11 years, 2 months ago.

What is the source code for LPC812Max and RaspberryPi serial connection ?

The idea came to me after the inability to run program by serial pc running virtual USBrx/tx.

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1. include "mbed.h"

int main( ... ) { int aVar = 10; Serial pc(USBTX, USBRX); tx, rx pc.printf( "Hello world! %d\n\r", aVar ); } -----------

My goal is to connect the GPIO Raspberry-pi interface, using 3.3Volt output, ground, and RX / TX via the level shifter, on my LPC812Max : 5 volt, ground and the digital arduino compatible TX/RX (0,1).

I physically connect, and that's ok, with minicom installed.

I tried this, but I have a flood of errors ...

---------------- include "mbed.h"

1. include "BufferedSerial.h"

BufferedSerial pc(USBTX, USBRX);

int main() { pc.baud(115200);

while(1) { Timer s;

s.start(); pc.printf("Hello World - buff\n"); int buffered_time = s.read_us(); wait(0.1f); give time for the buffer to empty

s.reset(); printf("Hello World - poll\n"); int polled_time = s.read_us(); s.stop(); wait(0.1f); give time for the buffer to empty

pc.printf("printf buffered took %d us\n", buffered_time); pc.printf("printf polled took %d us\n", polled_time); wait(0.5f); } }

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I saw that we could define the connections of wires, but in this case, there is no mention of TX and RX, present in the digital output lpc812 (0 and 1)

----------------- 00001 example showing sending/receiving character 00002 00003 #include "mbed.h" 00004 00005 connect p9 to p14 with a wire! 00006 Serial out(p9, NC); 00007 Serial in(NC, p14); 00008 00009 DigitalOut led(LED1); 00010 00011 int main() { 00012 out.putc('h'); 00013 out.putc('i'); 00014 char c1 = in.getc(); 00015 char c2 = in.getc(); 00016 00017 led = 1; 00018 printf("c1: %c, c2: %c\n", c1, c2); 00019 }

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This will be great if I could get the source code for my project.

Thanks.