Wouter van Kleunen
Template for advanced microcontrollers assignment 'DMA' 2017
Revision 0:7006377c8a24, committed 2017-06-06
- Comitter:
- wkleunen
- Date:
- Tue Jun 06 08:24:49 2017 +0000
- Child:
- 1:1db1c42a2348
- Commit message:
- Initial commit
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Tue Jun 06 08:24:49 2017 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Tue Jun 06 08:24:49 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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SimpleDMA.lib Tue Jun 06 08:24:49 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/Sissors/code/SimpleDMA/#f7345d41b076
Binary file img/uvision.png has changed
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Jun 06 08:24:49 2017 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+#include "SimpleDMA.h"
+#include <algorithm>
+
+RawSerial pc(USBTX, USBRX); // PC tx, rx
+RawSerial device(PTE0, PTE1); // UART1 tx, rx
+
+DigitalOut led1(LED_RED);
+DigitalOut led2(LED_GREEN);
+
+SimpleDMA dma_pc;
+SimpleDMA dma_device;
+
+int main()
+{
+ // Enable the TX and RX dma on UART1
+ UART1->C2 |= UART_C2_RIE_MASK | UART_C2_TIE_MASK ;
+ UART1->C4 |= UART_C4_RDMAS_MASK | UART_C4_TDMAS_MASK;
+
+ // TODO: Configure dma_device to transfer data from UART1 to UART0
+ // ...
+
+ uint8_t buffer[128];
+ uint8_t buffer_ptr = 0;
+
+ while(1) {
+ char c = pc.getc();
+ buffer[buffer_ptr] = c;
+ buffer_ptr = (buffer_ptr + 1) % sizeof(buffer);
+
+ if(c == '\r')
+ {
+ buffer[buffer_ptr] = '\n';
+ ++buffer_ptr;
+
+ led2 = !led2;
+
+ // TODO: Trigger dma_pc to transfer data from the buffer to UART1
+ // ....
+
+ buffer_ptr = 0;
+ }
+ }
+}
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Tue Jun 06 08:24:49 2017 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#5fff7e1daeb395aa3d1ecf3f9ec3f4fead3de0c2