XD DONG
The example program is LPC812MAXdemo board default program supplied by mbed.org
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Mbed
Revision 1:7620606cdb4e, committed 2013-11-06
- Comitter:
- okwh
- Date:
- Wed Nov 06 15:20:37 2013 +0000
- Parent:
- 0:7dec7e9ac085
- Commit message:
- 1st default program
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Fri Oct 11 12:42:44 2013 +0000
+++ b/main.cpp Wed Nov 06 15:20:37 2013 +0000
@@ -1,12 +1,283 @@
#include "mbed.h"
-DigitalOut myled(LED1);
+DigitalOut ledRed(LED_RED);
+DigitalOut ledGreen(LED_GREEN);
+DigitalOut ledBlue(LED_BLUE);
+
+int flashPattern = 0;
+
+const unsigned char I2C_ADDR_PCF8591T = 0x9E;
+const unsigned char I2C_ADDR_PCA9672PW = 0x46;
+
+const unsigned char LED_ON = 0;
+const unsigned char LED_OFF = 1;
+bool keyPressed;
+char response[1];
+
+I2C m_i2c(P0_10, P0_11);
+
+unsigned char i2c_wait(int ms)
+{
+ for(int n=0; n<ms; n+=50) {
+ //read PCA9672PW
+ if (m_i2c.read(I2C_ADDR_PCA9672PW, response, 1) == 0) {
+ //check if push-button pressed (bit #7 = 0)
+ if ((keyPressed == false) && ((response[0] & 0x80) == 0))
+ return 1;
+ } else {
+ //error reading from I2C device
+ while(1) {
+ for(int i=0; i<10; i++) {
+ ledBlue = LED_ON;
+ wait(0.05);
+ ledBlue = LED_OFF;
+ wait(0.05);
+ }
+ wait(1.0);
+ }
+ }
+ wait(0.05);
+ }
+ return 0;
+}
-int main() {
+int main()
+{
+ //init RGB-LED to be off
+ ledRed = LED_OFF;
+ ledGreen = LED_OFF;
+ ledBlue = LED_OFF;
+
+ //test i2C connection with PCF8591T (1.0.0.1.1.1.1.rw)
+ const char command1[] = {0x00};
+ if (m_i2c.write(I2C_ADDR_PCF8591T, command1, 1) != 0) {
+ while(1) {
+ for(int i=0; i<10; i++) {
+ ledRed = LED_ON;
+ wait(0.05);
+ ledRed = LED_OFF;
+ wait(0.05);
+ }
+ wait(1.0);
+ }
+ }
+
+ //test i2C connection with PCA9672PW (0.1.0.0.0.1.1.rw)
+ const char command2[] = {0xff};
+ if (m_i2c.write(I2C_ADDR_PCA9672PW, command2, 1) != 0) {
+ while(1) {
+ for(int i=0; i<10; i++) {
+ ledBlue = LED_ON;
+ wait(0.05);
+ ledBlue = LED_OFF;
+ wait(0.05);
+ }
+ wait(1.0);
+ }
+ }
+
+ //startup flash behaviour
+ for(int i=0; i<10; i++) {
+ ledGreen = LED_ON;
+ wait(0.05);
+ ledGreen = LED_OFF;
+ wait(0.05);
+ }
+ wait(1.0);
+
+ //enter forever loop, change RGB flash patterns with user push-button
+ keyPressed = false;
+ i2c_wait(1);
while(1) {
- myled = 1;
- wait(0.2);
- myled = 0;
- wait(0.2);
+ //read user push-button
+#if 1
+ i2c_wait(1);
+ //check if push-button pressed (bit #7 = 0)
+ if ((keyPressed == false) && ((response[0] & 0x80) == 0)) {
+ keyPressed = true;
+ flashPattern++;
+ }
+
+ //check if push-button released (bit #7 = 1)
+ else if ((keyPressed == true) && ((response[0] & 0x80) != 0))
+ keyPressed = false;
+#else
+ if (m_i2c.read(I2C_ADDR_PCA9672PW, response, 1) == 0) {
+ //check if push-button pressed (bit #7 = 0)
+ if ((keyPressed == false) && ((response[0] & 0x80) == 0)) {
+ keyPressed = true;
+ flashPattern++;
+ ledRed = LED_OFF;
+ ledGreen = LED_OFF;
+ ledBlue = LED_OFF;
+ }
+
+ //check if push-button released (bit #7 = 1)
+ else if ((keyPressed == true) && ((response[0] & 0x80) != 0))
+ keyPressed = false;
+ }
+ //error reading from I2C device
+ else {
+ while(1) {
+ for(int i=0; i<10; i++) {
+ ledBlue = LED_ON;
+ wait(0.05);
+ ledBlue = LED_OFF;
+ wait(0.05);
+ }
+ wait(1.0);
+ }
+ }
+#endif
+ //flash RGB-LED according to pattern
+ switch(flashPattern) {
+ case 0:
+ ledRed = LED_ON;
+ if (i2c_wait(80) != 0) break;
+ ledRed = LED_OFF;
+ if (i2c_wait(500) != 0) break;
+
+ ledGreen = LED_ON;
+ if (i2c_wait(15) != 0) break;
+ ledGreen = LED_OFF;
+ if (i2c_wait(550) != 0) break;
+
+ ledBlue = LED_ON;
+ if (i2c_wait(80) != 0) break;
+ ledBlue = LED_OFF;
+ if (i2c_wait(500) != 0) break;
+ break;
+ case 1:
+ for(float a=0; a<0.01; a+=0.0004) {
+ ledGreen = LED_ON;
+ wait(a/2);
+ ledGreen = LED_OFF;
+ wait(0.01-a);
+ }
+ ledGreen = LED_ON;
+ if (i2c_wait(1) != 0) break;
+ for(float a=0.01; a>0.0; a-=0.0002) {
+ ledGreen = LED_ON;
+ wait(a/2);
+ ledGreen = LED_OFF;
+ wait(0.01-a);
+ }
+ if (i2c_wait(400) != 0) break;
+ break;
+ case 2:
+ ledRed = LED_ON;
+ if (i2c_wait(150) != 0) break;
+ ledRed = LED_OFF;
+ if (i2c_wait(150) != 0) break;
+
+ ledGreen = LED_ON;
+ if (i2c_wait(100) != 0) break;
+ ledGreen = LED_OFF;
+
+ ledBlue = LED_ON;
+ if (i2c_wait(150) != 0) break;
+ ledBlue = LED_OFF;
+ break;
+ case 3:
+ ledRed = LED_ON;
+ ledGreen = LED_ON;
+ ledBlue = LED_ON;
+ if (i2c_wait(10) != 0) break;
+
+ ledGreen = LED_OFF;
+ ledBlue = LED_OFF;
+ ledRed = LED_OFF;
+ if (i2c_wait(500) != 0) break;
+ break;
+ case 4:
+ for(float a=0; a<0.01; a+=0.0008) {
+ ledRed = LED_ON;
+ wait(a);
+ ledRed = LED_OFF;
+ wait(0.01-a);
+ }
+ ledRed = LED_ON;
+ if (i2c_wait(1) != 0) break;
+ for(float a=0; a<0.01; a+=0.0008) {
+ ledBlue = LED_ON;
+ wait(a);
+ ledBlue = LED_OFF;
+ wait(0.01-a);
+ }
+ ledBlue = LED_ON;
+ if (i2c_wait(1) != 0) break;
+ for(float a=0.01; a>0.0; a-=0.0008) {
+ ledRed = LED_ON;
+ wait(a);
+ ledRed = LED_OFF;
+ wait(0.01-a);
+ }
+ if (i2c_wait(1) != 0) break;
+ for(float a=0.01; a>0.0; a-=0.0008) {
+ ledBlue = LED_ON;
+ wait(a);
+ ledBlue = LED_OFF;
+ wait(0.01-a);
+ }
+ if (i2c_wait(200) != 0) break;
+ break;
+ default:
+ flashPattern = 0;
+ break;
+ }
}
}
+
+#if 0
+//https://github.com/mbedmicro/mbed/tree/master/libraries/mbed/vendor/NXP/capi/LPC812
+P0_0 = 0,
+P0_1 = 1,
+P0_2 = 2,
+P0_3 = 3,
+P0_4 = 4,
+P0_5 = 5,
+P0_6 = 6,
+P0_7 = 7,
+P0_8 = 8,
+P0_9 = 9,
+P0_10 = 10, //SDA
+P0_11 = 11, //SCL
+P0_12 = 12,
+P0_13 = 13,
+P0_14 = 14,
+P0_15 = 15,
+P0_16 = 16,
+P0_17 = 17,
+
+D0 = P0_0,
+D1 = P0_4,
+D2 = P0_6,
+D3 = P0_8,
+D4 = P0_9,
+
+D7 = P0_7,
+D8 = P0_17,
+D9 = P0_16,
+D10 = P0_13,
+D11 = P0_14,
+D12 = P0_15,
+D13 = P0_12,
+
+A4 = P0_10,
+A5 = P0_11,
+
+// LPC800-MAX board
+LED_RED = P0_7,
+LED_GREEN = P0_17,
+LED_BLUE = P0_16,
+
+// mbed original LED naming
+LED1 = LED_BLUE,
+LED2 = LED_GREEN,
+LED3 = LED_RED,
+LED4 = LED_RED,
+
+// Serial to USB pins
+USBTX = P0_6,
+USBRX = P0_1,
+#endif