Junichi Katsu
It is a program to turn on the LED serial two Jksoft Blue mbed Board. Jksoft Blue mbed Boardの２つのシリアルLEDを点灯させるプログラムです。
Revision 0:57df396a2de8, committed 2014-05-12
- Comitter:
- jksoft
- Date:
- Mon May 12 11:01:44 2014 +0000
- Commit message:
- First edition
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WS2812B/LEDStrip.h Mon May 12 11:01:44 2014 +0000 @@ -0,0 +1,6 @@ + +void tape_write (int d); +void tapeInit (int speed, int n); +void tapeSet (int n, int dat); +void tapeSet(int n, int red , int green , int blue); +void tapeSend ();
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WS2812B/LEDStrip_WS2812.cpp Mon May 12 11:01:44 2014 +0000
@@ -0,0 +1,128 @@
+/*
+ * WS2812 tape led IC
+ *
+ * 0.35us 0.8us (+-150ns)
+ * 0: |^^^^^|__________|
+ *
+ * 0.7us 0.6us (+-150ns)
+ * 1: |^^^^^^^^^^|_____|
+ *
+ * >50us
+ * RESET: |________________|
+ */
+#include "mbed.h"
+#include "LEDStrip.h"
+
+SPI tape(p11, NC, NC);
+
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+ LPC_SSP_TypeDef *_ssp = LPC_SSP0;
+#elif defined(TARGET_LPC11U24)
+ LPC_SSPx_Type *_ssp = LPC_SSP1;
+#endif
+
+int num = 100;
+int *data;
+volatile int busy = 0, wakeup = 0;
+
+
+extern "C"
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+void SSP0_IRQHandler() {
+#elif defined(TARGET_LPC11U24)
+void SSP1_IRQHandler() {
+#endif
+ static int addr = 0, bit = 0x800000;
+repeat:
+ if (busy) {
+ // led data
+ while (_ssp->SR & (1<<1)) { // TNF
+ if (data[addr] & bit) {
+ // 1
+ //_ssp->DR = 0x01f;
+ _ssp->DR = 0x007;
+ } else {
+ // 0
+ _ssp->DR = 0x07f;
+ }
+ bit = bit >> 1;
+ if (bit == 0) {
+ bit = 0x800000;
+ addr ++;
+ if (addr >= num) {
+ addr = 0;
+ busy = 0;
+ goto repeat;
+ }
+ }
+ }
+ } else {
+ // blank
+ while (_ssp->SR & (1<<1)) { // TNF
+ _ssp->DR = 0xfff;
+ if (addr < 50) {
+ addr ++;
+ } else {
+ addr = 0;
+ if (wakeup) {
+ busy = 1;
+ wakeup = 0;
+ goto repeat;
+ }
+ }
+ }
+ }
+}
+
+void tapeInit (int freq, int n) {
+
+ num = n;
+// data = new int(num);
+ data = (int*)malloc(sizeof(int) * num);
+ for (int i = 0; i < num; i ++) {
+ data[i] = 0;
+ }
+
+ tape.format(10, 1);
+ if (freq) {
+ tape.frequency(freq * 1000);
+ } else {
+ tape.frequency(8000000);
+ }
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+ NVIC_SetVector(SSP0_IRQn, (uint32_t)SSP0_IRQHandler);
+ NVIC_SetPriority(SSP0_IRQn, 0);
+ NVIC_EnableIRQ(SSP0_IRQn);
+#elif defined(TARGET_LPC11U24)
+ NVIC_SetVector(SSP1_IRQn, (uint32_t)SSP1_IRQHandler);
+ NVIC_SetPriority(SSP1_IRQn, 0);
+ NVIC_EnableIRQ(SSP1_IRQn);
+#endif
+ _ssp->IMSC |= (1<<3); // TXIM
+}
+
+void tapeSet (int n, int dat) {
+ if (n >= 0 && n < num) {
+ // RGB -> GRB
+ data[n] = ((dat & 0xff0000) >> 8) | ((dat & 0xff00) << 8) | (dat & 0xff);
+ }
+}
+void tapeSet(int n, int red , int green , int blue) {
+ if (n >= 0 && n < num) {
+ // RGB -> GRB
+ data[n] = ((red & 0xff) << 8) | ((green & 0xff) << 16) | (blue & 0xff);
+ }
+}
+
+void tapeSend () {
+ if (busy) {
+ while (busy);
+ wait_us(50);
+ }
+ wakeup = 1;
+ while (wakeup);
+}
+
+int tapeGet (int n) {
+ return ((data[n] & 0xff0000) >> 8) | ((data[n] & 0xff00) << 8) | (data[n] & 0xff);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon May 12 11:01:44 2014 +0000
@@ -0,0 +1,32 @@
+/**
+ * Jksoft Blue mbed Board
+ *
+ * Serial LED test program
+ *
+ * Copyright (C) 2014 Junichi Katsu (JKSOFT)
+ */
+#include "mbed.h"
+#include "LEDStrip.h"
+
+
+int main() {
+ tapeInit(0, 2); // freq( 0:default ) , SerialLED num
+
+ while(1)
+ {
+ for( int i=0 ; i < 256 ; i++ )
+ {
+ tapeSet(0,i,0,0); // LED No , Red , Green , Blue
+ tapeSet(1,0,i,0); // LED No , Red , Green , Blue
+ tapeSend(); // Send to LED
+ wait_ms(20);
+ }
+ for( int i=255 ; i > 0 ; i-- )
+ {
+ tapeSet(0,i,0,0); // LED No , Red , Green , Blue
+ tapeSet(1,0,i,0); // LED No , Red , Green , Blue
+ tapeSend(); // Send to led
+ wait_ms(20);
+ }
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon May 12 11:01:44 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8a40adfe8776 \ No newline at end of file