Kazuki Yamamoto
/
uart_i2c_conv
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Revision 56:2c0697032c80, committed 2014-12-10
- Comitter:
- Kazuki Yamamoto
- Date:
- Wed Dec 10 17:12:51 2014 +0900
- Parent:
- 55:10ba2528528b
- Child:
- 57:57fcd2c3648a
- Commit message:
- [ LPC11UXX ] R,W commands implemented
Changed in this revision
| LPC11UXX/main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/LPC11UXX/main.cpp Tue Dec 09 17:52:26 2014 +0900
+++ b/LPC11UXX/main.cpp Wed Dec 10 17:12:51 2014 +0900
@@ -3,6 +3,7 @@
#include "mbed.h"
#include "I2C_FmPlus.h"
+#define isuse_USB_SERIAL
#if defined(TARGET_LPC11U35_401) || defined(TARGET_LPC11U35_501)
#include "USBSerial.h"
@@ -11,25 +12,51 @@
Serial pc(USBTX, USBRX);
#endif
I2C_FmPlus dev1( P0_5, P0_4 );
-I2C_FmPlus* dev = &dev1;
int main()
{
- I2C* dev=&dev1;
+ I2C_FmPlus* dev = &dev1;
+#ifndef isuse_USB_SERIAL
pc.baud(115200);
+#endif
bool s = false;
dev1.frequency(1000000);//1M
- int ack=0;
- int plength=0;
+ int ack = 0;
+ int plength = 0;
char recieve[256];
char send[256];
- char read=0;
- int address=0,length=0,channel=0;
- enum reg {
- I2C0adr='0',
+ char read = 0;
+ int address = 0;
+ int data = 0;
+ int _data = 0;
+ int length = 0;
+ int channel = 0;
+ bool CE = false;
+ enum channel_e {
+ CH0 = '0',
+ CH1 = '1',
+ CH2 = '2',
+ CH3 = '3',
};
+ enum register_e {
+ CHIP_ID = '0',
+ GPIO_STAT = '1',
+ GPIO_CONF = '2',
+ };
+ enum chipID_e {
+ ID_LPC824 = '0',
+ ID_LPC1768 = '1',
+ ID_LPC11UXX = '2',
+ };
+ uint8_t chip_id=ID_LPC11UXX;
+ uint8_t registers[]={
+ chip_id,
+ 0b00000000, // all 0
+ 0b00000000, // all input
+ };
+
//"C0P"
//"C1P"
@@ -59,7 +86,6 @@
switch(channel) {
case I2C0adr:
{
- bus=~0x01;
channel='0';
dev=&dev1;
break;
@@ -81,48 +107,116 @@
if( ack >= 4){ //valid packet
address = 0xff & (recieve[i+1] << 4 | (recieve[i+2] & 0x0F));
length = 0xff & (recieve[i+3] << 4 | (recieve[i+4] & 0x0F));
+/* hidden
+ dev->start();
+ ack=dev->write(address);
+*/
+ if( (address&0x01)) {//read
+ dev->read(address, send, length, false); //added
+ s=false; //added
+/* hidden
+ for(int j=0; j<length; j++) {
+ send[j] = dev->read(1);
+ }
+*/
+ i+=(5);
+ } else {//write
+ for(int j=0; j < (length * 2); j+=2) {
+ ack = dev->write( 0xff&(recieve[5+j] << 4 | (recieve[6+j] & 0x0F)) );
+ *(send+(j/2)) = ack; //added
+ }
+ dev->write(address, send, length, true); //added
+ i+=(5 + length * 2);
+ length=0;
+ }
}else{
pc.printf("bad packet! %d, %d, %02X, %d\n\r",plength,i,recieve[(i+2)]&0x0F,ack);
- i = plength + 1;
- break;
- }
- dev->start();
- ack=dev->write(address);
- if( (address&0x01)) {//read
- for(int j=0; j<length; j++) {
- send[j] = dev->read(1);
- }
- i+=(5);
- } else {//write
- for(int j=0; j < (length * 2); j+=2) {
- ack = dev->write( 0xff&(recieve[5+j] << 4 | (recieve[6+j] & 0x0F)) );
- }
- i+=(5 + length * 2);
- length=0;
+ i = plength;
}
break;
}
case 'P':
+ {
if(s){
dev->stop();
- s=false;
+ s = false;
}
- i=plength;
+ i = plength;
for(int j=0; j<length; j++) {
pc.printf("%02X,",send[j]);
}
pc.printf("ok\n\r");
break;
+ }
case 'R':
{
+ length = plength - 2;
+ for(int j=0; j<length; j++){
+ address = recieve[1+j];
+ switch(address){
+ case CHIP_ID:
+ {
+ *(send+j) = registers[CHIP_ID];
+ break;
+ }
+ case GPIO_STAT:
+ {
+ *(send+j) = registers[GPIO_STAT];
+ break;
+ }
+ case GPIO_CONF:
+ {
+ *(send+j) = registers[GPIO_CONF];
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+ }
+ i += length;
pc.printf("command R is not implemented\n\r");
- i=plength;
break;
}
case 'W':
{
+ length = plength - 2;
+ if(length < 3){
+ pc.printf("bad packet! %d\n\r",length);
+ i = plength + 1;
+ }else{
+ for(int j=0; j<length; j+=3){
+ address = recieve[i+1+j];
+ data = 0xff & (recieve[i+1+j] << 4 | (recieve[i+2+j] & 0x0F));
+ switch(address){
+ case CHIP_ID:
+ {
+ //READ ONLY: do nothing
+ *(send+j) = registers[CHIP_ID];
+ break;
+ }
+ case GPIO_STAT:
+ {
+ //READ ONLY from this command: do nothing
+ *(send+j) = registers[GPIO_STAT];
+ break;
+ }
+ case GPIO_CONF:
+ {
+ registers[GPIO_CONF] = data;
+ *(send+j) = registers[GPIO_CONF];
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+ }
+ }
+ i += length;
pc.printf("command W is not implemented\n\r");
- i=plength;
break;
}
case 'I':
@@ -143,6 +237,18 @@
i=plength;
break;
}
+ case 'E':
+ {
+ pc.printf("command E is not implemented\n\r");
+ i=plength;
+ break;
+ }
+ case 'V':
+ {
+ pc.printf("command V is not implemented\n\r");
+ i=plength;
+ break;
+ }
default:
{
pc.printf("command ? is not implemented\n\r");