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echo befehl funktioniert

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This commit is contained in:
Tristan Krause 2019-03-26 11:35:41 +01:00
parent 13e95264fb
commit fae65afe8b
8 changed files with 154 additions and 87 deletions
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B15F.elf
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B15F.hex
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@ -6,91 +6,100 @@
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4
Makefile
View file

@ -10,9 +10,9 @@ OBJCOPY_PATH = C:\avr8-gnu-toolchain-win32_x86\bin\avr-objcopy.exe
OUTPUT = B15F.elf OUTPUT = B15F.elf
HEX = B15F.hex HEX = B15F.hex
CFLAGS = -std=c++14 -O3 -mmcu=atmega1284 -DF_CPU=20000000 -DPIO_DISABLE_I2C CFLAGS = -std=c++14 -O3 -mmcu=atmega1284 -DF_CPU=20000000
LDFLAGS = LDFLAGS =
OBJECTS = main.o spi.o mcp23s17.o tlc5615.o adu.o selftest.o global_vars.o OBJECTS = main.o spi.o mcp23s17.o tlc5615.o adu.o selftest.o global_vars.o usart.o
COMPILE = $(COMPILER_PATH) $(CFLAGS) COMPILE = $(COMPILER_PATH) $(CFLAGS)

1
global_vars.cpp
View file

@ -7,3 +7,4 @@ MCP23S17 sw(spi, SPIADR::SWITCH);
TLC5615 dac0(spi, SPIADR::AA0); TLC5615 dac0(spi, SPIADR::AA0);
TLC5615 dac1(spi, SPIADR::AA1); TLC5615 dac1(spi, SPIADR::AA1);
ADU adu; ADU adu;
USART usart;

2
global_vars.h
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@ -4,6 +4,7 @@
#include "mcp23s17.h" #include "mcp23s17.h"
#include "tlc5615.h" #include "tlc5615.h"
#include "adu.h" #include "adu.h"
#include "usart.h"
extern SPI spi; extern SPI spi;
extern MCP23S17 beba0; extern MCP23S17 beba0;
@ -12,5 +13,6 @@ extern MCP23S17 sw;
extern TLC5615 dac0; extern TLC5615 dac0;
extern TLC5615 dac1; extern TLC5615 dac1;
extern ADU adu; extern ADU adu;
extern USART usart;
#endif // GLOBAL_VARS_H #endif // GLOBAL_VARS_H

11
main.cpp
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@ -29,6 +29,15 @@ void initAll()
sw.setDirB(0xFF); // alle Eingang sw.setDirB(0xFF); // alle Eingang
adu.init(); adu.init();
usart.init();
}
void handleRequest()
{
const uint8_t req = usart.readByte();
uint8_t dummy = usart.readByte();
usart.writeByte(USART::MSG_OK);
usart.writeByte(dummy);
} }
int main() int main()
@ -43,7 +52,7 @@ int main()
while(1) while(1)
{ {
testAll(); handleRequest();
} }
return 0; return 0;

26
usart.cpp Normal file
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@ -0,0 +1,26 @@
#include "usart.h"
void USART::init()
{
UCSR0B = _BV(RXEN0) | _BV(TXEN0);
// Einstellen des Datenformats: 8 Datenbits, 1 Stoppbit
UCSR0C = _BV(UCSZ00) |_BV(UCSZ01);// (1<<URSEL0)|(1<<UCSZ10)|(1<<UCSZ00);
// setze Baudrate
UBRR0H = (((F_CPU / (16UL * BAUDRATE))-1) >> 8) & 0xFF;
UBRR0L = ((F_CPU / (16UL * BAUDRATE))-1) & 0xFF;
}
void USART::writeByte(uint8_t b)
{
UDR0 = b;
while(!(UCSR0A & _BV(TXC0)));
}
uint8_t USART::readByte()
{
while (!(UCSR0A & (1<<RXC0)));
return UDR0;
}

20
usart.h Normal file
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@ -0,0 +1,20 @@
#ifndef USART_H
#define USART_H
#include <avr/io.h>
#include <stdint.h>
constexpr uint16_t BAUDRATE = 38400UL; //9600UL//9600
class USART
{
public:
void init(void);
void writeByte(uint8_t);
uint8_t readByte(void);
constexpr static uint8_t MSG_OK = 0xFF;
constexpr static uint8_t MSG_FAIL = 0xFE;
};
#endif // USART_H