Kazuki Yamamoto
/
uart_i2c_conv
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Diff: LPC824/main.cpp
- Revision:
- 22:946c08f6daff
- Parent:
- 19:93814b431bf5
- Child:
- 24:223a68f33f09
--- a/LPC824/main.cpp Thu Dec 11 21:21:39 2014 +0900
+++ b/LPC824/main.cpp Fri Dec 12 02:56:24 2014 +0900
@@ -2,21 +2,35 @@
*/
#include "mbed.h"
+#define QUAD_I2C
Serial pc(USBTX,USBRX);
-/*
+/** replace
Serial pc(P0_4, P0_0);
*/
+
I2C dev1(I2C_SDA, I2C_SCL);//11,10 hard coded
+#ifdef QUAD_I2C
I2C dev2(P0_6, P0_14);//6,14 | A0, A1
I2C dev3(P0_23, P0_22);//23,22 | A2, A3
I2C dev4(P0_21, P0_20);//21,20 | A4, A5
-/*
+/** replace
I2C dev2(P0_16, P0_27);
I2C dev3(P0_26, P0_25);
I2C dev4(P0_24, P0_15);
*/
+#else
+DigitalInOut _GPIO10(P0_15);
+DigitalInOut _GPIO11(P0_24);
+DigitalInOut _GPIO12(P0_25);
+DigitalInOut _GPIO13(P0_26);
+DigitalInOut _GPIO14(P0_27);
+DigitalInOut _GPIO15(P0_16);
+DigitalInOut _GPIO16(P0_28);
+DigitalInOut _GPIO17(P0_12);
+#endif
+
DigitalInOut _GPIO0(D0); // P0_0
DigitalInOut _GPIO1(D1); // P0_4
DigitalInOut _GPIO2(D2); // P0_19
@@ -25,22 +39,15 @@
DigitalInOut _GPIO5(D7); // P0_17
DigitalInOut _GPIO6(D8); // P0_13
DigitalInOut _GPIO7(D10); // P0_15
-/*
-DigitalInOut _GPIO00(P0_13);
-DigitalInOut _GPIO01(P0_17);
-DigitalInOut _GPIO02(P0_18);
-DigitalInOut _GPIO03(P0_19);
-DigitalInOut _GPIO04(P0_20);
-DigitalInOut _GPIO05(P0_21);
-DigitalInOut _GPIO06(P0_22);
-DigitalInOut _GPIO07(P0_23);
-
-DigitalInOut _GPIO10(P0_14);
-DigitalInOut _GPIO11(P0_1);
-//DigitalInOut _GPIO12( );
-//DigitalInOut _GPIO13( );
-//DigitalInOut _GPIO14( );
-//DigitalInOut _GPIO15( );
+/** replace
+DigitalInOut _GPIO00(P0_17);
+DigitalInOut _GPIO01(P0_18);
+DigitalInOut _GPIO02(P0_19);
+DigitalInOut _GPIO03(P0_20);
+DigitalInOut _GPIO04(P0_21);
+DigitalInOut _GPIO05(P0_22);
+DigitalInOut _GPIO06(P0_23);
+DigitalInOut _GPIO07(P0_14);
*/
SPI _spi(D11, D12, D13); // mosi, miso, sclk
@@ -49,8 +56,6 @@
DigitalOut _cs(P0_9) // CS
*/
-/**
-*/
//Table 3. ASCII commands supported by SC18IM700
//ASCII command Hex value Command function
//[X] S 0x53 I2C-bus START
@@ -76,8 +81,8 @@
"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"
+"I| '0'| P"
+"O| '0'| 0x_a _a| P"
*/
int main()
{
@@ -91,10 +96,26 @@
bool s = false;
dev1.frequency(800000);//800k not work at 1M? too large pullup?
+#ifdef QUAD_I2C
dev2.frequency(400000);//400k
dev3.frequency(400000);//400k
dev4.frequency(400000);//400k
-
+#else
+ DigitalInOut* gpio1[]={
+ &_GPI10,
+ &_GPI11,
+ &_GPI12,
+ &_GPI13,
+ &_GPI14,
+ &_GPI15,
+ &_GPI16,
+ &_GPI17,
+ };
+ for(int k=0; k<8; k++){
+ gpio1[k]->input();
+ gpio1[k]->mode(PullUp);
+ }
+#endif
DigitalInOut* gpio0[]={
&_GPIO0,
&_GPIO1,
@@ -173,8 +194,15 @@
};
enum register_e {
CHIP_ID = '0',
- GPIO_STAT = '1',
- GPIO_CONF = '2',
+ GPIO0_STAT = '1',
+ GPIO1_STAT = '2',
+ GPIO0_CONF = '3',
+ GPIO1_CONF = '4',
+ REG5,
+ REG6,
+ REG7,
+ REG8,
+ REG9,
};
enum chipID_e {
ID_LPC824 = '0',
@@ -186,8 +214,8 @@
chip_id,
0xBB,
0xCC,
-// 0b00000000, // all 0
-// 0b00000000, // all input
+ 0xDD,
+ 0xEE,
};
int i=0;
@@ -216,6 +244,7 @@
dev=&dev1;
break;
}
+#ifdef QUAD_I2C
case CH1:
{
channel = CH1;
@@ -234,6 +263,7 @@
dev=&dev4;
break;
}
+#endif
default:
{
channel = CH0;
@@ -252,7 +282,7 @@
address = 0xff & (recieve[i+1] << 4 | (recieve[i+2] & 0x0F));
length = 0xff & (recieve[i+3] << 4 | (recieve[i+4] & 0x0F));
- if( (address&0x01)) { //read
+ if(address & 0x01) { //read
dev->read(address, send, length, false); //added
i+=(5);
} else { // write
@@ -297,32 +327,37 @@
case CHIP_ID:
{
data = chip_id;
-// send[j] = chip_id;
+ break;
+ }
+ case GPIO0_STAT:
+ {
+ data = registers[GPIO0_STAT-'0'];
break;
}
- case GPIO_STAT:
+ case GPIO0_CONF:
{
- data = registers[GPIO_STAT-'0'];
-// send[j] = (char)data;
+ data = registers[GPIO0_CONF-'0'];
break;
}
- case GPIO_CONF:
+ case GPIO1_STAT:
{
- data = registers[GPIO_CONF-'0'];
-// send[j] = (char)data;
+ data = registers[GPIO1_STAT-'0'];
+ break;
+ }
+ case GPIO1_CONF:
+ {
+ data = registers[GPIO1_CONF-'0'];
break;
}
default:
{
data = 0xAA;
-// send[j] = 0xAA;
break;
}
}
send[j] = (char)data;
}
i += (length+1);
-// pc.printf("command R is not implemented, ");
}
break;
}
@@ -342,20 +377,17 @@
{
//READ ONLY: do nothing
data = registers[CHIP_ID-'0'];
-// *(send+j) = registers[CHIP_ID-'0'];
break;
}
- case GPIO_STAT:
+ case GPIO0_STAT:
{
//READ ONLY from this command: do nothing
- data = registers[GPIO_STAT-'0'];
-// *(send+j) = registers[GPIO_STAT-'0'];
+ data = registers[GPIO0_STAT-'0'];
break;
}
- case GPIO_CONF:
+ case GPIO0_CONF:
{
- registers[GPIO_CONF-'0'] = data;
-// data = 0;
+ registers[GPIO0_CONF-'0'] = data;
for(int k=0; k<8; k++){
if(data&0x01){//output
gpio0[k]->output();
@@ -365,8 +397,30 @@
}
data >>= 1;
}
- data = registers[GPIO_CONF-'0'];
-// *(send+j) = registers[GPIO_CONF-'0'];
+ data = registers[GPIO0_CONF-'0'];
+ break;
+ }
+ case GPIO1_STAT:
+ {
+ //READ ONLY from this command: do nothing
+ data = registers[GPIO1_STAT-'0'];
+ break;
+ }
+ case GPIO1_CONF:
+ {
+ registers[GPIO1_CONF-'0'] = data;
+#ifndef QUAD_I2C
+ for(int k=0; k<6; k++){
+ if(data&0x01){//output
+ gpio1[k]->output();
+ }else{//input
+ gpio1[k]->input();
+ gpio1[k]->mode(PullUp);
+ }
+ data >>= 1;
+ }
+#endif
+ data = registers[GPIO1_CONF-'0'];
break;
}
default:
@@ -379,7 +433,6 @@
i += length+1;
length /= 3;
}
-// pc.printf("command W is not implemented, ");
break;
}
case CMD_I:
@@ -395,7 +448,7 @@
_data = gpio0[j]->read();
data |= (_data << j);
}
- registers[GPIO_STAT-'0'] = data;
+ registers[GPIO0_STAT-'0'] = data;
send[0] = data;
length = 1;
}
@@ -412,7 +465,7 @@
length = 0;
}else{
data = 0xff & (recieve[i+1] << 4 | (recieve[i+2] & 0x0F));
- _data = registers[GPIO_CONF-'0'];
+ _data = registers[GPIO0_CONF-'0'];
send[0] = (char)data;
for(int j=0; j<8; j++){
if(_data&0x01){ // output