GHI Electronics
The preloaded firmware shipped on the PowerMate
Revision 0:c0f091562db4, committed 2014-12-02
- Comitter:
- Experiment626
- Date:
- Tue Dec 02 19:58:25 2014 +0000
- Child:
- 1:ea25641678f7
- Commit message:
- Initial PowerMate Official Firmware
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice.lib Tue Dec 02 19:58:25 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/USBDevice/#dfe51ad5cacf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/character_display/character_display.cpp Tue Dec 02 19:58:25 2014 +0000
@@ -0,0 +1,115 @@
+/*
+Copyright 2013 GHI Electronics LLC
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include "mbed.h"
+#include "character_display.h"
+
+
+character_display::character_display(
+ PinName a_lcd_rs
+ ,PinName a_lcd_e
+ ,PinName a_lcd_d4
+ ,PinName a_lcd_d5
+ ,PinName a_lcd_d6
+ ,PinName a_lcd_d7
+ ) :
+ lcd_rs( a_lcd_rs,false)
+ , lcd_e( a_lcd_e,false)
+ , lcd_d4( a_lcd_d4,false)
+ , lcd_d5( a_lcd_d5,false)
+ , lcd_d6( a_lcd_d6,false)
+ , lcd_d7( a_lcd_d7,false)
+{
+ lcd_rs=0; // command mode
+ wait_ms(2); // set-up time
+ for (int i=0; i<3; i++) {
+ send_nibble(0x3);
+ wait_ms(15);
+ }
+ send_nibble(0x02); // 4 bit mode
+ wait_us(40);
+
+ send_command(character_display::FUNCTION_SET); // characteristics of display
+ clear();
+ cursor_home();
+ send_command(character_display::MODE_SET);
+ send_command(character_display::CUR_V_SHIFT);
+ send_command(character_display::DISP_ON);
+
+
+ wait_ms(4);
+}
+
+
+
+
+void character_display::send_nibble(unsigned char b)
+{
+ lcd_e.write(true);
+ lcd_d7.write((b & 0x8) != 0);
+ lcd_d6.write((b & 0x4) != 0);
+ lcd_d5.write((b & 0x2) != 0);
+ lcd_d4.write((b & 0x1) != 0);
+ wait_us(1);
+ lcd_e.write(false); // enable data sampling
+ wait_us(1);
+}
+
+void character_display::send_byte(unsigned char b)
+{
+
+ send_nibble(b >> 4);
+ send_nibble(b);
+}
+
+void character_display::send_command(unsigned char c)
+{
+ lcd_rs.write(false); //set LCD to command mode
+ wait_us(1); //for rs samplin
+ send_byte(c);
+ wait_us(40);
+ lcd_rs.write(true); //set LCD to data mode
+ wait_us(1);
+}
+
+void character_display::print(const char* string)
+{
+ while (*string != '\0')
+ print(*(string++));
+}
+
+void character_display::print(char character)
+{
+ send_byte(character);
+ wait_us(40);
+}
+
+void character_display::clear()
+{
+ send_command(character_display::CLR_DISP);
+ wait_ms(10);
+}
+
+void character_display::cursor_home()
+{
+ send_command(character_display::CUR_HOME);
+}
+
+void character_display::set_cursor(unsigned char row, unsigned char col)
+{
+ char offsets[] = { 0x00, 0x40, 0x14, 0x54 };
+ send_command(character_display::SET_CURSOR | offsets[row] | col);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/character_display/character_display.h Tue Dec 02 19:58:25 2014 +0000
@@ -0,0 +1,60 @@
+/*
+Copyright 2013 GHI Electronics LLC
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#pragma once
+#include "mbed.h"
+
+class character_display{
+
+ public:
+
+ character_display(
+ PinName lcd_rs
+ ,PinName lcd_e
+ ,PinName lcd_d4
+ ,PinName lcd_d5
+ ,PinName lcd_d6
+ ,PinName lcd_d7
+ );
+
+ void send_nibble(unsigned char b);
+ void send_byte(unsigned char b);
+ void send_command(unsigned char c);
+ void print(const char* string);
+ void print(char character);
+ void clear();
+ void cursor_home();
+ void set_cursor(unsigned char row, unsigned char col);
+
+ private:
+
+ static const uint8_t DISP_ON = 0xC; //Turn visible LCD on
+ static const uint8_t CLR_DISP = 1; //Clear display
+ static const uint8_t CUR_HOME = 2; //Move cursor home and clear screen memory
+ static const uint8_t SET_CURSOR = 0x80; //SET_CURSOR + X : Sets cursor position to X
+ static const uint8_t FUNCTION_SET = 0x20; // 001 4 bit bus, 1 line, font 5x7
+ static const uint8_t MODE_SET = 0x06; // mode, direction,...
+ static const uint8_t CUR_V_SHIFT = 0x14; // cursor right
+
+
+ DigitalOut lcd_rs;
+ DigitalOut lcd_e;
+ DigitalOut lcd_d4;
+ DigitalOut lcd_d5;
+ DigitalOut lcd_d6;
+ DigitalOut lcd_d7;
+
+};
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Dec 02 19:58:25 2014 +0000
@@ -0,0 +1,97 @@
+/*
+** This software can be freely used, even comercially, as highlighted in the license.
+**
+** Copyright 2014 GHI Electronics, LLC
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+**
+**/
+
+#include "mbed.h"
+#include "character_display.h"
+
+// Outrageous Circuits PowerMate
+
+#define TIME_BETWEEN_SAMPLES_ms 300
+
+void led_flash();
+void print_float(float value, char* units, int fraction_digits);
+
+character_display lcd(P0_14, P0_13, P0_12, P0_11, P0_22, P0_10); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
+
+main()
+{
+ Ticker blink;
+
+ AnalogIn voltage(P0_23);
+ AnalogIn current(P0_15);
+
+ DigitalIn btn1(P0_1,PullUp);
+ DigitalIn btn2(P1_19,PullUp);
+
+ const int DISPLAY_VOLTAGE = 1;
+ const int DISPLAY_CURRENT = 2;
+ int display = 0;
+
+ Timer clock;
+ uint32_t start_time_ms = 0;
+
+ blink.attach(&led_flash, 0.5);
+ clock.start();
+
+ while(1) {
+ if (btn1 == 0) {
+ display = DISPLAY_VOLTAGE;
+ start_time_ms = clock.read_ms();
+ wait_ms(TIME_BETWEEN_SAMPLES_ms + 1); // force a sample and display
+ } else if (btn2 == 0){
+ display = DISPLAY_CURRENT;
+ start_time_ms = clock.read_ms();
+ wait_ms(TIME_BETWEEN_SAMPLES_ms + 1);
+ }
+
+ if (clock.read_ms() - start_time_ms >= TIME_BETWEEN_SAMPLES_ms) {
+ lcd.clear();
+ switch (display){
+ case DISPLAY_VOLTAGE:
+ print_float(voltage.read()*3.3*2,"V",3);
+ break;
+ case DISPLAY_CURRENT:
+ print_float((current.read()*3.3)/1.1,"A",2);
+ break;
+ default:
+ lcd.print("1V 2A");
+ break;
+ }
+
+ start_time_ms = clock.read_ms();
+ }
+ }
+}
+
+DigitalOut LED[]={(P0_18),(P0_19)};
+uint8_t whichLED=0;
+
+void led_flash()
+{
+ LED[whichLED]=1;
+ whichLED = whichLED ? 0 : 1 ;
+ LED[whichLED]=0;
+}
+
+void print_float(float value,char * suffix, int fractional_digits)
+{
+ char buffer[16];
+ (void) sprintf(buffer,"%7.*f%1.1s", fractional_digits, value, suffix); // 8 total: 6 numeric digits, one for the decimal point, 1 for suffix
+ lcd.print(buffer);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Dec 02 19:58:25 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file