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# Introduction |
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Basic code to Blink the LED on the MSP430 F5529 Launchpad Evaluation Kit MSP-EXP430F5529LP from Texas Instruments, using the GCC tool-chain from terminal. |
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# The repository |
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This repository includes the `main.c` and `msp430.dat` files required to accomplish the compilation and debuging process. |
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## The Code `main.c` |
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The example code blinks the on board LED attached to **P1.0**, you can copy the contents from here or clone use the file included in the repository: |
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``` |
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#include <msp430f5529.h> |
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void main(void) |
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{ |
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WDTCTL = WDTPW | WDTHOLD; // stop watchdog timer |
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// PM5CTL0 = 0x0000; // disable high impedance mode |
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P1DIR = 0x01; //set up bit 0 of P1 as output |
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P1OUT = 0x00; //initialize bit 0 of P1 to 0 |
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for(;;){ //loop |
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volatile unsigned int i; |
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P1OUT ^= 0x01; //toggle bit 0 of P1 |
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//Delay |
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for(i=40000; i>0;){ |
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i--; |
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__no_operation(); |
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} |
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} |
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} |
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``` |
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## The `msp430.dat` |
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The content of `msp430.dat` configures the communication between computer and the launchpad. |
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Add more description later |
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# Compiling |
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``` |
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export PATH="/home/gmarx/msp430-gcc/bin:$PATH" |
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msp430-elf-gcc -I /home/gmarx/msp430-gcc/include -L /home/gmarx/msp430-gcc/include -mmcu=msp430f5529 -O2 -g main.c -o main.o |
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``` |
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# Debuging |
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``` |
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gdb_agent_console msp430.dat |
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CPU Name Port |
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-------- ---- |
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msp430 :55000 |
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Starting all cores |
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CPU Name Status |
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-------- ------ |
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msp430 Waiting for client |
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``` |
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In a new terminal tab or window: |
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``` |
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msp430-elf-gdb --tui main.o |
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(gdb) target remote :55000 |
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Remote debugging using :55000 |
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0x00004400 in __crt0_start () |
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``` |
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The agent will response in the other terminal: |
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``` |
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msp430 Client connected...Connecting to Target |
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Found USB FET at ttyACM0 |
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Target connected...Starting server |
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``` |
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Then, continue in the gdb terminal prompt: |
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``` |
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(gdb) load |
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Loading section .lowtext, size 0xa lma 0x4400 |
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Loading section .text, size 0x2e lma 0x440a |
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Loading section __reset_vector, size 0x2 lma 0xfffe |
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Start address 0x00004400, load size 58 |
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Transfer rate: 38 bytes/sec, 19 bytes/write. |
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(gdb) b 1 |
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Breakpoint 1 at 0x440c: file main.c, line 4. |
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(gdb) continue |
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Continuing. |
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Breakpoint 1, main () at main.c:4 |
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(gdb) s 1 |
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``` |
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and you will see the code in the terminal running step by step, or write `continue` to observe the LED blinking on the Launch pad board. |
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# Problems: |
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``` |
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msp430-elf-gdb main.o |
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msp430-elf-gdb: error while loading shared libraries: libncursesw.so.5: cannot open shared object file: No such file or directory |
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yay -S ncurses5-compat-libs |
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``` |
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