Diff: VFD.cpp

Revision:

0:f0e9065504cd

Child:

1:770ec826c555

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VFD.cpp	Mon Mar 05 03:42:10 2012 +0000
@@ -0,0 +1,92 @@
+#include "mbed.h"
+#include <string>
+#include "VFD.h"
+
+VFD::VFD() : _i2c(SDA, SCL) {
+    //Nothing to see here
+}
+
+VFD::~VFD() {
+    //Nothing to see here
+}
+
+int VFD::init() {
+    const char cmd[] = {254,160,0};
+    int length = 3;
+    return write(cmd, length);
+}
+
+int VFD::print(char * msg) {
+    int len = msg.size();
+    char * cmd = new char(len);
+    memcpy(cmd, msg.data(), len);
+    return write(cmd, len);
+}
+
+int VFD::autoScrollOn() {
+    const char cmd[] = {254, 81};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::autoScrollOff() {
+    const char cmd[] = {254, 82};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::lineWrapOn() {
+    const char cmd[] = {254, 67};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::lineWrapOff() {
+    const char cmd[] = {254, 68};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::setCursor(const int col, const int row) {
+    const char cmd[] = {254, 71, col, row};
+    int length = 4;
+    return write(cmd, length);
+}
+
+int VFD::clearScreen() {
+    const char cmd[] = {254, 88};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::goHome() {
+    const char cmd[] = {254, 72};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::initLargeNumbers() {
+    const char cmd[] = {254, 110};
+    int length = 2;
+    return write(cmd, length);
+}
+
+int VFD::setBrightness(const int val) {
+    if (val < 0 || val > 3)
+        return -1;
+    const char cmd[] = {254, 89, val};
+    int length = 3;
+    return write(cmd, length);
+}
+
+int VFD::write(const char * data, int length) {
+    int ret = _i2c.write(address, data, length); //Performs a complete write transaction
+    wait_us(625);
+    return ret; //Return I2C.write(...) return value
+}
+
+int VFD::read(char * data, int length) {
+    int ret = _i2c.read(address, data, length); //Performs a complete write transaction
+    wait_us(625);
+    return ret; //Return I2C.write(...) return value
+}
\ No newline at end of file