Stage-1 Students SoCEM
Solution for the Morse Code Task
Revision 0:40f06a589018, committed 2017-09-14
- Comitter:
- noutram
- Date:
- Thu Sep 14 13:09:45 2017 +0000
- Commit message:
- Initial version by Chris Tipney
Changed in this revision
diff -r 000000000000 -r 40f06a589018 .gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Thu Sep 14 13:09:45 2017 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
diff -r 000000000000 -r 40f06a589018 README.md --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Thu Sep 14 13:09:45 2017 +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
diff -r 000000000000 -r 40f06a589018 img/uvision.png Binary file img/uvision.png has changed
diff -r 000000000000 -r 40f06a589018 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Sep 14 13:09:45 2017 +0000
@@ -0,0 +1,93 @@
+// Elec143 Morsecode labwork
+//
+// Suggested solution using functions
+// Chris Tipney September 2017
+//
+// Morse code
+// dot = 150 ms
+// dash = 450 ms
+// symbol space = 150 ms
+// letter space = 450 ms
+// word space = 900 ms
+//
+// Note
+// Every symbol is followed by at least 150 ms
+// only the space beyond that varies according
+// to context
+
+#include "mbed.h"
+
+// function prototypes
+void sierra(int r); // output the pattern for the letter 'S' repeat according to value of r
+void oscar(int r); // output the pattern for the letter 'O' repeat according to value of r
+void dot(int r); // output a short flash followed by 150 ms space repeat according to value of r
+void dash(int r); // output a long flash followed by 150 ms space repeat according to value of r
+void letterspace(); // output 300 ms space to make up the rest of the letter space 450 ms
+void wordspace(); // output 750 ms space to make up the rest of the word space 900 ms
+
+// led attached to port D7
+DigitalOut myled(D7);
+
+int main()
+{
+ while(1) // loop forever
+ {
+ sierra(1); // S
+ oscar(1); // O
+ sierra(1); // S
+ wordspace();
+ }
+}
+
+// function implementations
+
+void sierra(int rep)
+{
+ for (int i = 0; i < rep; i++)
+ {
+ dot(3);
+ letterspace();
+ }
+}
+
+void oscar(int rep)
+{
+ for (int i = 0; i < rep; i++)
+ {
+ dash(3);
+ letterspace();
+ }
+}
+
+
+void dot(int rep)
+{
+ for (int i = 0; i < rep; i++)
+ {
+ myled = 1;
+ wait(0.150);
+ myled = 0;
+ wait(0.150);
+ }
+}
+
+void dash(int rep)
+{
+ for (int i = 0; i < rep; i++)
+ {
+ myled = 1;
+ wait(0.450);
+ myled = 0;
+ wait(0.150);
+ }
+}
+
+void wordspace()
+{
+ wait(.750);
+}
+
+void letterspace()
+{
+ wait(.300);
+}
diff -r 000000000000 -r 40f06a589018 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Thu Sep 14 13:09:45 2017 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#98ba8acb83cfc65f30a8a0771a27c71443ab093a