an jian
LPC812MAXdemoTest_revPA1
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LPC812MAXdemoTest_revPA1
by 
viniedodo jin
Diff: main.cpp
- Revision:
- 0:c2c6f009e2d1
- Child:
- 1:f7158ed0d3ae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Oct 13 03:42:55 2013 +0000
@@ -0,0 +1,309 @@
+#include "mbed.h"
+
+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() {
+ //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)
+ {
+ //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