Kazuki Yamamoto
/
uart_i2c_conv
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Diff: LPC824/main.cpp
- Revision:
- 11:0d8359a6e2c2
- Parent:
- 9:844e301ab0fd
- Child:
- 12:db621ae6a076
--- a/LPC824/main.cpp Thu Dec 04 17:39:24 2014 +0900
+++ b/LPC824/main.cpp Thu Dec 04 19:46:23 2014 +0900
@@ -9,14 +9,16 @@
I2C dev3(P0_23, P0_22);//23,22
I2C dev4(P0_21, P0_20);//21,20
-//DigitalInOut _GPIO0(D0);
-//DigitalInOut _GPIO1(D1);
-//DigitalInOut _GPIO2(D2);
-//DigitalInOut _GPIO3(D3);
-//DigitalInOut _GPIO4(D4);
-//DigitalInOut _GPIO5(D5);
-//DigitalInOut _GPIO6(D6);
-//DigitalInOut _GPIO7(D7);
+/*
+DigitalInOut _GPIO0(D0);
+DigitalInOut _GPIO1(D1);
+DigitalInOut _GPIO2(D2);
+DigitalInOut _GPIO3(D3);
+DigitalInOut _GPIO4(D4);
+DigitalInOut _GPIO5(D5);
+DigitalInOut _GPIO6(D6);
+DigitalInOut _GPIO7(D7);
+*/
//Table 3. ASCII commands supported by SC18IM700
//ASCII command Hex value Command function
@@ -31,6 +33,20 @@
//[_] E 0x45 enable chip
//[_] V 0x__ enable VDDIO output to chip
+//"C0P"
+//"C1P"
+//"C2P"
+//"C3P"
+//"S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P"
+//"S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| S| 0x_8 _1| 0x_0 _4| P"
+//"S| 0x_8 _1| 0x_0 _4| P"
+//"R| '0'| P"
+//"R| '0'| '1'| ...| P"
+//"W| '0' 0x_a _a| P"
+//"W| '0' 0x_a _a| '1' 0x_b _b| ...| P"
+//"I| P"
+//"O| 0x_a _a| P"
+
int main()
{
I2C* dev=&dev1;
@@ -46,13 +62,26 @@
dev2.frequency(400000);//400k
dev3.frequency(400000);//400k
dev4.frequency(400000);//400k
-
+/*
+ DigitalInOut* gpio[]={
+ &_GPIO0,
+ &_GPIO1,
+ &_GPIO2,
+ &_GPIO3,
+ &_GPIO4,
+ &_GPIO5,
+ &_GPIO6,
+ &_GPIO7,
+ };
+*/
int ack=0;
int plength=0;
char recieve[256];
char send[256];
char read=0;
int address=0;
+ int data=0;
+ int _data=0;
int length=0;
int channel=0;
bool CE=false;
@@ -79,20 +108,6 @@
0b00000000,
};
-//"C0P"
-//"C1P"
-//"C2P"
-//"C3P"
-//"S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| P"
-//"S| 0x_8 _0| 0x_0 _4| 0x_D _E _A _D _B _E _A _F| S| 0x_8 _1| 0x_0 _4| P"
-//"S| 0x_8 _1| 0x_0 _4| P"
-//"R| '0'| P"
-//"R| '0'| '1'| P"
-//"W| '0' 0x_a _a| P"
-//"W| '0' 0x_a _a| '1' 0x_b _b| P"
-//"I| P"
-//"O| 0x_a _a| P"
-
int i=0;
while(1) {
while(true) {
@@ -152,32 +167,31 @@
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;
- }
-/* 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;
+ i = plength;
}
break;
}
@@ -185,9 +199,9 @@
{
if(s){
dev->stop();
- s=false;
+ s = false;
}
- i=plength;
+ i = plength;
for(int j=0; j<length; j++) {
pc.printf("%02X,",send[j]);
}
@@ -196,14 +210,80 @@
}
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:
+ {
+ for(int k=1; k<256; k<<=1){
+ if(registers[GPIO_CONF] & k){ //output
+ (data&k) ? _data|=k : _data&=~k;
+ }else{
+ ;
+ }
+ }
+ registers[GPIO_STAT] = _data;
+ *(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':