Kazuki Yamamoto / Mbed 2 deprecated uart_i2c_conv

UART to I2C master(s) converter, targetting to emulate SC18IM700(NXP) chip

Dependencies:   mbed

UART to I2C master(s) converter, targetting to emulate SC18IM700(NXP) chip

Features

up to 4x I2C master

  • for LPC824 implement, we can use up to 4 channels of I2C masters
    • 1x Fm+ and 3x Fm I2C channels
  • for LPC1768 implement, we can use up to 2 channels of I2C masters
    • 2x Fm I2C channels
  • for LPC11U35 implement, only one channel for I2C master, but program uses USB CDC class for UART communication (means no external USB-Serial converter chip)
    • 1x Fm+ I2C channels

1x SPI master

up to 2x 8bit GPIO

Tested Platforms

LPC824

LPC1768

LPC11U35

Quote:

LPC11U35 implement requires importing USBDevice library to use USBSerial class

visit https://github.com/K4zuki/tinyI2C for more information

main.cpp@42:da85c17ea495, 2016-08-30 (annotated)

Committer:
k4zuki
Date:
Tue Aug 30 16:30:55 2016 +0000
Revision:
42:da85c17ea495
Parent:
41:b7c84115a2dd
Child:
76:fcbc456010e0
add headers and settings.h to switch 11U3x/824/1768; 11U3x requires to add USBSerial library in project

Who changed what in which revision?

UserRevisionLine numberNew contents of line
k4zuki 42:da85c17ea495 1 /** uart_i2c_conv for LPC824
k4zuki 42:da85c17ea495 2 */
k4zuki 38:9d12c615c8ea 3
k4zuki 42:da85c17ea495 4 #include "mbed.h"
k4zuki 42:da85c17ea495 5 #include "settings.h"
k4zuki 38:9d12c615c8ea 6 //Table 3. ASCII commands supported by SC18IM700
k4zuki 38:9d12c615c8ea 7 //ASCII command Hex value Command function
k4zuki 39:5817c3e6ce1e 8 //[X] S 0x53 I2C-bus START
k4zuki 42:da85c17ea495 9 //[X] P 0x50 I2C/SPI-bus STOP
k4zuki 42:da85c17ea495 10 //[X] R 0x52 read SC18IM700 internal register
k4zuki 42:da85c17ea495 11 //[X] W 0x57 write to SC18IM700 internal register
k4zuki 42:da85c17ea495 12 //[?] I 0x49 read GPIO port
k4zuki 42:da85c17ea495 13 //[?] O 0x4F write to GPIO port
k4zuki 39:5817c3e6ce1e 14 //[_] Z 0x5A power down
k4zuki 42:da85c17ea495 15 //[X] C 0x43 change channel
k4zuki 42:da85c17ea495 16 //[_] E 0x45 SPI transfer start
k4zuki 42:da85c17ea495 17 //[_] V 0x__ enable VDDIO output to chip
k4zuki 38:9d12c615c8ea 18
k4zuki 42:da85c17ea495 19 /**
k4zuki 42:da85c17ea495 20 "C| '0'| P"
k4zuki 42:da85c17ea495 21 "C| '1'| P"
k4zuki 42:da85c17ea495 22 "C| '2'| P"
k4zuki 42:da85c17ea495 23 "C| '3'| P"
k4zuki 42:da85c17ea495 24 "S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P"
k4zuki 42:da85c17ea495 25 "S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| S| 0x_8 _1| 0x_0 _4| P"
k4zuki 42:da85c17ea495 26 "S| 0x_8 _1| 0x_0 _4| P"
k4zuki 42:da85c17ea495 27 "R| '0'| P"
k4zuki 42:da85c17ea495 28 "R| '0'| '1'| ...| P"
k4zuki 42:da85c17ea495 29 "W| '0' 0x_a _a| P"
k4zuki 42:da85c17ea495 30 "W| '0' 0x_a _a| '1' 0x_b _b| ...| P"
k4zuki 42:da85c17ea495 31 "I| '0'| P"
k4zuki 42:da85c17ea495 32 "O| '0'| 0x_a _a| P"
k4zuki 42:da85c17ea495 33 "E| 0x_0 _4| 0x_0 _0| 0x_D _E _A _D _B _E _A _F| P" //write
k4zuki 42:da85c17ea495 34 "E| 0x_0 _4| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P" //write and read
k4zuki 42:da85c17ea495 35 */
k4zuki 38:9d12c615c8ea 36 int main()
k4zuki 38:9d12c615c8ea 37 {
k4zuki 42:da85c17ea495 38 I2C* dev = &dev1;
k4zuki 42:da85c17ea495 39
k4zuki 42:da85c17ea495 40 #ifdef isUART
k4zuki 38:9d12c615c8ea 41 pc.baud(115200);
k4zuki 38:9d12c615c8ea 42 #endif
k4zuki 42:da85c17ea495 43 _spi.frequency(8000000);
k4zuki 42:da85c17ea495 44
k4zuki 42:da85c17ea495 45 bool s = false;
k4zuki 42:da85c17ea495 46 dev1.frequency(400000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 42:da85c17ea495 47 #if defined(TARGET_SSCI824) || defined(TARGET_LP824MAX)
k4zuki 42:da85c17ea495 48 dev1.frequency(800000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 42:da85c17ea495 49 LPC_IOCON->PIO0_11 &= ~(0x03<<8);
k4zuki 42:da85c17ea495 50 LPC_IOCON->PIO0_11 |= (0x02<<8);
k4zuki 42:da85c17ea495 51 LPC_IOCON->PIO0_10 &= ~(0x03<<8);
k4zuki 42:da85c17ea495 52 LPC_IOCON->PIO0_10 |= (0x02<<8);
k4zuki 42:da85c17ea495 53 #elif defined(TARGET_MCU_LPC11U35_501) || defined(TARGET_LPC11U35_401)
k4zuki 42:da85c17ea495 54 dev1.frequency(800000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 42:da85c17ea495 55 LPC_IOCON->PIO0_4 &= ~(0x03<<8);
k4zuki 42:da85c17ea495 56 LPC_IOCON->PIO0_4 |= (0x02<<8);
k4zuki 42:da85c17ea495 57 LPC_IOCON->PIO0_5 &= ~(0x03<<8);
k4zuki 42:da85c17ea495 58 LPC_IOCON->PIO0_5 |= (0x02<<8);
k4zuki 42:da85c17ea495 59 #endif
k4zuki 42:da85c17ea495 60
k4zuki 42:da85c17ea495 61 #ifdef isI2C2
k4zuki 42:da85c17ea495 62 dev2.frequency(400000);//400k
k4zuki 42:da85c17ea495 63 #endif
k4zuki 42:da85c17ea495 64 #ifdef isI2C3
k4zuki 42:da85c17ea495 65 dev3.frequency(400000);//400k
k4zuki 42:da85c17ea495 66 #endif
k4zuki 42:da85c17ea495 67 #ifdef isI2C4
k4zuki 42:da85c17ea495 68 dev4.frequency(400000);//400k
k4zuki 42:da85c17ea495 69 #endif
k4zuki 42:da85c17ea495 70 #ifdef isGPIO1
k4zuki 42:da85c17ea495 71 DigitalInOut* gpio1[] = {
k4zuki 42:da85c17ea495 72 &_GPIO10,
k4zuki 42:da85c17ea495 73 &_GPIO11,
k4zuki 42:da85c17ea495 74 &_GPIO12,
k4zuki 42:da85c17ea495 75 &_GPIO13,
k4zuki 42:da85c17ea495 76 &_GPIO14,
k4zuki 42:da85c17ea495 77 &_GPIO15,
k4zuki 42:da85c17ea495 78 &_GPIO16,
k4zuki 42:da85c17ea495 79 &_GPIO17,
k4zuki 42:da85c17ea495 80 };
k4zuki 42:da85c17ea495 81 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 82 gpio1[k]->input();
k4zuki 42:da85c17ea495 83 gpio1[k]->mode( PullUp );
k4zuki 42:da85c17ea495 84 }
k4zuki 42:da85c17ea495 85 #endif
k4zuki 42:da85c17ea495 86
k4zuki 42:da85c17ea495 87 DigitalInOut* gpio0[] = {
k4zuki 42:da85c17ea495 88 &_GPIO00,
k4zuki 42:da85c17ea495 89 &_GPIO01,
k4zuki 42:da85c17ea495 90 &_GPIO02,
k4zuki 42:da85c17ea495 91 &_GPIO03,
k4zuki 42:da85c17ea495 92 &_GPIO04,
k4zuki 42:da85c17ea495 93 &_GPIO05,
k4zuki 42:da85c17ea495 94 &_GPIO06,
k4zuki 42:da85c17ea495 95 &_GPIO07,
k4zuki 42:da85c17ea495 96 };
k4zuki 42:da85c17ea495 97 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 98 gpio0[k]->input();
k4zuki 42:da85c17ea495 99 gpio0[k]->mode( PullUp );
k4zuki 42:da85c17ea495 100 }
k4zuki 38:9d12c615c8ea 101
k4zuki 42:da85c17ea495 102 int ack = 0;
k4zuki 42:da85c17ea495 103 int plength = 0;
k4zuki 42:da85c17ea495 104 int recieve[256];
k4zuki 42:da85c17ea495 105 char send[256];
k4zuki 42:da85c17ea495 106 for(int k = 0; k < 256; k+=4){
k4zuki 42:da85c17ea495 107 // cafe moca
k4zuki 42:da85c17ea495 108 recieve[k+0] = send[k+0] = 0xC4;
k4zuki 42:da85c17ea495 109 recieve[k+1] = send[k+1] = 0xFE;
k4zuki 42:da85c17ea495 110 recieve[k+2] = send[k+2] = 0xE0;
k4zuki 42:da85c17ea495 111 recieve[k+3] = send[k+3] = 0xCA;
k4zuki 42:da85c17ea495 112 }
k4zuki 42:da85c17ea495 113
k4zuki 42:da85c17ea495 114 int read = 0;
k4zuki 42:da85c17ea495 115 int address = 0;
k4zuki 42:da85c17ea495 116 int data = 0;
k4zuki 42:da85c17ea495 117 int _data = 0;
k4zuki 42:da85c17ea495 118 int length = 0;
k4zuki 42:da85c17ea495 119 int channel = 0;
k4zuki 42:da85c17ea495 120 int format = 8;
k4zuki 42:da85c17ea495 121 int enabled = 0;
k4zuki 42:da85c17ea495 122 int disabled = 0;
k4zuki 42:da85c17ea495 123 enum command_e {
k4zuki 42:da85c17ea495 124 CMD_S='S',
k4zuki 42:da85c17ea495 125 CMD_P='P',
k4zuki 42:da85c17ea495 126 CMD_C='C',
k4zuki 42:da85c17ea495 127 CMD_R='R',
k4zuki 42:da85c17ea495 128 CMD_W='W',
k4zuki 42:da85c17ea495 129 CMD_I='I',
k4zuki 42:da85c17ea495 130 CMD_O='O',
k4zuki 42:da85c17ea495 131 CMD_E='E',
k4zuki 38:9d12c615c8ea 132 };
k4zuki 42:da85c17ea495 133 enum channel_e {
k4zuki 42:da85c17ea495 134 CH0 = '0',
k4zuki 42:da85c17ea495 135 CH1 = '1',
k4zuki 42:da85c17ea495 136 CH2 = '2',
k4zuki 42:da85c17ea495 137 CH3 = '3',
k4zuki 42:da85c17ea495 138 };
k4zuki 42:da85c17ea495 139 enum register_e {
k4zuki 42:da85c17ea495 140 CHIP_ID = '0',
k4zuki 42:da85c17ea495 141 GPIO0_STAT = '1',
k4zuki 42:da85c17ea495 142 GPIO1_STAT = '2',
k4zuki 42:da85c17ea495 143 GPIO0_CONF = '3',
k4zuki 42:da85c17ea495 144 GPIO1_CONF = '4',
k4zuki 42:da85c17ea495 145 I2C_CONF = '5',
k4zuki 42:da85c17ea495 146 SPI_CONF = '6',
k4zuki 42:da85c17ea495 147 REG7,
k4zuki 42:da85c17ea495 148 REG8,
k4zuki 42:da85c17ea495 149 REG9,
k4zuki 42:da85c17ea495 150 };
k4zuki 42:da85c17ea495 151 // enum chipID_e {
k4zuki 42:da85c17ea495 152 // ID_LPC824 = '0',
k4zuki 42:da85c17ea495 153 // ID_LPC1768 = '1',
k4zuki 42:da85c17ea495 154 // ID_LPC11UXX = '2',
k4zuki 42:da85c17ea495 155 // };
k4zuki 42:da85c17ea495 156 // static const uint8_t chip_id=ID_LPC824;
k4zuki 42:da85c17ea495 157 static uint8_t registers[]={
k4zuki 42:da85c17ea495 158 chip_id,
k4zuki 42:da85c17ea495 159 0x00,
k4zuki 42:da85c17ea495 160 0x00,
k4zuki 42:da85c17ea495 161 0x00,
k4zuki 42:da85c17ea495 162 0x00,
k4zuki 42:da85c17ea495 163 0xFF,
k4zuki 42:da85c17ea495 164 0x70,
k4zuki 42:da85c17ea495 165 REG7,
k4zuki 42:da85c17ea495 166 REG8,
k4zuki 42:da85c17ea495 167 REG9,
k4zuki 42:da85c17ea495 168 };
k4zuki 42:da85c17ea495 169
k4zuki 38:9d12c615c8ea 170 int i=0;
k4zuki 38:9d12c615c8ea 171 while(1) {
k4zuki 42:da85c17ea495 172 i=0;
k4zuki 42:da85c17ea495 173 length=0;
k4zuki 38:9d12c615c8ea 174 while(true) {
k4zuki 42:da85c17ea495 175 read = pc.getc();
k4zuki 42:da85c17ea495 176 recieve[i] = read;
k4zuki 38:9d12c615c8ea 177 i++;
k4zuki 38:9d12c615c8ea 178 if(read == 'P') {
k4zuki 42:da85c17ea495 179 plength = i;
k4zuki 38:9d12c615c8ea 180 break;
k4zuki 38:9d12c615c8ea 181 }
k4zuki 38:9d12c615c8ea 182 }
k4zuki 38:9d12c615c8ea 183 i=0;
k4zuki 42:da85c17ea495 184 while(i < plength) {
k4zuki 38:9d12c615c8ea 185 switch(recieve[i]) {
k4zuki 42:da85c17ea495 186 case CMD_C:
k4zuki 42:da85c17ea495 187 {
k4zuki 42:da85c17ea495 188 s = false;
k4zuki 38:9d12c615c8ea 189 channel=recieve[i+1];
k4zuki 38:9d12c615c8ea 190 switch(channel) {
k4zuki 42:da85c17ea495 191 case CH0:
k4zuki 42:da85c17ea495 192 {
k4zuki 42:da85c17ea495 193 channel = CH0;
k4zuki 42:da85c17ea495 194 dev = &dev1;
k4zuki 38:9d12c615c8ea 195 break;
k4zuki 42:da85c17ea495 196 }
k4zuki 42:da85c17ea495 197 #ifdef isI2C2
k4zuki 42:da85c17ea495 198 case CH1:
k4zuki 42:da85c17ea495 199 {
k4zuki 42:da85c17ea495 200 channel = CH1;
k4zuki 42:da85c17ea495 201 dev = &dev2;
k4zuki 38:9d12c615c8ea 202 break;
k4zuki 42:da85c17ea495 203 }
k4zuki 42:da85c17ea495 204 #endif
k4zuki 42:da85c17ea495 205 #ifdef isI2C3
k4zuki 42:da85c17ea495 206 case CH2:
k4zuki 42:da85c17ea495 207 {
k4zuki 42:da85c17ea495 208 channel = CH2;
k4zuki 42:da85c17ea495 209 dev = &dev3;
k4zuki 38:9d12c615c8ea 210 break;
k4zuki 42:da85c17ea495 211 }
k4zuki 42:da85c17ea495 212 #endif
k4zuki 42:da85c17ea495 213 #ifdef isI2C4
k4zuki 42:da85c17ea495 214 case CH3:
k4zuki 42:da85c17ea495 215 {
k4zuki 42:da85c17ea495 216 channel = CH3;
k4zuki 42:da85c17ea495 217 dev = &dev4;
k4zuki 38:9d12c615c8ea 218 break;
k4zuki 42:da85c17ea495 219 }
k4zuki 42:da85c17ea495 220 #endif
k4zuki 38:9d12c615c8ea 221 default:
k4zuki 42:da85c17ea495 222 {
k4zuki 42:da85c17ea495 223 channel = CH0;
k4zuki 42:da85c17ea495 224 dev = &dev1;
k4zuki 38:9d12c615c8ea 225 break;
k4zuki 42:da85c17ea495 226 }
k4zuki 38:9d12c615c8ea 227 }
k4zuki 42:da85c17ea495 228 i += 2;
k4zuki 42:da85c17ea495 229 break;
k4zuki 42:da85c17ea495 230 }
k4zuki 42:da85c17ea495 231 case CMD_S:
k4zuki 42:da85c17ea495 232 {
k4zuki 42:da85c17ea495 233 s = true;
k4zuki 42:da85c17ea495 234 ack = plength - 2 - (i+1) + (recieve[i+2] & 0x01);
k4zuki 42:da85c17ea495 235 if(ack >= 4){ //valid packet
k4zuki 42:da85c17ea495 236 address = 0xff & (recieve[i+1] << 4 | (recieve[i+2] & 0x0F));
k4zuki 42:da85c17ea495 237 length = 0xff & (recieve[i+3] << 4 | (recieve[i+4] & 0x0F));
k4zuki 42:da85c17ea495 238
k4zuki 42:da85c17ea495 239 if(address & 0x01) { //read
k4zuki 42:da85c17ea495 240 ack = dev->read(address, send, length, false); //added
k4zuki 42:da85c17ea495 241 send[length] = ack;
k4zuki 42:da85c17ea495 242 length += 1;
k4zuki 42:da85c17ea495 243 i += 5;
k4zuki 42:da85c17ea495 244 } else { // write
k4zuki 42:da85c17ea495 245 for(int j = 0; j < (length * 2); j+=2) {
k4zuki 42:da85c17ea495 246 ack = 0xff&((recieve[5+j] << 4) | (recieve[6+j] & 0x0F));
k4zuki 42:da85c17ea495 247 *(send+(j/2)) = ack; //added
k4zuki 42:da85c17ea495 248 }
k4zuki 42:da85c17ea495 249 ack = dev->write(address, send, length, true); //added
k4zuki 42:da85c17ea495 250 i += (5 + length * 2);
k4zuki 42:da85c17ea495 251 send[0] = ack;
k4zuki 42:da85c17ea495 252 length = 1;
k4zuki 42:da85c17ea495 253 }
k4zuki 42:da85c17ea495 254 }else{
k4zuki 42:da85c17ea495 255 pc.printf("bad packet! %d, %d, %02X, %d\n\r",plength,i,recieve[(i+2)]&0x0F,ack);
k4zuki 42:da85c17ea495 256 s = false;
k4zuki 42:da85c17ea495 257 i = plength;
k4zuki 42:da85c17ea495 258 }
k4zuki 42:da85c17ea495 259 break;
k4zuki 42:da85c17ea495 260 }
k4zuki 42:da85c17ea495 261 case CMD_P:
k4zuki 42:da85c17ea495 262 {
k4zuki 42:da85c17ea495 263 if(s){
k4zuki 42:da85c17ea495 264 dev->stop();
k4zuki 42:da85c17ea495 265 s = false;
k4zuki 42:da85c17ea495 266 if(send[length-1] == 0){
k4zuki 42:da85c17ea495 267 pc.printf("ACK,");
k4zuki 42:da85c17ea495 268 }else{
k4zuki 42:da85c17ea495 269 pc.printf("NAK,");
k4zuki 42:da85c17ea495 270 }
k4zuki 42:da85c17ea495 271 length--;
k4zuki 42:da85c17ea495 272 }
k4zuki 42:da85c17ea495 273 i = plength;
k4zuki 42:da85c17ea495 274 for(int j=0; j<length; j++) {
k4zuki 42:da85c17ea495 275 pc.printf("%02X,",send[j]);
k4zuki 42:da85c17ea495 276 }
k4zuki 42:da85c17ea495 277 pc.printf("ok\n\r");
k4zuki 38:9d12c615c8ea 278 break;
k4zuki 42:da85c17ea495 279 }
k4zuki 42:da85c17ea495 280 case CMD_R:
k4zuki 42:da85c17ea495 281 {
k4zuki 42:da85c17ea495 282 s = false;
k4zuki 42:da85c17ea495 283 length = plength - 2;
k4zuki 42:da85c17ea495 284 if(length < 1){
k4zuki 42:da85c17ea495 285 pc.printf("bad packet! %d\n\r",length);
k4zuki 42:da85c17ea495 286 i = plength + 1;
k4zuki 42:da85c17ea495 287 length = 0;
k4zuki 42:da85c17ea495 288 }else{
k4zuki 42:da85c17ea495 289 for(int j = 0; j < length; j++){
k4zuki 42:da85c17ea495 290 address = recieve[i+1+j];
k4zuki 42:da85c17ea495 291 switch(address){
k4zuki 42:da85c17ea495 292 case CHIP_ID:
k4zuki 42:da85c17ea495 293 {
k4zuki 42:da85c17ea495 294 data = chip_id;
k4zuki 42:da85c17ea495 295 break;
k4zuki 42:da85c17ea495 296 }
k4zuki 42:da85c17ea495 297 case GPIO0_STAT:
k4zuki 42:da85c17ea495 298 {
k4zuki 42:da85c17ea495 299 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 300 _data = gpio0[k]->read();
k4zuki 42:da85c17ea495 301 data |= (_data << k);
k4zuki 42:da85c17ea495 302 }
k4zuki 42:da85c17ea495 303 registers[GPIO0_STAT-'0'] = data;
k4zuki 42:da85c17ea495 304 break;
k4zuki 42:da85c17ea495 305 }
k4zuki 42:da85c17ea495 306 case GPIO0_CONF:
k4zuki 42:da85c17ea495 307 {
k4zuki 42:da85c17ea495 308 data = registers[GPIO0_CONF-'0'];
k4zuki 42:da85c17ea495 309 break;
k4zuki 42:da85c17ea495 310 }
k4zuki 42:da85c17ea495 311 #ifdef isGPIO1
k4zuki 42:da85c17ea495 312 case GPIO1_STAT:
k4zuki 42:da85c17ea495 313 {
k4zuki 42:da85c17ea495 314 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 315 _data = gpio1[k]->read();
k4zuki 42:da85c17ea495 316 data |= (_data << k);
k4zuki 42:da85c17ea495 317 }
k4zuki 42:da85c17ea495 318 registers[GPIO1_STAT-'0'] = data;
k4zuki 42:da85c17ea495 319 break;
k4zuki 42:da85c17ea495 320 }
k4zuki 42:da85c17ea495 321 case GPIO1_CONF:
k4zuki 42:da85c17ea495 322 {
k4zuki 42:da85c17ea495 323 data = registers[GPIO1_CONF-'0'];
k4zuki 42:da85c17ea495 324 break;
k4zuki 42:da85c17ea495 325 }
k4zuki 42:da85c17ea495 326 #endif
k4zuki 42:da85c17ea495 327 case I2C_CONF:
k4zuki 42:da85c17ea495 328 {
k4zuki 42:da85c17ea495 329 data = registers[I2C_CONF-'0'];
k4zuki 42:da85c17ea495 330 break;
k4zuki 42:da85c17ea495 331 }
k4zuki 42:da85c17ea495 332 case SPI_CONF:
k4zuki 42:da85c17ea495 333 {
k4zuki 42:da85c17ea495 334 data = registers[SPI_CONF-'0'];
k4zuki 42:da85c17ea495 335 break;
k4zuki 42:da85c17ea495 336 }
k4zuki 42:da85c17ea495 337 default:
k4zuki 42:da85c17ea495 338 {
k4zuki 42:da85c17ea495 339 data = 0xAA;
k4zuki 42:da85c17ea495 340 break;
k4zuki 42:da85c17ea495 341 }
k4zuki 42:da85c17ea495 342 }
k4zuki 42:da85c17ea495 343 send[j] = (char)data;
k4zuki 42:da85c17ea495 344 data = 0;
k4zuki 38:9d12c615c8ea 345 }
k4zuki 42:da85c17ea495 346 i += (length+1);
k4zuki 38:9d12c615c8ea 347 }
k4zuki 38:9d12c615c8ea 348 break;
k4zuki 42:da85c17ea495 349 }
k4zuki 42:da85c17ea495 350 case CMD_W:
k4zuki 42:da85c17ea495 351 {
k4zuki 42:da85c17ea495 352 s = false;
k4zuki 42:da85c17ea495 353 length = plength - 2;
k4zuki 42:da85c17ea495 354 if(length < 3){
k4zuki 42:da85c17ea495 355 pc.printf("bad packet! %d\n\r",length);
k4zuki 42:da85c17ea495 356 i = plength + 1;
k4zuki 42:da85c17ea495 357 length = 0;
k4zuki 42:da85c17ea495 358 }else{
k4zuki 42:da85c17ea495 359 for(int j = 0; j < length; j +=3){
k4zuki 42:da85c17ea495 360 address = recieve[i+1+j];
k4zuki 42:da85c17ea495 361 data = 0xff & (recieve[i+2+j] << 4 | (recieve[i+3+j] & 0x0F));
k4zuki 42:da85c17ea495 362 _data = 0;
k4zuki 42:da85c17ea495 363 switch(address){
k4zuki 42:da85c17ea495 364 case CHIP_ID:
k4zuki 42:da85c17ea495 365 {
k4zuki 42:da85c17ea495 366 //READ ONLY: do nothing
k4zuki 42:da85c17ea495 367 data = registers[CHIP_ID-'0'];
k4zuki 42:da85c17ea495 368 break;
k4zuki 42:da85c17ea495 369 }
k4zuki 42:da85c17ea495 370 case GPIO0_STAT:
k4zuki 42:da85c17ea495 371 {
k4zuki 42:da85c17ea495 372 _data = registers[GPIO0_CONF-'0'];
k4zuki 42:da85c17ea495 373 for(int k=0; k<8; k++){
k4zuki 42:da85c17ea495 374 if(_data&0x01){ // output
k4zuki 42:da85c17ea495 375 gpio0[k]->write((data>>k)&0x01);
k4zuki 42:da85c17ea495 376 }else{ // input
k4zuki 42:da85c17ea495 377 ; // do nothing
k4zuki 42:da85c17ea495 378 }
k4zuki 42:da85c17ea495 379 _data >>= 1;
k4zuki 42:da85c17ea495 380 }
k4zuki 42:da85c17ea495 381 break;
k4zuki 42:da85c17ea495 382 }
k4zuki 42:da85c17ea495 383 case GPIO0_CONF:
k4zuki 42:da85c17ea495 384 {
k4zuki 42:da85c17ea495 385 registers[GPIO0_CONF-'0'] = data;
k4zuki 42:da85c17ea495 386 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 387 if(data & 0x01){//output
k4zuki 42:da85c17ea495 388 gpio0[k]->output();
k4zuki 42:da85c17ea495 389 }else{//input
k4zuki 42:da85c17ea495 390 gpio0[k]->input();
k4zuki 42:da85c17ea495 391 gpio0[k]->mode(PullUp);
k4zuki 42:da85c17ea495 392 }
k4zuki 42:da85c17ea495 393 data >>= 1;
k4zuki 42:da85c17ea495 394 }
k4zuki 42:da85c17ea495 395 data = registers[GPIO0_CONF-'0'];
k4zuki 42:da85c17ea495 396 break;
k4zuki 42:da85c17ea495 397 }
k4zuki 42:da85c17ea495 398 #ifdef isGPIO1
k4zuki 42:da85c17ea495 399 case GPIO1_STAT:
k4zuki 42:da85c17ea495 400 {
k4zuki 42:da85c17ea495 401 _data = registers[GPIO1_CONF-'0'];
k4zuki 42:da85c17ea495 402 for(int k = 0; k < 8; k++){
k4zuki 42:da85c17ea495 403 if(_data & 0x01){ // output
k4zuki 42:da85c17ea495 404 gpio1[k]->write((data>>k)&0x01);
k4zuki 42:da85c17ea495 405 }else{ // input
k4zuki 42:da85c17ea495 406 ; // do nothing
k4zuki 42:da85c17ea495 407 }
k4zuki 42:da85c17ea495 408 _data >>= 1;
k4zuki 42:da85c17ea495 409 }
k4zuki 42:da85c17ea495 410 break;
k4zuki 42:da85c17ea495 411 }
k4zuki 42:da85c17ea495 412 case GPIO1_CONF:
k4zuki 42:da85c17ea495 413 {
k4zuki 42:da85c17ea495 414 registers[GPIO1_CONF-'0'] = data;
k4zuki 42:da85c17ea495 415 for(int k = 0; k < 6; k++){
k4zuki 42:da85c17ea495 416 if(data & 0x01){//output
k4zuki 42:da85c17ea495 417 gpio1[k]->output();
k4zuki 42:da85c17ea495 418 }else{//input
k4zuki 42:da85c17ea495 419 gpio1[k]->input();
k4zuki 42:da85c17ea495 420 gpio1[k]->mode(PullUp);
k4zuki 42:da85c17ea495 421 }
k4zuki 42:da85c17ea495 422 data >>= 1;
k4zuki 42:da85c17ea495 423 }
k4zuki 42:da85c17ea495 424 data = registers[GPIO1_CONF-'0'];
k4zuki 42:da85c17ea495 425 break;
k4zuki 42:da85c17ea495 426 }
k4zuki 42:da85c17ea495 427 #endif
k4zuki 42:da85c17ea495 428 case I2C_CONF:
k4zuki 42:da85c17ea495 429 {
k4zuki 42:da85c17ea495 430 registers[I2C_CONF-'0'] = data;
k4zuki 42:da85c17ea495 431 #if defined(TARGET_LPC1768)
k4zuki 42:da85c17ea495 432 dev1.frequency(100000 * ((0x03 & (data >> 6)) + 1));
k4zuki 42:da85c17ea495 433 #else
k4zuki 42:da85c17ea495 434 dev1.frequency(200000 * ((0x03 & (data >> 6)) + 1));
k4zuki 42:da85c17ea495 435 #endif
k4zuki 42:da85c17ea495 436 #ifdef isI2C2
k4zuki 42:da85c17ea495 437 dev2.frequency(100000 * ((0x03 & (data >> 4)) + 1));
k4zuki 42:da85c17ea495 438 #endif
k4zuki 42:da85c17ea495 439 #ifdef isI2C3
k4zuki 42:da85c17ea495 440 dev3.frequency(100000 * ((0x03 & (data >> 2)) + 1));
k4zuki 42:da85c17ea495 441 #endif
k4zuki 42:da85c17ea495 442 #ifdef isI2C4
k4zuki 42:da85c17ea495 443 dev4.frequency(100000 * ((0x03 & (data >> 0)) + 1));
k4zuki 42:da85c17ea495 444 #endif
k4zuki 42:da85c17ea495 445 break;
k4zuki 42:da85c17ea495 446 }
k4zuki 42:da85c17ea495 447 case SPI_CONF:
k4zuki 42:da85c17ea495 448 {
k4zuki 42:da85c17ea495 449 registers[SPI_CONF-'0'] = data;
k4zuki 42:da85c17ea495 450 format = ((data & 0x04) + 4) << 1;
k4zuki 42:da85c17ea495 451 _spi.format(format, 0x03 & (data));
k4zuki 42:da85c17ea495 452 _spi.frequency(1000000 * ((0x07 & (data >> 4)) + 1));
k4zuki 42:da85c17ea495 453 enabled = (data & 0x08) >> 3;
k4zuki 42:da85c17ea495 454 /*
k4zuki 42:da85c17ea495 455 7 not used
k4zuki 42:da85c17ea495 456 6:4 frequency
k4zuki 42:da85c17ea495 457 3 CE pol
k4zuki 42:da85c17ea495 458 2 word size(0=8bit,1=16bit)
k4zuki 42:da85c17ea495 459 1:0 pol(corresponds to spi.format())
k4zuki 42:da85c17ea495 460 */
k4zuki 42:da85c17ea495 461 disabled = ~enabled;
k4zuki 42:da85c17ea495 462 break;
k4zuki 42:da85c17ea495 463 }
k4zuki 42:da85c17ea495 464 default:
k4zuki 42:da85c17ea495 465 {
k4zuki 42:da85c17ea495 466 break;
k4zuki 42:da85c17ea495 467 }
k4zuki 42:da85c17ea495 468 }
k4zuki 42:da85c17ea495 469 send[j/3] = data;
k4zuki 42:da85c17ea495 470 }
k4zuki 42:da85c17ea495 471 i += (length + 1);
k4zuki 42:da85c17ea495 472 length /= 3;
k4zuki 42:da85c17ea495 473 }
k4zuki 38:9d12c615c8ea 474 break;
k4zuki 42:da85c17ea495 475 }
k4zuki 42:da85c17ea495 476 case CMD_I:
k4zuki 42:da85c17ea495 477 {
k4zuki 42:da85c17ea495 478 s = false;
k4zuki 42:da85c17ea495 479 length = plength - 2;
k4zuki 42:da85c17ea495 480 if(length < 1){
k4zuki 42:da85c17ea495 481 pc.printf("bad packet! %d\n\r",length);
k4zuki 42:da85c17ea495 482 i = plength + 1;
k4zuki 42:da85c17ea495 483 length = 0;
k4zuki 42:da85c17ea495 484 }else{
k4zuki 42:da85c17ea495 485 for(int j=0; j<length; j++){
k4zuki 42:da85c17ea495 486 address = recieve[i+1+j];
k4zuki 42:da85c17ea495 487 _data=0;
k4zuki 42:da85c17ea495 488 switch(address){
k4zuki 42:da85c17ea495 489 case GPIO0_STAT:
k4zuki 42:da85c17ea495 490 {
k4zuki 42:da85c17ea495 491 for(int k=0; k<8; k++){
k4zuki 42:da85c17ea495 492 _data = gpio0[k]->read();
k4zuki 42:da85c17ea495 493 data |= (_data << k);
k4zuki 42:da85c17ea495 494 }
k4zuki 42:da85c17ea495 495 registers[GPIO0_STAT-'0'] = data;
k4zuki 42:da85c17ea495 496 break;
k4zuki 42:da85c17ea495 497 }
k4zuki 42:da85c17ea495 498 #ifdef isGPIO1
k4zuki 42:da85c17ea495 499 case GPIO1_STAT:
k4zuki 42:da85c17ea495 500 {
k4zuki 42:da85c17ea495 501 for(int k=0; k<8; k++){
k4zuki 42:da85c17ea495 502 _data = gpio1[k]->read();
k4zuki 42:da85c17ea495 503 data |= (_data << k);
k4zuki 42:da85c17ea495 504 }
k4zuki 42:da85c17ea495 505 registers[GPIO1_STAT-'0'] = data;
k4zuki 42:da85c17ea495 506 break;
k4zuki 42:da85c17ea495 507 }
k4zuki 42:da85c17ea495 508 #endif
k4zuki 42:da85c17ea495 509 default:
k4zuki 42:da85c17ea495 510 {
k4zuki 42:da85c17ea495 511 data = 0xAA;
k4zuki 42:da85c17ea495 512 break;
k4zuki 42:da85c17ea495 513 }
k4zuki 42:da85c17ea495 514 }
k4zuki 42:da85c17ea495 515 send[j] = (char)data;
k4zuki 42:da85c17ea495 516 data = 0;
k4zuki 42:da85c17ea495 517 }
k4zuki 42:da85c17ea495 518 i += (length+1);
k4zuki 42:da85c17ea495 519 }
k4zuki 38:9d12c615c8ea 520 break;
k4zuki 42:da85c17ea495 521 }
k4zuki 42:da85c17ea495 522 case CMD_O:
k4zuki 42:da85c17ea495 523 {
k4zuki 42:da85c17ea495 524 s = false;
k4zuki 42:da85c17ea495 525 length = plength - 2;
k4zuki 42:da85c17ea495 526 if(length < 3){
k4zuki 42:da85c17ea495 527 pc.printf("bad packet! %d\n\r",length);
k4zuki 42:da85c17ea495 528 i = plength + 1;
k4zuki 42:da85c17ea495 529 length = 0;
k4zuki 42:da85c17ea495 530 }else{
k4zuki 42:da85c17ea495 531 for(int j=0; j<length; j+=3){
k4zuki 42:da85c17ea495 532 address = recieve[i+1+j];
k4zuki 42:da85c17ea495 533 data = 0xff & (recieve[i+2+j] << 4 | (recieve[i+3+j] & 0x0F));
k4zuki 42:da85c17ea495 534 switch(address){
k4zuki 42:da85c17ea495 535 case GPIO0_STAT:
k4zuki 42:da85c17ea495 536 {
k4zuki 42:da85c17ea495 537 _data = registers[GPIO0_CONF-'0'];
k4zuki 42:da85c17ea495 538 for(int k=0; k<8; k++){
k4zuki 42:da85c17ea495 539 if(_data&0x01){ // output
k4zuki 42:da85c17ea495 540 gpio0[k]->write(data&0x01);
k4zuki 42:da85c17ea495 541 }else{ // input
k4zuki 42:da85c17ea495 542 ; // do nothing
k4zuki 42:da85c17ea495 543 }
k4zuki 42:da85c17ea495 544 data >>= 1;
k4zuki 42:da85c17ea495 545 _data >>= 1;
k4zuki 42:da85c17ea495 546 }
k4zuki 42:da85c17ea495 547 break;
k4zuki 42:da85c17ea495 548 }
k4zuki 42:da85c17ea495 549 #ifdef isGPIO1
k4zuki 42:da85c17ea495 550 case GPIO1_STAT:
k4zuki 42:da85c17ea495 551 {
k4zuki 42:da85c17ea495 552 _data = registers[GPIO1_CONF-'0'];
k4zuki 42:da85c17ea495 553 for(int k=0; k<8; k++){
k4zuki 42:da85c17ea495 554 if(_data&0x01){ // output
k4zuki 42:da85c17ea495 555 gpio1[k]->write(data&0x01);
k4zuki 42:da85c17ea495 556 }else{ // input
k4zuki 42:da85c17ea495 557 ; // do nothing
k4zuki 42:da85c17ea495 558 }
k4zuki 42:da85c17ea495 559 data >>= 1;
k4zuki 42:da85c17ea495 560 _data >>= 1;
k4zuki 42:da85c17ea495 561 }
k4zuki 42:da85c17ea495 562 break;
k4zuki 42:da85c17ea495 563 }
k4zuki 42:da85c17ea495 564 #endif
k4zuki 42:da85c17ea495 565 default:
k4zuki 42:da85c17ea495 566 {
k4zuki 42:da85c17ea495 567 break;
k4zuki 42:da85c17ea495 568 }
k4zuki 42:da85c17ea495 569 }
k4zuki 42:da85c17ea495 570 send[j/3] = data;
k4zuki 42:da85c17ea495 571 }
k4zuki 42:da85c17ea495 572 }
k4zuki 42:da85c17ea495 573 i += (length+1);
k4zuki 42:da85c17ea495 574 length /= 3;
k4zuki 42:da85c17ea495 575 // pc.printf("command O is not implemented, ");
k4zuki 38:9d12c615c8ea 576 break;
k4zuki 42:da85c17ea495 577 }
k4zuki 42:da85c17ea495 578 case CMD_E:
k4zuki 42:da85c17ea495 579 {
k4zuki 42:da85c17ea495 580 s = false;
k4zuki 42:da85c17ea495 581 /*
k4zuki 42:da85c17ea495 582 "0| 1 2| 3 4| 5 6 7 8 9 10 11 12|13" //plength=14
k4zuki 42:da85c17ea495 583 "E| 0x_0 _1| 0x_0 _0| 0x_D _E| P" //minimum plength=8
k4zuki 42:da85c17ea495 584 "E| 0x_0 _1| 0x_0 _0| 0x_D _E|_A _D| P" //minimum plength=10(16bit)
k4zuki 42:da85c17ea495 585 "E| 0x_0 _4| 0x_0 _0| 0x_D _E _A _D _B _E _A _F| P" //write
k4zuki 42:da85c17ea495 586 "E| 0x_0 _4| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P" //write and read
k4zuki 42:da85c17ea495 587 */
k4zuki 42:da85c17ea495 588 length = plength - 2; //6
k4zuki 42:da85c17ea495 589 if(length < 6){
k4zuki 42:da85c17ea495 590 pc.printf("bad packet! %d\n\r",length);
k4zuki 42:da85c17ea495 591 i = plength + 1;
k4zuki 42:da85c17ea495 592 length = 0;
k4zuki 42:da85c17ea495 593 }else{
k4zuki 42:da85c17ea495 594 length = length-4; //actual data in packet
k4zuki 42:da85c17ea495 595 data = 0xff & ((recieve[i+1]<<4) | (recieve[i+2]&0x0F)); // write length
k4zuki 42:da85c17ea495 596 read = 0xff & ((recieve[i+3]<<4) | (recieve[i+4]&0x0F)); // read length
k4zuki 42:da85c17ea495 597 switch(format){
k4zuki 42:da85c17ea495 598 case 8:
k4zuki 42:da85c17ea495 599 {
k4zuki 42:da85c17ea495 600 _cs.write(enabled);
k4zuki 42:da85c17ea495 601 for(int j = 0; j < length; j += 2){
k4zuki 42:da85c17ea495 602 _data = 0xff & ((recieve[i+5+j+0]<<4) | (recieve[i+5+j+1]&0x0F));
k4zuki 42:da85c17ea495 603 ack = _spi.write(_data);
k4zuki 42:da85c17ea495 604 // pc.printf("s%02X,",_data);
k4zuki 42:da85c17ea495 605 send[j/2] = ack;
k4zuki 42:da85c17ea495 606 }
k4zuki 42:da85c17ea495 607 for(int j = length; j < (length+2*read); j+=2){
k4zuki 42:da85c17ea495 608 ack = _spi.write(0xAA); //dummy data to write
k4zuki 42:da85c17ea495 609 // pc.printf("a%02X,",ack);
k4zuki 42:da85c17ea495 610 send[j/2] = ack;
k4zuki 42:da85c17ea495 611 }
k4zuki 42:da85c17ea495 612 _cs.write(disabled);
k4zuki 42:da85c17ea495 613 break;
k4zuki 42:da85c17ea495 614 }
k4zuki 42:da85c17ea495 615 case 16:
k4zuki 42:da85c17ea495 616 {
k4zuki 42:da85c17ea495 617 if((data%2) || (read%2)){ //invalid
k4zuki 42:da85c17ea495 618 pc.printf("bad packet! %d, %d\n\r",data,read);
k4zuki 42:da85c17ea495 619 i = plength + 1;
k4zuki 42:da85c17ea495 620 length = 0;
k4zuki 42:da85c17ea495 621 }else{
k4zuki 42:da85c17ea495 622 _cs.write(enabled);
k4zuki 42:da85c17ea495 623 for(int j = 0; j < length; j += 4){
k4zuki 42:da85c17ea495 624 _data = 0xffff & (((recieve[i+5+j+0] & 0x0F)<<12)|
k4zuki 42:da85c17ea495 625 ((recieve[i+5+j+1] & 0x0F)<<8 )|
k4zuki 42:da85c17ea495 626 ((recieve[i+5+j+2] & 0x0F)<<4 )|
k4zuki 42:da85c17ea495 627 ((recieve[i+5+j+3] & 0x0F)<<0 )
k4zuki 42:da85c17ea495 628 );
k4zuki 42:da85c17ea495 629 ack = _spi.write(_data);
k4zuki 42:da85c17ea495 630 // pc.printf("s%04X,",_data);
k4zuki 42:da85c17ea495 631 send[(j/2)+0] = 0xFF & (ack>>8);
k4zuki 42:da85c17ea495 632 send[(j/2)+1] = 0xFF & (ack>>0);
k4zuki 42:da85c17ea495 633 }
k4zuki 42:da85c17ea495 634 for(int j = length; j < (length+2*read); j += 4){
k4zuki 42:da85c17ea495 635 ack = _spi.write(0xAAAA); //dummy data to write
k4zuki 42:da85c17ea495 636 // pc.printf("a%04X,",ack);
k4zuki 42:da85c17ea495 637 send[(j/2)+0] = 0xFF & (ack>>8);
k4zuki 42:da85c17ea495 638 send[(j/2)+1] = 0xFF & (ack>>0);
k4zuki 42:da85c17ea495 639 }
k4zuki 42:da85c17ea495 640 _cs.write(disabled);
k4zuki 42:da85c17ea495 641 }
k4zuki 42:da85c17ea495 642 break;
k4zuki 42:da85c17ea495 643 }
k4zuki 42:da85c17ea495 644 default:
k4zuki 42:da85c17ea495 645 {
k4zuki 42:da85c17ea495 646 pc.printf("this shold not happen %d\n\r",format);
k4zuki 42:da85c17ea495 647 break;
k4zuki 42:da85c17ea495 648 }
k4zuki 42:da85c17ea495 649
k4zuki 42:da85c17ea495 650 }
k4zuki 42:da85c17ea495 651 // pc.printf("command E is for SPI transmission\n\r");
k4zuki 42:da85c17ea495 652 length = read + data;
k4zuki 42:da85c17ea495 653 i = (plength-1);
k4zuki 42:da85c17ea495 654 }
k4zuki 38:9d12c615c8ea 655 break;
k4zuki 42:da85c17ea495 656 }
k4zuki 38:9d12c615c8ea 657 case 'Z':
k4zuki 42:da85c17ea495 658 {
k4zuki 42:da85c17ea495 659 s = false;
k4zuki 38:9d12c615c8ea 660 pc.printf("command Z is not implemented\n\r");
k4zuki 38:9d12c615c8ea 661 i=plength;
k4zuki 38:9d12c615c8ea 662 break;
k4zuki 42:da85c17ea495 663 }
k4zuki 42:da85c17ea495 664 case 'V':
k4zuki 42:da85c17ea495 665 {
k4zuki 42:da85c17ea495 666 s = false;
k4zuki 42:da85c17ea495 667 pc.printf("command V is not implemented\n\r");
k4zuki 38:9d12c615c8ea 668 i=plength;
k4zuki 38:9d12c615c8ea 669 break;
k4zuki 42:da85c17ea495 670 }
k4zuki 42:da85c17ea495 671 default:
k4zuki 42:da85c17ea495 672 {
k4zuki 42:da85c17ea495 673 s = false;
k4zuki 42:da85c17ea495 674 pc.printf("command %c is not implemented\n\r", recieve[i]);
k4zuki 42:da85c17ea495 675 i=plength;
k4zuki 42:da85c17ea495 676 break;
k4zuki 42:da85c17ea495 677 }
k4zuki 38:9d12c615c8ea 678 }
k4zuki 38:9d12c615c8ea 679 }
k4zuki 38:9d12c615c8ea 680 i=0;
k4zuki 42:da85c17ea495 681 length=0;
k4zuki 38:9d12c615c8ea 682 }
k4zuki 38:9d12c615c8ea 683 }