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@2:feca9fa9a018, 2014-10-17 (annotated)

Committer:
k4zuki
Date:
Fri Oct 17 20:48:15 2014 +0000
Revision:
2:feca9fa9a018
Parent:
0:b597ed665b76
Child:
3:519893d7f038
formatting code only S and P commands implemented

Who changed what in which revision?

UserRevisionLine numberNew contents of line
k4zuki 0:b597ed665b76 1 /** uart_i2c_conv for LPC824
k4zuki 0:b597ed665b76 2 */
k4zuki 0:b597ed665b76 3
k4zuki 0:b597ed665b76 4 #include "mbed.h"
k4zuki 0:b597ed665b76 5 #include "settings.h"
k4zuki 0:b597ed665b76 6 //Table 3. ASCII commands supported by SC18IM700
k4zuki 0:b597ed665b76 7 //ASCII command Hex value Command function
k4zuki 0:b597ed665b76 8 //[X] S 0x53 I2C-bus START
k4zuki 0:b597ed665b76 9 //[X] P 0x50 I2C/SPI-bus STOP
k4zuki 0:b597ed665b76 10 //[X] R 0x52 read SC18IM700 internal register
k4zuki 0:b597ed665b76 11 //[X] W 0x57 write to SC18IM700 internal register
k4zuki 0:b597ed665b76 12 //[?] I 0x49 read GPIO port
k4zuki 0:b597ed665b76 13 //[?] O 0x4F write to GPIO port
k4zuki 0:b597ed665b76 14 //[_] Z 0x5A power down
k4zuki 0:b597ed665b76 15 //[X] C 0x43 change channel
k4zuki 0:b597ed665b76 16 //[_] E 0x45 SPI transfer start
k4zuki 0:b597ed665b76 17 //[_] V 0x__ enable VDDIO output to chip
k4zuki 0:b597ed665b76 18
k4zuki 0:b597ed665b76 19 /**
k4zuki 0:b597ed665b76 20 "C| '0'| P"
k4zuki 0:b597ed665b76 21 "C| '1'| P"
k4zuki 0:b597ed665b76 22 "C| '2'| P"
k4zuki 0:b597ed665b76 23 "C| '3'| P"
k4zuki 0:b597ed665b76 24 "S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P"
k4zuki 0:b597ed665b76 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 0:b597ed665b76 26 "S| 0x_8 _1| 0x_0 _4| P"
k4zuki 0:b597ed665b76 27 "R| '0'| P"
k4zuki 0:b597ed665b76 28 "R| '0'| '1'| ...| P"
k4zuki 0:b597ed665b76 29 "W| '0' 0x_a _a| P"
k4zuki 0:b597ed665b76 30 "W| '0' 0x_a _a| '1' 0x_b _b| ...| P"
k4zuki 0:b597ed665b76 31 "I| '0'| P"
k4zuki 0:b597ed665b76 32 "O| '0'| 0x_a _a| P"
k4zuki 0:b597ed665b76 33 "E| 0x_0 _4| 0x_0 _0| 0x_D _E _A _D _B _E _A _F| P" //write
k4zuki 0:b597ed665b76 34 "E| 0x_0 _4| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P" //write and read
k4zuki 0:b597ed665b76 35 */
k4zuki 0:b597ed665b76 36 int main()
k4zuki 0:b597ed665b76 37 {
k4zuki 0:b597ed665b76 38 I2C* dev = &dev1;
k4zuki 0:b597ed665b76 39
k4zuki 0:b597ed665b76 40 #ifdef isUART
k4zuki 0:b597ed665b76 41 pc.baud(115200);
k4zuki 0:b597ed665b76 42 #endif
k4zuki 0:b597ed665b76 43 _spi.frequency(8000000);
k4zuki 0:b597ed665b76 44
k4zuki 0:b597ed665b76 45 bool s = false;
k4zuki 0:b597ed665b76 46 dev1.frequency(400000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 0:b597ed665b76 47 #if defined(TARGET_SSCI824) || defined(TARGET_LP824MAX)
k4zuki 0:b597ed665b76 48 dev1.frequency(800000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 0:b597ed665b76 49 LPC_IOCON->PIO0_11 &= ~(0x03<<8);
k4zuki 0:b597ed665b76 50 LPC_IOCON->PIO0_11 |= (0x02<<8);
k4zuki 0:b597ed665b76 51 LPC_IOCON->PIO0_10 &= ~(0x03<<8);
k4zuki 0:b597ed665b76 52 LPC_IOCON->PIO0_10 |= (0x02<<8);
k4zuki 0:b597ed665b76 53 #elif defined(TARGET_MCU_LPC11U35_501) || defined(TARGET_LPC11U35_401)
k4zuki 0:b597ed665b76 54 dev1.frequency(800000);//800k; works around 940kHz with 200ohm pullups/ not work at 1M?
k4zuki 0:b597ed665b76 55 LPC_IOCON->PIO0_4 &= ~(0x03<<8);
k4zuki 0:b597ed665b76 56 LPC_IOCON->PIO0_4 |= (0x02<<8);
k4zuki 0:b597ed665b76 57 LPC_IOCON->PIO0_5 &= ~(0x03<<8);
k4zuki 0:b597ed665b76 58 LPC_IOCON->PIO0_5 |= (0x02<<8);
k4zuki 0:b597ed665b76 59 #endif
k4zuki 0:b597ed665b76 60
k4zuki 0:b597ed665b76 61 #ifdef isI2C2
k4zuki 0:b597ed665b76 62 dev2.frequency(400000);//400k
k4zuki 0:b597ed665b76 63 #endif
k4zuki 0:b597ed665b76 64 #ifdef isI2C3
k4zuki 0:b597ed665b76 65 dev3.frequency(400000);//400k
k4zuki 0:b597ed665b76 66 #endif
k4zuki 0:b597ed665b76 67 #ifdef isI2C4
k4zuki 0:b597ed665b76 68 dev4.frequency(400000);//400k
k4zuki 0:b597ed665b76 69 #endif
k4zuki 0:b597ed665b76 70 #ifdef isGPIO1
k4zuki 0:b597ed665b76 71 DigitalInOut* gpio1[] = {
k4zuki 0:b597ed665b76 72 &_GPIO10,
k4zuki 0:b597ed665b76 73 &_GPIO11,
k4zuki 0:b597ed665b76 74 &_GPIO12,
k4zuki 0:b597ed665b76 75 &_GPIO13,
k4zuki 0:b597ed665b76 76 &_GPIO14,
k4zuki 0:b597ed665b76 77 &_GPIO15,
k4zuki 0:b597ed665b76 78 &_GPIO16,
k4zuki 0:b597ed665b76 79 &_GPIO17,
k4zuki 0:b597ed665b76 80 };
k4zuki 0:b597ed665b76 81 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 82 gpio1[k]->input();
k4zuki 0:b597ed665b76 83 gpio1[k]->mode( PullUp );
k4zuki 0:b597ed665b76 84 }
k4zuki 0:b597ed665b76 85 #endif
k4zuki 0:b597ed665b76 86
k4zuki 0:b597ed665b76 87 DigitalInOut* gpio0[] = {
k4zuki 0:b597ed665b76 88 &_GPIO00,
k4zuki 0:b597ed665b76 89 &_GPIO01,
k4zuki 0:b597ed665b76 90 &_GPIO02,
k4zuki 0:b597ed665b76 91 &_GPIO03,
k4zuki 0:b597ed665b76 92 &_GPIO04,
k4zuki 0:b597ed665b76 93 &_GPIO05,
k4zuki 0:b597ed665b76 94 &_GPIO06,
k4zuki 0:b597ed665b76 95 &_GPIO07,
k4zuki 0:b597ed665b76 96 };
k4zuki 0:b597ed665b76 97 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 98 gpio0[k]->input();
k4zuki 0:b597ed665b76 99 gpio0[k]->mode( PullUp );
k4zuki 0:b597ed665b76 100 }
k4zuki 0:b597ed665b76 101
k4zuki 0:b597ed665b76 102 int ack = 0;
k4zuki 0:b597ed665b76 103 int plength = 0;
k4zuki 0:b597ed665b76 104 int recieve[256];
k4zuki 0:b597ed665b76 105 char send[256];
k4zuki 0:b597ed665b76 106 for(int k = 0; k < 256; k+=4){
k4zuki 0:b597ed665b76 107 // cafe moca
k4zuki 0:b597ed665b76 108 recieve[k+0] = send[k+0] = 0xC4;
k4zuki 0:b597ed665b76 109 recieve[k+1] = send[k+1] = 0xFE;
k4zuki 0:b597ed665b76 110 recieve[k+2] = send[k+2] = 0xE0;
k4zuki 0:b597ed665b76 111 recieve[k+3] = send[k+3] = 0xCA;
k4zuki 0:b597ed665b76 112 }
k4zuki 0:b597ed665b76 113
k4zuki 0:b597ed665b76 114 int read = 0;
k4zuki 0:b597ed665b76 115 int address = 0;
k4zuki 0:b597ed665b76 116 int data = 0;
k4zuki 0:b597ed665b76 117 int _data = 0;
k4zuki 0:b597ed665b76 118 int length = 0;
k4zuki 0:b597ed665b76 119 int channel = 0;
k4zuki 0:b597ed665b76 120 int format = 8;
k4zuki 0:b597ed665b76 121 int enabled = 0;
k4zuki 0:b597ed665b76 122 int disabled = 0;
k4zuki 0:b597ed665b76 123 enum command_e {
k4zuki 0:b597ed665b76 124 CMD_S='S',
k4zuki 0:b597ed665b76 125 CMD_P='P',
k4zuki 0:b597ed665b76 126 CMD_C='C',
k4zuki 0:b597ed665b76 127 CMD_R='R',
k4zuki 0:b597ed665b76 128 CMD_W='W',
k4zuki 0:b597ed665b76 129 CMD_I='I',
k4zuki 0:b597ed665b76 130 CMD_O='O',
k4zuki 0:b597ed665b76 131 CMD_E='E',
k4zuki 0:b597ed665b76 132 };
k4zuki 0:b597ed665b76 133 enum channel_e {
k4zuki 0:b597ed665b76 134 CH0 = '0',
k4zuki 0:b597ed665b76 135 CH1 = '1',
k4zuki 0:b597ed665b76 136 CH2 = '2',
k4zuki 0:b597ed665b76 137 CH3 = '3',
k4zuki 0:b597ed665b76 138 };
k4zuki 0:b597ed665b76 139 enum register_e {
k4zuki 0:b597ed665b76 140 CHIP_ID = '0',
k4zuki 0:b597ed665b76 141 GPIO0_STAT = '1',
k4zuki 0:b597ed665b76 142 GPIO1_STAT = '2',
k4zuki 0:b597ed665b76 143 GPIO0_CONF = '3',
k4zuki 0:b597ed665b76 144 GPIO1_CONF = '4',
k4zuki 0:b597ed665b76 145 I2C_CONF = '5',
k4zuki 0:b597ed665b76 146 SPI_CONF = '6',
k4zuki 0:b597ed665b76 147 REG7,
k4zuki 0:b597ed665b76 148 REG8,
k4zuki 0:b597ed665b76 149 REG9,
k4zuki 0:b597ed665b76 150 };
k4zuki 0:b597ed665b76 151 // enum chipID_e {
k4zuki 0:b597ed665b76 152 // ID_LPC824 = '0',
k4zuki 0:b597ed665b76 153 // ID_LPC1768 = '1',
k4zuki 0:b597ed665b76 154 // ID_LPC11UXX = '2',
k4zuki 0:b597ed665b76 155 // };
k4zuki 0:b597ed665b76 156 // static const uint8_t chip_id=ID_LPC824;
k4zuki 0:b597ed665b76 157 static uint8_t registers[]={
k4zuki 0:b597ed665b76 158 chip_id,
k4zuki 0:b597ed665b76 159 0x00,
k4zuki 0:b597ed665b76 160 0x00,
k4zuki 0:b597ed665b76 161 0x00,
k4zuki 0:b597ed665b76 162 0x00,
k4zuki 0:b597ed665b76 163 0xFF,
k4zuki 0:b597ed665b76 164 0x70,
k4zuki 0:b597ed665b76 165 REG7,
k4zuki 0:b597ed665b76 166 REG8,
k4zuki 0:b597ed665b76 167 REG9,
k4zuki 0:b597ed665b76 168 };
k4zuki 0:b597ed665b76 169
k4zuki 0:b597ed665b76 170 int i=0;
k4zuki 0:b597ed665b76 171 while(1) {
k4zuki 0:b597ed665b76 172 i=0;
k4zuki 0:b597ed665b76 173 length=0;
k4zuki 0:b597ed665b76 174 while(true) {
k4zuki 0:b597ed665b76 175 read = pc.getc();
k4zuki 0:b597ed665b76 176 recieve[i] = read;
k4zuki 0:b597ed665b76 177 i++;
k4zuki 0:b597ed665b76 178 if(read == 'P') {
k4zuki 0:b597ed665b76 179 plength = i;
k4zuki 0:b597ed665b76 180 break;
k4zuki 0:b597ed665b76 181 }
k4zuki 0:b597ed665b76 182 }
k4zuki 0:b597ed665b76 183 i=0;
k4zuki 0:b597ed665b76 184 while(i < plength) {
k4zuki 0:b597ed665b76 185 switch(recieve[i]) {
k4zuki 0:b597ed665b76 186 case CMD_C:
k4zuki 0:b597ed665b76 187 {
k4zuki 0:b597ed665b76 188 s = false;
k4zuki 0:b597ed665b76 189 channel=recieve[i+1];
k4zuki 0:b597ed665b76 190 switch(channel) {
k4zuki 0:b597ed665b76 191 case CH0:
k4zuki 0:b597ed665b76 192 {
k4zuki 0:b597ed665b76 193 channel = CH0;
k4zuki 0:b597ed665b76 194 dev = &dev1;
k4zuki 0:b597ed665b76 195 break;
k4zuki 0:b597ed665b76 196 }
k4zuki 0:b597ed665b76 197 #ifdef isI2C2
k4zuki 0:b597ed665b76 198 case CH1:
k4zuki 0:b597ed665b76 199 {
k4zuki 0:b597ed665b76 200 channel = CH1;
k4zuki 0:b597ed665b76 201 dev = &dev2;
k4zuki 0:b597ed665b76 202 break;
k4zuki 0:b597ed665b76 203 }
k4zuki 0:b597ed665b76 204 #endif
k4zuki 0:b597ed665b76 205 #ifdef isI2C3
k4zuki 0:b597ed665b76 206 case CH2:
k4zuki 0:b597ed665b76 207 {
k4zuki 0:b597ed665b76 208 channel = CH2;
k4zuki 0:b597ed665b76 209 dev = &dev3;
k4zuki 0:b597ed665b76 210 break;
k4zuki 0:b597ed665b76 211 }
k4zuki 0:b597ed665b76 212 #endif
k4zuki 0:b597ed665b76 213 #ifdef isI2C4
k4zuki 0:b597ed665b76 214 case CH3:
k4zuki 0:b597ed665b76 215 {
k4zuki 0:b597ed665b76 216 channel = CH3;
k4zuki 0:b597ed665b76 217 dev = &dev4;
k4zuki 0:b597ed665b76 218 break;
k4zuki 0:b597ed665b76 219 }
k4zuki 0:b597ed665b76 220 #endif
k4zuki 0:b597ed665b76 221 default:
k4zuki 0:b597ed665b76 222 {
k4zuki 0:b597ed665b76 223 channel = CH0;
k4zuki 0:b597ed665b76 224 dev = &dev1;
k4zuki 0:b597ed665b76 225 break;
k4zuki 0:b597ed665b76 226 }
k4zuki 0:b597ed665b76 227 }
k4zuki 0:b597ed665b76 228 i += 2;
k4zuki 0:b597ed665b76 229 break;
k4zuki 0:b597ed665b76 230 }
k4zuki 0:b597ed665b76 231 case CMD_S:
k4zuki 0:b597ed665b76 232 {
k4zuki 0:b597ed665b76 233 s = true;
k4zuki 0:b597ed665b76 234 ack = plength - 2 - (i+1) + (recieve[i+2] & 0x01);
k4zuki 0:b597ed665b76 235 if(ack >= 4){ //valid packet
k4zuki 0:b597ed665b76 236 address = 0xff & (recieve[i+1] << 4 | (recieve[i+2] & 0x0F));
k4zuki 0:b597ed665b76 237 length = 0xff & (recieve[i+3] << 4 | (recieve[i+4] & 0x0F));
k4zuki 0:b597ed665b76 238
k4zuki 0:b597ed665b76 239 if(address & 0x01) { //read
k4zuki 0:b597ed665b76 240 ack = dev->read(address, send, length, false); //added
k4zuki 0:b597ed665b76 241 send[length] = ack;
k4zuki 0:b597ed665b76 242 length += 1;
k4zuki 0:b597ed665b76 243 i += 5;
k4zuki 0:b597ed665b76 244 } else { // write
k4zuki 0:b597ed665b76 245 for(int j = 0; j < (length * 2); j+=2) {
k4zuki 0:b597ed665b76 246 ack = 0xff&((recieve[5+j] << 4) | (recieve[6+j] & 0x0F));
k4zuki 0:b597ed665b76 247 *(send+(j/2)) = ack; //added
k4zuki 0:b597ed665b76 248 }
k4zuki 0:b597ed665b76 249 ack = dev->write(address, send, length, true); //added
k4zuki 0:b597ed665b76 250 i += (5 + length * 2);
k4zuki 0:b597ed665b76 251 send[0] = ack;
k4zuki 0:b597ed665b76 252 length = 1;
k4zuki 0:b597ed665b76 253 }
k4zuki 0:b597ed665b76 254 }else{
k4zuki 0:b597ed665b76 255 pc.printf("bad packet! %d, %d, %02X, %d\n\r",plength,i,recieve[(i+2)]&0x0F,ack);
k4zuki 0:b597ed665b76 256 s = false;
k4zuki 0:b597ed665b76 257 i = plength;
k4zuki 0:b597ed665b76 258 }
k4zuki 0:b597ed665b76 259 break;
k4zuki 0:b597ed665b76 260 }
k4zuki 0:b597ed665b76 261 case CMD_P:
k4zuki 0:b597ed665b76 262 {
k4zuki 0:b597ed665b76 263 if(s){
k4zuki 0:b597ed665b76 264 dev->stop();
k4zuki 0:b597ed665b76 265 s = false;
k4zuki 0:b597ed665b76 266 if(send[length-1] == 0){
k4zuki 0:b597ed665b76 267 pc.printf("ACK,");
k4zuki 0:b597ed665b76 268 }else{
k4zuki 0:b597ed665b76 269 pc.printf("NAK,");
k4zuki 0:b597ed665b76 270 }
k4zuki 0:b597ed665b76 271 length--;
k4zuki 0:b597ed665b76 272 }
k4zuki 0:b597ed665b76 273 i = plength;
k4zuki 0:b597ed665b76 274 for(int j=0; j<length; j++) {
k4zuki 0:b597ed665b76 275 pc.printf("%02X,",send[j]);
k4zuki 0:b597ed665b76 276 }
k4zuki 0:b597ed665b76 277 pc.printf("ok\n\r");
k4zuki 0:b597ed665b76 278 break;
k4zuki 0:b597ed665b76 279 }
k4zuki 0:b597ed665b76 280 case CMD_R:
k4zuki 0:b597ed665b76 281 {
k4zuki 0:b597ed665b76 282 s = false;
k4zuki 0:b597ed665b76 283 length = plength - 2;
k4zuki 0:b597ed665b76 284 if(length < 1){
k4zuki 0:b597ed665b76 285 pc.printf("bad packet! %d\n\r",length);
k4zuki 0:b597ed665b76 286 i = plength + 1;
k4zuki 0:b597ed665b76 287 length = 0;
k4zuki 0:b597ed665b76 288 }else{
k4zuki 0:b597ed665b76 289 for(int j = 0; j < length; j++){
k4zuki 0:b597ed665b76 290 address = recieve[i+1+j];
k4zuki 0:b597ed665b76 291 switch(address){
k4zuki 0:b597ed665b76 292 case CHIP_ID:
k4zuki 0:b597ed665b76 293 {
k4zuki 0:b597ed665b76 294 data = chip_id;
k4zuki 0:b597ed665b76 295 break;
k4zuki 0:b597ed665b76 296 }
k4zuki 0:b597ed665b76 297 case GPIO0_STAT:
k4zuki 0:b597ed665b76 298 {
k4zuki 0:b597ed665b76 299 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 300 _data = gpio0[k]->read();
k4zuki 0:b597ed665b76 301 data |= (_data << k);
k4zuki 0:b597ed665b76 302 }
k4zuki 0:b597ed665b76 303 registers[GPIO0_STAT-'0'] = data;
k4zuki 0:b597ed665b76 304 break;
k4zuki 0:b597ed665b76 305 }
k4zuki 0:b597ed665b76 306 case GPIO0_CONF:
k4zuki 0:b597ed665b76 307 {
k4zuki 0:b597ed665b76 308 data = registers[GPIO0_CONF-'0'];
k4zuki 0:b597ed665b76 309 break;
k4zuki 0:b597ed665b76 310 }
k4zuki 0:b597ed665b76 311 #ifdef isGPIO1
k4zuki 0:b597ed665b76 312 case GPIO1_STAT:
k4zuki 0:b597ed665b76 313 {
k4zuki 0:b597ed665b76 314 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 315 _data = gpio1[k]->read();
k4zuki 0:b597ed665b76 316 data |= (_data << k);
k4zuki 0:b597ed665b76 317 }
k4zuki 0:b597ed665b76 318 registers[GPIO1_STAT-'0'] = data;
k4zuki 0:b597ed665b76 319 break;
k4zuki 0:b597ed665b76 320 }
k4zuki 0:b597ed665b76 321 case GPIO1_CONF:
k4zuki 0:b597ed665b76 322 {
k4zuki 0:b597ed665b76 323 data = registers[GPIO1_CONF-'0'];
k4zuki 0:b597ed665b76 324 break;
k4zuki 0:b597ed665b76 325 }
k4zuki 0:b597ed665b76 326 #endif
k4zuki 0:b597ed665b76 327 case I2C_CONF:
k4zuki 0:b597ed665b76 328 {
k4zuki 0:b597ed665b76 329 data = registers[I2C_CONF-'0'];
k4zuki 0:b597ed665b76 330 break;
k4zuki 0:b597ed665b76 331 }
k4zuki 0:b597ed665b76 332 case SPI_CONF:
k4zuki 0:b597ed665b76 333 {
k4zuki 0:b597ed665b76 334 data = registers[SPI_CONF-'0'];
k4zuki 0:b597ed665b76 335 break;
k4zuki 0:b597ed665b76 336 }
k4zuki 0:b597ed665b76 337 default:
k4zuki 0:b597ed665b76 338 {
k4zuki 0:b597ed665b76 339 data = 0xAA;
k4zuki 0:b597ed665b76 340 break;
k4zuki 0:b597ed665b76 341 }
k4zuki 0:b597ed665b76 342 }
k4zuki 0:b597ed665b76 343 send[j] = (char)data;
k4zuki 0:b597ed665b76 344 data = 0;
k4zuki 0:b597ed665b76 345 }
k4zuki 0:b597ed665b76 346 i += (length+1);
k4zuki 0:b597ed665b76 347 }
k4zuki 0:b597ed665b76 348 break;
k4zuki 0:b597ed665b76 349 }
k4zuki 0:b597ed665b76 350 case CMD_W:
k4zuki 0:b597ed665b76 351 {
k4zuki 0:b597ed665b76 352 s = false;
k4zuki 0:b597ed665b76 353 length = plength - 2;
k4zuki 0:b597ed665b76 354 if(length < 3){
k4zuki 0:b597ed665b76 355 pc.printf("bad packet! %d\n\r",length);
k4zuki 0:b597ed665b76 356 i = plength + 1;
k4zuki 0:b597ed665b76 357 length = 0;
k4zuki 0:b597ed665b76 358 }else{
k4zuki 0:b597ed665b76 359 for(int j = 0; j < length; j +=3){
k4zuki 0:b597ed665b76 360 address = recieve[i+1+j];
k4zuki 0:b597ed665b76 361 data = 0xff & (recieve[i+2+j] << 4 | (recieve[i+3+j] & 0x0F));
k4zuki 0:b597ed665b76 362 _data = 0;
k4zuki 0:b597ed665b76 363 switch(address){
k4zuki 0:b597ed665b76 364 case CHIP_ID:
k4zuki 0:b597ed665b76 365 {
k4zuki 0:b597ed665b76 366 //READ ONLY: do nothing
k4zuki 0:b597ed665b76 367 data = registers[CHIP_ID-'0'];
k4zuki 0:b597ed665b76 368 break;
k4zuki 0:b597ed665b76 369 }
k4zuki 0:b597ed665b76 370 case GPIO0_STAT:
k4zuki 0:b597ed665b76 371 {
k4zuki 0:b597ed665b76 372 _data = registers[GPIO0_CONF-'0'];
k4zuki 0:b597ed665b76 373 for(int k=0; k<8; k++){
k4zuki 0:b597ed665b76 374 if(_data&0x01){ // output
k4zuki 0:b597ed665b76 375 gpio0[k]->write((data>>k)&0x01);
k4zuki 0:b597ed665b76 376 }else{ // input
k4zuki 0:b597ed665b76 377 ; // do nothing
k4zuki 0:b597ed665b76 378 }
k4zuki 0:b597ed665b76 379 _data >>= 1;
k4zuki 0:b597ed665b76 380 }
k4zuki 0:b597ed665b76 381 break;
k4zuki 0:b597ed665b76 382 }
k4zuki 0:b597ed665b76 383 case GPIO0_CONF:
k4zuki 0:b597ed665b76 384 {
k4zuki 0:b597ed665b76 385 registers[GPIO0_CONF-'0'] = data;
k4zuki 0:b597ed665b76 386 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 387 if(data & 0x01){//output
k4zuki 0:b597ed665b76 388 gpio0[k]->output();
k4zuki 0:b597ed665b76 389 }else{//input
k4zuki 0:b597ed665b76 390 gpio0[k]->input();
k4zuki 0:b597ed665b76 391 gpio0[k]->mode(PullUp);
k4zuki 0:b597ed665b76 392 }
k4zuki 0:b597ed665b76 393 data >>= 1;
k4zuki 0:b597ed665b76 394 }
k4zuki 0:b597ed665b76 395 data = registers[GPIO0_CONF-'0'];
k4zuki 0:b597ed665b76 396 break;
k4zuki 0:b597ed665b76 397 }
k4zuki 0:b597ed665b76 398 #ifdef isGPIO1
k4zuki 0:b597ed665b76 399 case GPIO1_STAT:
k4zuki 0:b597ed665b76 400 {
k4zuki 0:b597ed665b76 401 _data = registers[GPIO1_CONF-'0'];
k4zuki 0:b597ed665b76 402 for(int k = 0; k < 8; k++){
k4zuki 0:b597ed665b76 403 if(_data & 0x01){ // output
k4zuki 0:b597ed665b76 404 gpio1[k]->write((data>>k)&0x01);
k4zuki 0:b597ed665b76 405 }else{ // input
k4zuki 0:b597ed665b76 406 ; // do nothing
k4zuki 0:b597ed665b76 407 }
k4zuki 0:b597ed665b76 408 _data >>= 1;
k4zuki 0:b597ed665b76 409 }
k4zuki 0:b597ed665b76 410 break;
k4zuki 0:b597ed665b76 411 }
k4zuki 0:b597ed665b76 412 case GPIO1_CONF:
k4zuki 0:b597ed665b76 413 {
k4zuki 0:b597ed665b76 414 registers[GPIO1_CONF-'0'] = data;
k4zuki 0:b597ed665b76 415 for(int k = 0; k < 6; k++){
k4zuki 0:b597ed665b76 416 if(data & 0x01){//output
k4zuki 0:b597ed665b76 417 gpio1[k]->output();
k4zuki 0:b597ed665b76 418 }else{//input
k4zuki 0:b597ed665b76 419 gpio1[k]->input();
k4zuki 0:b597ed665b76 420 gpio1[k]->mode(PullUp);
k4zuki 0:b597ed665b76 421 }
k4zuki 0:b597ed665b76 422 data >>= 1;
k4zuki 0:b597ed665b76 423 }
k4zuki 0:b597ed665b76 424 data = registers[GPIO1_CONF-'0'];
k4zuki 0:b597ed665b76 425 break;
k4zuki 0:b597ed665b76 426 }
k4zuki 0:b597ed665b76 427 #endif
k4zuki 0:b597ed665b76 428 case I2C_CONF:
k4zuki 0:b597ed665b76 429 {
k4zuki 0:b597ed665b76 430 registers[I2C_CONF-'0'] = data;
k4zuki 0:b597ed665b76 431 #if defined(TARGET_LPC1768)
k4zuki 0:b597ed665b76 432 dev1.frequency(100000 * ((0x03 & (data >> 6)) + 1));
k4zuki 0:b597ed665b76 433 #else
k4zuki 0:b597ed665b76 434 dev1.frequency(200000 * ((0x03 & (data >> 6)) + 1));
k4zuki 0:b597ed665b76 435 #endif
k4zuki 0:b597ed665b76 436 #ifdef isI2C2
k4zuki 0:b597ed665b76 437 dev2.frequency(100000 * ((0x03 & (data >> 4)) + 1));
k4zuki 0:b597ed665b76 438 #endif
k4zuki 0:b597ed665b76 439 #ifdef isI2C3
k4zuki 0:b597ed665b76 440 dev3.frequency(100000 * ((0x03 & (data >> 2)) + 1));
k4zuki 0:b597ed665b76 441 #endif
k4zuki 0:b597ed665b76 442 #ifdef isI2C4
k4zuki 0:b597ed665b76 443 dev4.frequency(100000 * ((0x03 & (data >> 0)) + 1));
k4zuki 0:b597ed665b76 444 #endif
k4zuki 0:b597ed665b76 445 break;
k4zuki 0:b597ed665b76 446 }
k4zuki 0:b597ed665b76 447 case SPI_CONF:
k4zuki 0:b597ed665b76 448 {
k4zuki 0:b597ed665b76 449 registers[SPI_CONF-'0'] = data;
k4zuki 0:b597ed665b76 450 format = ((data & 0x04) + 4) << 1;
k4zuki 0:b597ed665b76 451 _spi.format(format, 0x03 & (data));
k4zuki 0:b597ed665b76 452 _spi.frequency(1000000 * ((0x07 & (data >> 4)) + 1));
k4zuki 0:b597ed665b76 453 enabled = (data & 0x08) >> 3;
k4zuki 0:b597ed665b76 454 /*
k4zuki 0:b597ed665b76 455 7 not used
k4zuki 0:b597ed665b76 456 6:4 frequency
k4zuki 0:b597ed665b76 457 3 CE pol
k4zuki 0:b597ed665b76 458 2 word size(0=8bit,1=16bit)
k4zuki 0:b597ed665b76 459 1:0 pol(corresponds to spi.format())
k4zuki 0:b597ed665b76 460 */
k4zuki 0:b597ed665b76 461 disabled = ~enabled;
k4zuki 0:b597ed665b76 462 break;
k4zuki 0:b597ed665b76 463 }
k4zuki 0:b597ed665b76 464 default:
k4zuki 0:b597ed665b76 465 {
k4zuki 0:b597ed665b76 466 break;
k4zuki 0:b597ed665b76 467 }
k4zuki 0:b597ed665b76 468 }
k4zuki 0:b597ed665b76 469 send[j/3] = data;
k4zuki 0:b597ed665b76 470 }
k4zuki 0:b597ed665b76 471 i += (length + 1);
k4zuki 0:b597ed665b76 472 length /= 3;
k4zuki 0:b597ed665b76 473 }
k4zuki 0:b597ed665b76 474 break;
k4zuki 0:b597ed665b76 475 }
k4zuki 0:b597ed665b76 476 case CMD_I:
k4zuki 0:b597ed665b76 477 {
k4zuki 0:b597ed665b76 478 s = false;
k4zuki 0:b597ed665b76 479 length = plength - 2;
k4zuki 0:b597ed665b76 480 if(length < 1){
k4zuki 0:b597ed665b76 481 pc.printf("bad packet! %d\n\r",length);
k4zuki 0:b597ed665b76 482 i = plength + 1;
k4zuki 0:b597ed665b76 483 length = 0;
k4zuki 0:b597ed665b76 484 }else{
k4zuki 0:b597ed665b76 485 for(int j=0; j<length; j++){
k4zuki 0:b597ed665b76 486 address = recieve[i+1+j];
k4zuki 0:b597ed665b76 487 _data=0;
k4zuki 0:b597ed665b76 488 switch(address){
k4zuki 0:b597ed665b76 489 case GPIO0_STAT:
k4zuki 0:b597ed665b76 490 {
k4zuki 0:b597ed665b76 491 for(int k=0; k<8; k++){
k4zuki 0:b597ed665b76 492 _data = gpio0[k]->read();
k4zuki 0:b597ed665b76 493 data |= (_data << k);
k4zuki 0:b597ed665b76 494 }
k4zuki 0:b597ed665b76 495 registers[GPIO0_STAT-'0'] = data;
k4zuki 0:b597ed665b76 496 break;
k4zuki 0:b597ed665b76 497 }
k4zuki 0:b597ed665b76 498 #ifdef isGPIO1
k4zuki 0:b597ed665b76 499 case GPIO1_STAT:
k4zuki 0:b597ed665b76 500 {
k4zuki 0:b597ed665b76 501 for(int k=0; k<8; k++){
k4zuki 0:b597ed665b76 502 _data = gpio1[k]->read();
k4zuki 0:b597ed665b76 503 data |= (_data << k);
k4zuki 0:b597ed665b76 504 }
k4zuki 0:b597ed665b76 505 registers[GPIO1_STAT-'0'] = data;
k4zuki 0:b597ed665b76 506 break;
k4zuki 0:b597ed665b76 507 }
k4zuki 0:b597ed665b76 508 #endif
k4zuki 0:b597ed665b76 509 default:
k4zuki 0:b597ed665b76 510 {
k4zuki 0:b597ed665b76 511 data = 0xAA;
k4zuki 0:b597ed665b76 512 break;
k4zuki 0:b597ed665b76 513 }
k4zuki 0:b597ed665b76 514 }
k4zuki 0:b597ed665b76 515 send[j] = (char)data;
k4zuki 0:b597ed665b76 516 data = 0;
k4zuki 0:b597ed665b76 517 }
k4zuki 0:b597ed665b76 518 i += (length+1);
k4zuki 0:b597ed665b76 519 }
k4zuki 0:b597ed665b76 520 break;
k4zuki 0:b597ed665b76 521 }
k4zuki 0:b597ed665b76 522 case CMD_O:
k4zuki 0:b597ed665b76 523 {
k4zuki 0:b597ed665b76 524 s = false;
k4zuki 0:b597ed665b76 525 length = plength - 2;
k4zuki 0:b597ed665b76 526 if(length < 3){
k4zuki 0:b597ed665b76 527 pc.printf("bad packet! %d\n\r",length);
k4zuki 0:b597ed665b76 528 i = plength + 1;
k4zuki 0:b597ed665b76 529 length = 0;
k4zuki 0:b597ed665b76 530 }else{
k4zuki 0:b597ed665b76 531 for(int j=0; j<length; j+=3){
k4zuki 0:b597ed665b76 532 address = recieve[i+1+j];
k4zuki 0:b597ed665b76 533 data = 0xff & (recieve[i+2+j] << 4 | (recieve[i+3+j] & 0x0F));
k4zuki 0:b597ed665b76 534 switch(address){
k4zuki 0:b597ed665b76 535 case GPIO0_STAT:
k4zuki 0:b597ed665b76 536 {
k4zuki 0:b597ed665b76 537 _data = registers[GPIO0_CONF-'0'];
k4zuki 0:b597ed665b76 538 for(int k=0; k<8; k++){
k4zuki 0:b597ed665b76 539 if(_data&0x01){ // output
k4zuki 0:b597ed665b76 540 gpio0[k]->write(data&0x01);
k4zuki 0:b597ed665b76 541 }else{ // input
k4zuki 0:b597ed665b76 542 ; // do nothing
k4zuki 0:b597ed665b76 543 }
k4zuki 0:b597ed665b76 544 data >>= 1;
k4zuki 0:b597ed665b76 545 _data >>= 1;
k4zuki 0:b597ed665b76 546 }
k4zuki 0:b597ed665b76 547 break;
k4zuki 0:b597ed665b76 548 }
k4zuki 0:b597ed665b76 549 #ifdef isGPIO1
k4zuki 0:b597ed665b76 550 case GPIO1_STAT:
k4zuki 0:b597ed665b76 551 {
k4zuki 0:b597ed665b76 552 _data = registers[GPIO1_CONF-'0'];
k4zuki 0:b597ed665b76 553 for(int k=0; k<8; k++){
k4zuki 0:b597ed665b76 554 if(_data&0x01){ // output
k4zuki 0:b597ed665b76 555 gpio1[k]->write(data&0x01);
k4zuki 0:b597ed665b76 556 }else{ // input
k4zuki 0:b597ed665b76 557 ; // do nothing
k4zuki 0:b597ed665b76 558 }
k4zuki 0:b597ed665b76 559 data >>= 1;
k4zuki 0:b597ed665b76 560 _data >>= 1;
k4zuki 0:b597ed665b76 561 }
k4zuki 0:b597ed665b76 562 break;
k4zuki 0:b597ed665b76 563 }
k4zuki 0:b597ed665b76 564 #endif
k4zuki 0:b597ed665b76 565 default:
k4zuki 0:b597ed665b76 566 {
k4zuki 0:b597ed665b76 567 break;
k4zuki 0:b597ed665b76 568 }
k4zuki 0:b597ed665b76 569 }
k4zuki 0:b597ed665b76 570 send[j/3] = data;
k4zuki 0:b597ed665b76 571 }
k4zuki 0:b597ed665b76 572 }
k4zuki 0:b597ed665b76 573 i += (length+1);
k4zuki 0:b597ed665b76 574 length /= 3;
k4zuki 0:b597ed665b76 575 // pc.printf("command O is not implemented, ");
k4zuki 0:b597ed665b76 576 break;
k4zuki 0:b597ed665b76 577 }
k4zuki 0:b597ed665b76 578 case CMD_E:
k4zuki 0:b597ed665b76 579 {
k4zuki 0:b597ed665b76 580 s = false;
k4zuki 0:b597ed665b76 581 /*
k4zuki 0:b597ed665b76 582 "0| 1 2| 3 4| 5 6 7 8 9 10 11 12|13" //plength=14
k4zuki 0:b597ed665b76 583 "E| 0x_0 _1| 0x_0 _0| 0x_D _E| P" //minimum plength=8
k4zuki 0:b597ed665b76 584 "E| 0x_0 _1| 0x_0 _0| 0x_D _E|_A _D| P" //minimum plength=10(16bit)
k4zuki 0:b597ed665b76 585 "E| 0x_0 _4| 0x_0 _0| 0x_D _E _A _D _B _E _A _F| P" //write
k4zuki 0:b597ed665b76 586 "E| 0x_0 _4| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P" //write and read
k4zuki 0:b597ed665b76 587 */
k4zuki 0:b597ed665b76 588 length = plength - 2; //6
k4zuki 0:b597ed665b76 589 if(length < 6){
k4zuki 0:b597ed665b76 590 pc.printf("bad packet! %d\n\r",length);
k4zuki 0:b597ed665b76 591 i = plength + 1;
k4zuki 0:b597ed665b76 592 length = 0;
k4zuki 0:b597ed665b76 593 }else{
k4zuki 0:b597ed665b76 594 length = length-4; //actual data in packet
k4zuki 0:b597ed665b76 595 data = 0xff & ((recieve[i+1]<<4) | (recieve[i+2]&0x0F)); // write length
k4zuki 0:b597ed665b76 596 read = 0xff & ((recieve[i+3]<<4) | (recieve[i+4]&0x0F)); // read length
k4zuki 0:b597ed665b76 597 switch(format){
k4zuki 0:b597ed665b76 598 case 8:
k4zuki 0:b597ed665b76 599 {
k4zuki 0:b597ed665b76 600 _cs.write(enabled);
k4zuki 0:b597ed665b76 601 for(int j = 0; j < length; j += 2){
k4zuki 0:b597ed665b76 602 _data = 0xff & ((recieve[i+5+j+0]<<4) | (recieve[i+5+j+1]&0x0F));
k4zuki 0:b597ed665b76 603 ack = _spi.write(_data);
k4zuki 0:b597ed665b76 604 // pc.printf("s%02X,",_data);
k4zuki 0:b597ed665b76 605 send[j/2] = ack;
k4zuki 0:b597ed665b76 606 }
k4zuki 0:b597ed665b76 607 for(int j = length; j < (length+2*read); j+=2){
k4zuki 0:b597ed665b76 608 ack = _spi.write(0xAA); //dummy data to write
k4zuki 0:b597ed665b76 609 // pc.printf("a%02X,",ack);
k4zuki 0:b597ed665b76 610 send[j/2] = ack;
k4zuki 0:b597ed665b76 611 }
k4zuki 0:b597ed665b76 612 _cs.write(disabled);
k4zuki 0:b597ed665b76 613 break;
k4zuki 0:b597ed665b76 614 }
k4zuki 0:b597ed665b76 615 case 16:
k4zuki 0:b597ed665b76 616 {
k4zuki 0:b597ed665b76 617 if((data%2) || (read%2)){ //invalid
k4zuki 0:b597ed665b76 618 pc.printf("bad packet! %d, %d\n\r",data,read);
k4zuki 0:b597ed665b76 619 i = plength + 1;
k4zuki 0:b597ed665b76 620 length = 0;
k4zuki 0:b597ed665b76 621 }else{
k4zuki 0:b597ed665b76 622 _cs.write(enabled);
k4zuki 0:b597ed665b76 623 for(int j = 0; j < length; j += 4){
k4zuki 0:b597ed665b76 624 _data = 0xffff & (((recieve[i+5+j+0] & 0x0F)<<12)|
k4zuki 0:b597ed665b76 625 ((recieve[i+5+j+1] & 0x0F)<<8 )|
k4zuki 0:b597ed665b76 626 ((recieve[i+5+j+2] & 0x0F)<<4 )|
k4zuki 0:b597ed665b76 627 ((recieve[i+5+j+3] & 0x0F)<<0 )
k4zuki 0:b597ed665b76 628 );
k4zuki 0:b597ed665b76 629 ack = _spi.write(_data);
k4zuki 0:b597ed665b76 630 // pc.printf("s%04X,",_data);
k4zuki 0:b597ed665b76 631 send[(j/2)+0] = 0xFF & (ack>>8);
k4zuki 0:b597ed665b76 632 send[(j/2)+1] = 0xFF & (ack>>0);
k4zuki 0:b597ed665b76 633 }
k4zuki 0:b597ed665b76 634 for(int j = length; j < (length+2*read); j += 4){
k4zuki 0:b597ed665b76 635 ack = _spi.write(0xAAAA); //dummy data to write
k4zuki 0:b597ed665b76 636 // pc.printf("a%04X,",ack);
k4zuki 0:b597ed665b76 637 send[(j/2)+0] = 0xFF & (ack>>8);
k4zuki 0:b597ed665b76 638 send[(j/2)+1] = 0xFF & (ack>>0);
k4zuki 0:b597ed665b76 639 }
k4zuki 0:b597ed665b76 640 _cs.write(disabled);
k4zuki 0:b597ed665b76 641 }
k4zuki 0:b597ed665b76 642 break;
k4zuki 0:b597ed665b76 643 }
k4zuki 0:b597ed665b76 644 default:
k4zuki 0:b597ed665b76 645 {
k4zuki 0:b597ed665b76 646 pc.printf("this shold not happen %d\n\r",format);
k4zuki 0:b597ed665b76 647 break;
k4zuki 0:b597ed665b76 648 }
k4zuki 0:b597ed665b76 649
k4zuki 0:b597ed665b76 650 }
k4zuki 0:b597ed665b76 651 // pc.printf("command E is for SPI transmission\n\r");
k4zuki 0:b597ed665b76 652 length = read + data;
k4zuki 0:b597ed665b76 653 i = (plength-1);
k4zuki 0:b597ed665b76 654 }
k4zuki 0:b597ed665b76 655 break;
k4zuki 0:b597ed665b76 656 }
k4zuki 0:b597ed665b76 657 case 'Z':
k4zuki 0:b597ed665b76 658 {
k4zuki 0:b597ed665b76 659 s = false;
k4zuki 0:b597ed665b76 660 pc.printf("command Z is not implemented\n\r");
k4zuki 0:b597ed665b76 661 i=plength;
k4zuki 0:b597ed665b76 662 break;
k4zuki 0:b597ed665b76 663 }
k4zuki 0:b597ed665b76 664 case 'V':
k4zuki 0:b597ed665b76 665 {
k4zuki 0:b597ed665b76 666 s = false;
k4zuki 0:b597ed665b76 667 pc.printf("command V is not implemented\n\r");
k4zuki 0:b597ed665b76 668 i=plength;
k4zuki 0:b597ed665b76 669 break;
k4zuki 0:b597ed665b76 670 }
k4zuki 0:b597ed665b76 671 default:
k4zuki 0:b597ed665b76 672 {
k4zuki 0:b597ed665b76 673 s = false;
k4zuki 0:b597ed665b76 674 pc.printf("command %c is not implemented\n\r", recieve[i]);
k4zuki 0:b597ed665b76 675 i=plength;
k4zuki 0:b597ed665b76 676 break;
k4zuki 0:b597ed665b76 677 }
k4zuki 0:b597ed665b76 678 }
k4zuki 0:b597ed665b76 679 }
k4zuki 0:b597ed665b76 680 i=0;
k4zuki 0:b597ed665b76 681 length=0;
k4zuki 0:b597ed665b76 682 }
k4zuki 0:b597ed665b76 683 }