:9092d0d1558b | 159 | WAIT; |
Ivop | 4:a9e3ee5741be | 160 | READV; |
Ivop | 2:9092d0d1558b | 161 | STOP; |
Ivop | 2:9092d0d1558b | 162 | |
Ivop | 4:a9e3ee5741be | 163 | return v; |
Ivop | 2:9092d0d1558b | 164 | } |
Ivop | 2:9092d0d1558b | 165 | |
Ivop | 4:a9e3ee5741be | 166 | static int c2_write_dr(int v) { |
Ivop | 2:9092d0d1558b | 167 | int t = 20, i; |
Ivop | 2:9092d0d1558b | 168 | |
Ivop | 2:9092d0d1558b | 169 | START; |
Ivop | 2:9092d0d1558b | 170 | c2d.output(); |
Ivop | 2:9092d0d1558b | 171 | INS(1,0); |
Ivop | 2:9092d0d1558b | 172 | LENGTH(0,0); |
Ivop | 4:a9e3ee5741be | 173 | WRITEV; |
Ivop | 2:9092d0d1558b | 174 | c2d.input(); |
Ivop | 2:9092d0d1558b | 175 | WAIT; |
Ivop | 2:9092d0d1558b | 176 | STOP; |
Ivop | 2:9092d0d1558b | 177 | |
Ivop | 2:9092d0d1558b | 178 | return 0; |
Ivop | 2:9092d0d1558b | 179 | } |
Ivop | 2:9092d0d1558b | 180 | |
Ivop | 2:9092d0d1558b | 181 | static int c2_read_ar(void) { |
Ivop | 4:a9e3ee5741be | 182 | int i, v = 0; |
Ivop | 2:9092d0d1558b | 183 | |
Ivop | 2:9092d0d1558b | 184 | START; |
Ivop | 2:9092d0d1558b | 185 | c2d.output(); |
Ivop | 2:9092d0d1558b | 186 | INS(0,1); |
Ivop | 2:9092d0d1558b | 187 | c2d.input(); |
Ivop | 4:a9e3ee5741be | 188 | READV; |
Ivop | 4:a9e3ee5741be | 189 | STOP; |
Ivop | 2:9092d0d1558b | 190 | |
Ivop | 4:a9e3ee5741be | 191 | return v; |
Ivop | 2:9092d0d1558b | 192 | } |
Ivop | 2:9092d0d1558b | 193 | |
Ivop | 4:a9e3ee5741be | 194 | static void c2_write_ar(int v) { |
Ivop | 2:9092d0d1558b | 195 | int i; |
Ivop | 2:9092d0d1558b | 196 | |
Ivop | 2:9092d0d1558b | 197 | START; |
Ivop | 2:9092d0d1558b | 198 | c2d.output(); |
Ivop | 2:9092d0d1558b | 199 | INS(1,1); |
Ivop | 4:a9e3ee5741be | 200 | WRITEV; |
Ivop | 2:9092d0d1558b | 201 | c2d.input(); |
Ivop | 2:9092d0d1558b | 202 | STOP; |
Ivop | 2:9092d0d1558b | 203 | } |
Ivop | 1:7a82f806fe92 | 204 | |
Ivop | 6:deb670cb8105 | 205 | static int poll_status(int mask) { |
Ivop | 6:deb670cb8105 | 206 | int t = 20; |
Ivop | 6:deb670cb8105 | 207 | do { |
Ivop | 6:deb670cb8105 | 208 | if (!(c2_read_ar() & mask)) return 0; |
Ivop | 6:deb670cb8105 | 209 | wait_us(1); |
Ivop | 6:deb670cb8105 | 210 | } while(--t); |
Ivop | 6:deb670cb8105 | 211 | return -1; |
Ivop | 6:deb670cb8105 | 212 | } |
Ivop | 7:65a72aad87b8 | 213 | |
Ivop | 0:902f10e5d3e0 | 214 | int main() { |
Ivop | 4:a9e3ee5741be | 215 | int i, c, devid, revid; |
Ivop | 1:7a82f806fe92 | 216 | |
Ivop | 1:7a82f806fe92 | 217 | c2d.input(); |
Ivop | 1:7a82f806fe92 | 218 | c2ck = 1; |
Ivop | 1:7a82f806fe92 | 219 | |
Ivop | 8:af5d402396fb | 220 | // printf("\033[H\033[J"); |
Ivop | 8:af5d402396fb | 221 | printf("\n\rSiLabs C2 Protocol\n\r\n\r"); |
Ivop | 1:7a82f806fe92 | 222 | printf("Connect C2CK (clock) to p5 and C2D (data) to p6\n\r\n\r"); |
Ivop | 1:7a82f806fe92 | 223 | printf("Press any key to continue\n\r"); |
Ivop | 4:a9e3ee5741be | 224 | |
Ivop | 4:a9e3ee5741be | 225 | getc(stdin); |
Ivop | 3:b30605f1c435 | 226 | |
Ivop | 5:53d4a67cd657 | 227 | c2_write_ar(C2_DEVID); |
Ivop | 3:b30605f1c435 | 228 | devid = c2_read_dr(); |
Ivop | 5:53d4a67cd657 | 229 | if (devid <= 0) fatal("unable to read devid\n\r"); |
Ivop | 1:7a82f806fe92 | 230 | |
Ivop | 5:53d4a67cd657 | 231 | c2_write_ar(C2_REVID); |
Ivop | 3:b30605f1c435 | 232 | revid = c2_read_dr(); |
Ivop | 3:b30605f1c435 | 233 | if (revid < 0) fatal("unable to read revid\n\r"); |
Ivop | 3:b30605f1c435 | 234 | |
Ivop | 4:a9e3ee5741be | 235 | for (i=0; devices[i].name; i++) { |
Ivop | 4:a9e3ee5741be | 236 | if (devices[i].devid == devid) break; |
Ivop | 4:a9e3ee5741be | 237 | } |
Ivop | 4:a9e3ee5741be | 238 | |
Ivop | 7:65a72aad87b8 | 239 | if (!i) fatal("unknown device: %02X:%02X\n\r", devid, revid); |
Ivop | 4:a9e3ee5741be | 240 | |
Ivop | 4:a9e3ee5741be | 241 | switch(devid) { |
Ivop | 4:a9e3ee5741be | 242 | case 0x0f: case 0x28: case 0x18: case 0x19: C2_FPDAT = 0xad; |
Ivop | 4:a9e3ee5741be | 243 | default: break; |
Ivop | 4:a9e3ee5741be | 244 | } |
Ivop | 4:a9e3ee5741be | 245 | |
Ivop | 4:a9e3ee5741be | 246 | printf("\n\rDevice found: %s (%02X:%02X)", devices[i].name, devid, revid); |
Ivop | 4:a9e3ee5741be | 247 | printf("\n\rFPDAT Address: 0x%02X", C2_FPDAT); |
Ivop | 4:a9e3ee5741be | 248 | printf("\n\rPage Size: %i\n\r", page_size); |
Ivop | 4:a9e3ee5741be | 249 | } |