Mbed Colombia Meetup
MBC004 - Ticker This example use the BusOut function with a 7-Segment Display
Revision 0:317ba4466741, committed 2018-07-12
- Comitter:
- leandropg
- Date:
- Thu Jul 12 11:16:20 2018 +0000
- Commit message:
- MBC004 - Ticker; This example use the BusOut function with a 7-Segment Display
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Thu Jul 12 11:16:20 2018 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Thu Jul 12 11:16:20 2018 +0000 @@ -0,0 +1,87 @@ +# Getting started with Blinky on mbed OS + +This guide reviews the steps required to get Blinky working on an mbed OS platform. + +Please install [mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). + +## Import the example application + +From the command-line, import the example: + +``` +mbed import mbed-os-example-blinky +cd mbed-os-example-blinky +``` + +### Now compile + +Invoke `mbed compile`, and specify the name of your platform and your favorite toolchain (`GCC_ARM`, `ARM`, `IAR`). For example, for the ARM Compiler 5: + +``` +mbed compile -m K64F -t ARM +``` + +Your PC may take a few minutes to compile your code. At the end, you see the following result: + +``` +[snip] ++----------------------------+-------+-------+------+ +| Module | .text | .data | .bss | ++----------------------------+-------+-------+------+ +| Misc | 13939 | 24 | 1372 | +| core/hal | 16993 | 96 | 296 | +| core/rtos | 7384 | 92 | 4204 | +| features/FEATURE_IPV4 | 80 | 0 | 176 | +| frameworks/greentea-client | 1830 | 60 | 44 | +| frameworks/utest | 2392 | 512 | 292 | +| Subtotals | 42618 | 784 | 6384 | ++----------------------------+-------+-------+------+ +Allocated Heap: unknown +Allocated Stack: unknown +Total Static RAM memory (data + bss): 7168 bytes +Total RAM memory (data + bss + heap + stack): 7168 bytes +Total Flash memory (text + data + misc): 43402 bytes +Image: .\.build\K64F\ARM\mbed-os-example-blinky.bin +``` + +### Program your board + +1. Connect your mbed device to the computer over USB. +1. Copy the binary file to the mbed device. +1. Press the reset button to start the program. + +The LED on your platform turns on and off. + +## Export the project to Keil MDK, and debug your application + +From the command-line, run the following command: + +``` +mbed export -m K64F -i uvision +``` + +To debug the application: + +1. Start uVision. +1. Import the uVision project generated earlier. +1. Compile your application, and generate an `.axf` file. +1. Make sure uVision is configured to debug over CMSIS-DAP (From the Project menu > Options for Target '...' > Debug tab > Use CMSIS-DAP Debugger). +1. Set breakpoints, and start a debug session. + + + +## Troubleshooting + +1. Make sure `mbed-cli` is working correctly and its version is `>1.0.0` + + ``` + mbed --version + ``` + + If not, you can update it: + + ``` + pip install mbed-cli --upgrade + ``` + +2. If using Keil MDK, make sure you have a license installed. [MDK-Lite](http://www.keil.com/arm/mdk.asp) has a 32 KB restriction on code size. \ No newline at end of file
Binary file img/uvision.png has changed
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jul 12 11:16:20 2018 +0000
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+
+/**
+ * MBC004 - Ticker
+ * This example use the BusOut function with a 7-Segment Display
+ * 12 Jul 2018 - Mbed Colombia - http://mbedcolombia.wordpress.com/
+ *
+ * Board: ST-Nucleo-F446RE - https://os.mbed.com/platforms/ST-Nucleo-F446RE/
+ *
+ * Copyright [2018] [Leandro Perez Guatibonza / leandropg AT gmail DOT com]
+ *
+ * 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"
+
+// Define GPIO Pins 7-Segment Display
+// PA_10 --> A
+// PB_3 --> B
+// PB_5 --> C
+// PB_4 --> D
+// PB_10 --> E
+// PA_8 --> F
+// PA_9 --> G
+BusOut display7Seg(PA_9, PA_8, PB_10, PB_4, PB_5, PB_3, PA_10);
+
+// Anode Display 1
+DigitalOut display1(PC_7);
+
+// Anode Display 2
+DigitalOut display2(PB_6);
+
+// Variables Counter
+int tens;
+int units;
+
+// Define Logic Anode Comun Display
+// ABCDEFG
+int anodeComun[16] = { 0b0000001, // 0
+ 0b1001111, // 1
+ 0b0010010, // 2
+ 0b0000110, // 3
+ 0b1001100, // 4
+ 0b0100100, // 5
+ 0b0100000, // 6
+ 0b0001111, // 7
+ 0b0000000, // 8
+ 0b0001100, // 9
+ 0b0001000, // A
+ 0b1100000, // B
+ 0b1110010, // C
+ 0b1000010, // D
+ 0b0110000, // E
+ 0b0111000 }; // F
+
+// Change Display Selected
+void changeDisplaySelected() {
+
+ // Check Display Selected
+ if(display1) {
+
+ // Turn Off Display 1
+ display1 = 0;
+
+ // Export data to Bus
+ display7Seg = anodeComun[units];
+
+ // Turn On Display 2
+ display2 = 1;
+
+ } else {
+
+ // Turn Off Display 2
+ display2 = 0;
+
+ // Export data to Bus
+ display7Seg = anodeComun[tens];
+
+ // Turn On Display 1
+ display1 = 1;
+ }
+}
+
+// Main Loop runs in its own thread in the OS
+int main() {
+
+ Ticker changeDisplay;
+
+ // Configure Change Display Selected each 10 ms
+ changeDisplay.attach(&changeDisplaySelected, 0.010);
+
+ // Inifite Loop
+ while(1) {
+
+ // Iterate between 0 and 99
+ for(int i = 0; i < 100; i++) {
+
+ // Calculate Tens and Units
+ tens = i / 10;
+ units = i % 10;
+
+ // Wait 150 millisecond
+ wait_ms(150);
+ }
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Thu Jul 12 11:16:20 2018 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#c9e63f14085f5751ff5ead79a7c0382d50a813a2