MSS / Mbed 2 deprecated testI2C

Simple I2C test program. open/close/read/write supported.

Dependencies:   mbed vt100

main.cpp@0:1a2637f8e2dd, 2016-02-09 (annotated)

Committer:
Rhyme
Date:
Tue Feb 09 00:23:22 2016 +0000
Revision:
0:1a2637f8e2dd
Child:
1:e105ceaee6ac
First working version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rhyme 0:1a2637f8e2dd 1 #include "mbed.h"
Rhyme 0:1a2637f8e2dd 2 #include <string.h>
Rhyme 0:1a2637f8e2dd 3 #include <ctype.h>
Rhyme 0:1a2637f8e2dd 4 #include "vt100.h"
Rhyme 0:1a2637f8e2dd 5 #include "MSS.h"
Rhyme 0:1a2637f8e2dd 6 #include "dumb_i2c.h"
Rhyme 0:1a2637f8e2dd 7
Rhyme 0:1a2637f8e2dd 8 DUMB_I2C *i2c = 0 ;
Rhyme 0:1a2637f8e2dd 9 vt100 *tty = 0 ;
Rhyme 0:1a2637f8e2dd 10
Rhyme 0:1a2637f8e2dd 11 void doClose(void)
Rhyme 0:1a2637f8e2dd 12 {
Rhyme 0:1a2637f8e2dd 13 if (i2c != 0) {
Rhyme 0:1a2637f8e2dd 14 printf("Closing I2C at 0x%02X ... ", i2c->address()) ;
Rhyme 0:1a2637f8e2dd 15 delete i2c ;
Rhyme 0:1a2637f8e2dd 16 i2c = 0 ;
Rhyme 0:1a2637f8e2dd 17 printf("Done\n") ;
Rhyme 0:1a2637f8e2dd 18 }
Rhyme 0:1a2637f8e2dd 19 }
Rhyme 0:1a2637f8e2dd 20
Rhyme 0:1a2637f8e2dd 21 void doOpen(void)
Rhyme 0:1a2637f8e2dd 22 {
Rhyme 0:1a2637f8e2dd 23 uint8_t address ;
Rhyme 0:1a2637f8e2dd 24 scanf("%X", &address) ;
Rhyme 0:1a2637f8e2dd 25 if (i2c != 0) {
Rhyme 0:1a2637f8e2dd 26 doClose() ;
Rhyme 0:1a2637f8e2dd 27 }
Rhyme 0:1a2637f8e2dd 28 printf("Opening I2C at 0x%02X ... ", address) ;
Rhyme 0:1a2637f8e2dd 29 i2c = new DUMB_I2C(PIN_SDA, PIN_SCL, address) ;
Rhyme 0:1a2637f8e2dd 30 printf("Done\n") ;
Rhyme 0:1a2637f8e2dd 31 }
Rhyme 0:1a2637f8e2dd 32
Rhyme 0:1a2637f8e2dd 33 void doRead(void)
Rhyme 0:1a2637f8e2dd 34 {
Rhyme 0:1a2637f8e2dd 35 int addr ;
Rhyme 0:1a2637f8e2dd 36 int len ;
Rhyme 0:1a2637f8e2dd 37 uint8_t *data ;
Rhyme 0:1a2637f8e2dd 38 scanf("%X %X", &addr, &len) ;
Rhyme 0:1a2637f8e2dd 39 if (len > 0) {
Rhyme 0:1a2637f8e2dd 40 data = new uint8_t[len] ;
Rhyme 0:1a2637f8e2dd 41 }
Rhyme 0:1a2637f8e2dd 42 // i2c->read(addr, data, len) ;
Rhyme 0:1a2637f8e2dd 43 printf("0x%02X : ", (unsigned int)addr) ;
Rhyme 0:1a2637f8e2dd 44 for (int i = 0 ; i < len ; i++ ) {
Rhyme 0:1a2637f8e2dd 45 i2c->read(addr+i, &data[i], 1) ;
Rhyme 0:1a2637f8e2dd 46 printf("%02X ", data[i]) ;
Rhyme 0:1a2637f8e2dd 47 if (((i+1) < len)&&(((i+1)%0x10) == 0)) {
Rhyme 0:1a2637f8e2dd 48 printf("\n") ;
Rhyme 0:1a2637f8e2dd 49 printf("0x%02X : ", (unsigned int)(addr + i + 1)) ;
Rhyme 0:1a2637f8e2dd 50 }
Rhyme 0:1a2637f8e2dd 51 }
Rhyme 0:1a2637f8e2dd 52 printf("\n") ;
Rhyme 0:1a2637f8e2dd 53 }
Rhyme 0:1a2637f8e2dd 54
Rhyme 0:1a2637f8e2dd 55 void doWrite(void)
Rhyme 0:1a2637f8e2dd 56 {
Rhyme 0:1a2637f8e2dd 57 int addr ;
Rhyme 0:1a2637f8e2dd 58 uint8_t len ;
Rhyme 0:1a2637f8e2dd 59 uint8_t *data ;
Rhyme 0:1a2637f8e2dd 60 scanf("%X %X", addr, &data) ;
Rhyme 0:1a2637f8e2dd 61 i2c->write(addr, data, 1) ;
Rhyme 0:1a2637f8e2dd 62 }
Rhyme 0:1a2637f8e2dd 63
Rhyme 0:1a2637f8e2dd 64 void doStatus(void)
Rhyme 0:1a2637f8e2dd 65 {
Rhyme 0:1a2637f8e2dd 66 if (i2c == 0) {
Rhyme 0:1a2637f8e2dd 67 printf("i2c is not opened\n") ;
Rhyme 0:1a2637f8e2dd 68 } else {
Rhyme 0:1a2637f8e2dd 69 printf("i2c device at 0x%02X is opened\n", i2c->address()) ;
Rhyme 0:1a2637f8e2dd 70 }
Rhyme 0:1a2637f8e2dd 71 }
Rhyme 0:1a2637f8e2dd 72
Rhyme 0:1a2637f8e2dd 73 void doHelp(void)
Rhyme 0:1a2637f8e2dd 74 {
Rhyme 0:1a2637f8e2dd 75 printf("Simple I2C test program %s for %s\n", __DATE__, BOARD_NAME) ;
Rhyme 0:1a2637f8e2dd 76 printf("\n === usage ===\n") ;
Rhyme 0:1a2637f8e2dd 77 printf("open <7bit addr> : open i2c device at <7bit addr>\n") ;
Rhyme 0:1a2637f8e2dd 78 printf("close : close currently opened i2c\n") ;
Rhyme 0:1a2637f8e2dd 79 printf("read <addr> <len> : read <len> data from <addr>\n") ;
Rhyme 0:1a2637f8e2dd 80 printf("write <addr> <data> : write <data> to register <addr>\n") ;
Rhyme 0:1a2637f8e2dd 81 printf("status : print current status\n") ;
Rhyme 0:1a2637f8e2dd 82 printf("help : print this help\n") ;
Rhyme 0:1a2637f8e2dd 83 printf("\nPlease set local-echo to see what you are typing.\n") ;
Rhyme 0:1a2637f8e2dd 84 printf("\n") ;
Rhyme 0:1a2637f8e2dd 85 }
Rhyme 0:1a2637f8e2dd 86
Rhyme 0:1a2637f8e2dd 87 void doCommand(char *str)
Rhyme 0:1a2637f8e2dd 88 {
Rhyme 0:1a2637f8e2dd 89 switch(*str) {
Rhyme 0:1a2637f8e2dd 90 case 'o': case 'O': /* open */
Rhyme 0:1a2637f8e2dd 91 doOpen() ; break ;
Rhyme 0:1a2637f8e2dd 92 case 'c': case 'C': /* close */
Rhyme 0:1a2637f8e2dd 93 doClose() ; break ;
Rhyme 0:1a2637f8e2dd 94 case 'r': case 'R': /* read */
Rhyme 0:1a2637f8e2dd 95 doRead() ; break ;
Rhyme 0:1a2637f8e2dd 96 case 'w': case 'W': /* write */
Rhyme 0:1a2637f8e2dd 97 doWrite() ; break ;
Rhyme 0:1a2637f8e2dd 98 case 's': case 'S': /* status */
Rhyme 0:1a2637f8e2dd 99 doStatus() ; break ;
Rhyme 0:1a2637f8e2dd 100 default:
Rhyme 0:1a2637f8e2dd 101 doHelp() ; break ;
Rhyme 0:1a2637f8e2dd 102 }
Rhyme 0:1a2637f8e2dd 103 }
Rhyme 0:1a2637f8e2dd 104
Rhyme 0:1a2637f8e2dd 105 int main() {
Rhyme 0:1a2637f8e2dd 106 char cmd[32] ;
Rhyme 0:1a2637f8e2dd 107 tty = new vt100() ;
Rhyme 0:1a2637f8e2dd 108 tty->cls() ;
Rhyme 0:1a2637f8e2dd 109 doHelp() ;
Rhyme 0:1a2637f8e2dd 110 while(1) {
Rhyme 0:1a2637f8e2dd 111 printf("> ") ;
Rhyme 0:1a2637f8e2dd 112 scanf("%s", cmd) ;
Rhyme 0:1a2637f8e2dd 113 doCommand(cmd) ;
Rhyme 0:1a2637f8e2dd 114 }
Rhyme 0:1a2637f8e2dd 115 }