Jasper Wallace
The London Hackspace bandwidth meter
Dependencies: LPD8806 MODSERIAL mbed picojson
See:
- https://github.com/londonhackspace/net-o-meter
- http://wiki.london.hackspace.org.uk/view/Projects/BandwidthMeter
Revision 3:7fca72f96711, committed 2012-08-23
- Comitter:
- Jasper
- Date:
- Thu Aug 23 00:17:04 2012 +0000
- Parent:
- 2:81155674a852
- Child:
- 4:7087ea3d13c1
- Commit message:
- got the vfd working
Changed in this revision
--- a/LPD8806.lib Sun Jun 10 23:05:12 2012 +0000 +++ b/LPD8806.lib Thu Aug 23 00:17:04 2012 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/ehbmbed2/libraries/LPD8806/m2abi7 \ No newline at end of file +http://mbed.org/users/ehbmbed2/code/LPD8806/#6ebd3ac910b6
--- a/main.cpp Sun Jun 10 23:05:12 2012 +0000
+++ b/main.cpp Thu Aug 23 00:17:04 2012 +0000
@@ -1,12 +1,16 @@
#include "mbed.h"
+#include "ctype.h"
#include "LPD8806.h"
+#include "vfd.h"
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
+Ethernet eth;
+
/* talk to the world */
Serial pc(USBTX, USBRX);
@@ -66,6 +70,11 @@
setPixelsBottom(14, quantity < 16 ? quantity : 16, strip.Color(127, 0, 0));
}
+void emf_blue() {
+ setPixelsBottom(0, 15, strip.Color(0, 161, 228));
+ setPixelsTop(0, 15, strip.Color(0, 161, 228));
+}
+
#define s_looking 1
#define s_top 2
#define s_bottom 3
@@ -75,6 +84,28 @@
int i, state = s_looking, tmp = 0, col = 1;
bool changed = false;
char got;
+ char buf[0x600];
+ char mad[6];
+
+ pc.printf("Hello!\r\n");
+
+ vfd_init();
+ wait_ms(1);
+
+ for (i = 'a'; i < 'a' + 25 ; i++){
+ vfd_data(i);
+ }
+ for (i = 'a'; i < 'a' + 25 ; i++){
+ vfd_data(i);
+ }
+ for (i = 'a'; i < 'a' + 25 ; i++){
+ vfd_data(i);
+ }
+
+/* eth.init();
+ eth.connect();
+ printf("IP Address is %s\n", eth.getIPAddress());
+ eth.disconnect();*/
strip.begin();
@@ -89,8 +120,9 @@
if (pc.readable()) {
got = pc.getc();
- pc.putc(got); // remote echo
-
+ if (isprint(got))
+ pc.putc(got); // remote echo
+ vfd_data(got);
changed = false;
if (got == '\n' || got == '\r') {
@@ -103,12 +135,21 @@
col = 1;
if (t > 16) t = 16;
if (b > 16) b = 16;
- printf("t: %d b: %d\n", t, b);
+ printf("t: %d b: %d\r\n", t, b);
changed = true;
+ printf("link: %d\r\n", eth.link());
+ if (eth.link()) {
+ eth.address(mad);
+ printf("mymac: %02X:%02X:%02X:%02X:%02X:%02X\r\n",
+ mad[0], mad[1], mad[2], mad[3], mad[4], mad[5]);
+ }
} else if (got == 'b') {
state = s_bottom;
} else if (got == 't') {
state = s_top;
+ } else if (got == 'e') {
+ emf_blue();
+ strip.show();
} else if (got <= '9' and got >= '0') {
tmp += (got - '0') * col;
col = col * 10;
@@ -121,5 +162,16 @@
bottom_strip(b);
strip.show();
}
+
+ int size = eth.receive();
+/* if(size > 0) {
+ eth.read(buf, size);
+ printf("Destination: %02X:%02X:%02X:%02X:%02X:%02X\r\n",
+ buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
+ printf("Source: %02X:%02X:%02X:%02X:%02X:%02X\r\n",
+ buf[6], buf[7], buf[8], buf[9], buf[10], buf[11]);
+ printf("Size: %d\r\n", size);
+ }*/
+
}
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Aug 23 00:17:04 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/10b9abbe79a6 \ No newline at end of file
--- a/mbed.lib Sun Jun 10 23:05:12 2012 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/projects/libraries/svn/mbed/trunk@43 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/picojson.lib Thu Aug 23 00:17:04 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mimil/code/picojson/#2bb500b021e2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/vfd.cpp Thu Aug 23 00:17:04 2012 +0000
@@ -0,0 +1,141 @@
+/*
+ * The VFD code
+ *
+ * for a futuba M204LD01AA
+ *
+ *
+ * p27 -> input, busy
+ * p28 -> serial data in
+ * p29 -> clock
+ * p30 -> latch
+ *
+ *
+ */
+
+#include "mbed.h"
+#include "vfd.h"
+
+// InturruptIn busy_intr(p27)
+
+DigitalIn vfd_p_busy(p27);
+DigitalOut vfd_p_data(p28);
+DigitalOut vfd_p_clock(p29);
+DigitalOut vfd_p_latch(p30);
+
+/* current state */
+int c_data;
+bool c_a0;
+bool c_blank;
+
+void vfd_shift_clock(void) {
+ vfd_p_clock = 0;
+ wait_us(100);
+ vfd_p_clock = 1;
+ wait_us(100);
+}
+
+void vfd_doit(int data, int mode, int wr, int ss) {
+ int i, bit;
+
+ vfd_p_data = 0; // nc
+ vfd_shift_clock();
+ vfd_p_data = 0; // nc
+ vfd_shift_clock();
+
+ vfd_p_data = 1; // reset, 0 = in reset
+ vfd_shift_clock();
+
+ vfd_p_data = c_blank; // Blank, 0 = blanked
+ vfd_shift_clock();
+
+ vfd_p_data = ss; // SS, clockish
+ vfd_shift_clock();
+
+ vfd_p_data = 1; // rd
+ vfd_shift_clock();
+
+ vfd_p_data = mode; // A0, data/command
+ vfd_shift_clock();
+
+ vfd_p_data = wr; // WR
+ vfd_shift_clock();
+
+ for (i = 0 ; i < 8; i++) {
+ bit = (data & (1 << i)) >> i;
+ vfd_p_data = bit;
+ vfd_shift_clock();
+ }
+
+ vfd_p_latch = 0;
+ wait_us(10);
+ vfd_p_latch = 1;
+ wait_us(10);
+}
+
+/* mode == 1 if command */
+void vfd_send(int data, int mode)
+{
+ data = data & 0xff;
+ c_data = data;
+ c_blank = 1;
+
+ if (vfd_p_busy)
+ printf("pre, busy: %d\r\n", vfd_p_busy.read());
+
+ if (vfd_p_busy)
+ {
+ wait_ms(4); // should loop, 3.1 ms is max according to the data sheet.
+ if (vfd_p_busy)
+ {
+ printf("still busy :(\r\n");
+ return;
+ }
+ }
+
+ /* wr,ss */
+ vfd_doit(data, mode, 0, 0);
+ wait_us(1);
+ vfd_doit(data, mode, 1, 0);
+ wait_us(1);
+ vfd_doit(data, mode, 1, 1);
+ wait_us(1);
+
+ if (vfd_p_busy)
+ printf("post1, busy: %d\r\n", vfd_p_busy.read());
+
+ vfd_doit(data, mode, 0, 0);
+ wait_ms(1); // loop and wait for not busy
+
+ if (vfd_p_busy)
+ printf("post2, busy: %d\r\n", vfd_p_busy.read());
+
+ while (vfd_p_busy) {
+ wait_us(250);
+ printf("post-while, busy: %d\r\n", vfd_p_busy.read());
+ }
+}
+
+void vfd_command(int data) {
+ vfd_send(data, 1);
+}
+
+void vfd_data(int data) {
+ vfd_send(data, 0);
+}
+
+void vfd_init(void) {
+ vfd_data(0x0c); // clear
+ vfd_data(0x1b); // esc
+ vfd_data(0); // v pos
+ vfd_data(0); // h pos
+}
+
+void vfd_blank(void) {
+ /* blank */
+}
+
+void vfd_show(void) {
+ /* unblank */
+}
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vfd.h Thu Aug 23 00:17:04 2012 +0000 @@ -0,0 +1,7 @@ + +void vfd_command(int data); +void vfd_data(int data); +void vfd_blank(void); +void vfd_status(void); +void vfd_init(void); +