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Das Wunder

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This commit is contained in:
Tristan Krause 2019-04-02 16:19:42 +02:00
parent 9414322a19
commit 4d2ea6013c
8 changed files with 360 additions and 348 deletions
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40
firmware/usart.cpp
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@ -1,8 +1,6 @@
#include "usart.h"
handler_t USART::receive_handler = nullptr;
void USART::init(handler_t handler) volatile
void USART::init() volatile
{
UCSR0A = _BV(U2X0);
@ -15,7 +13,6 @@ void USART::init(handler_t handler) volatile
UBRR0H = (((F_CPU / (8UL * BAUDRATE))-1) >> 8) & 0xFF;
UBRR0L = ((F_CPU / (8UL * BAUDRATE))-1) & 0xFF;
receive_handler = handler;
send_active = false;
}
@ -33,15 +30,27 @@ void USART::clearInputBuffer() volatile
return;
}
void USART::initRX(void) volatile
{
receive_pos = 0;
}
void USART::initTX(void) volatile
{
while(send_active);
send_pos = 0;
}
void USART::handleRX(void) volatile
{
receive_buffer[receive_pos] = UDR0;
receive_pos++;
receive_buffer[receive_pos++] = UDR0;
if(receive_pos >= rq_len[receive_buffer[0]]) // last byte
if(receive_pos >= rq_len[receive_buffer[0]]) // last byte of request
{
receive_pos = 0;
receive_handler();
nextRequest = true;
}
}
@ -59,18 +68,6 @@ void USART::handleTX(void) volatile
}
}
void USART::initRX(void) volatile
{
receive_pos = 0;
}
void USART::initTX(void) volatile
{
while(send_active);
send_pos = 0;
}
void USART::flush(void) volatile
{
if(send_pos == 0)
@ -83,6 +80,7 @@ void USART::flush(void) volatile
handleTX();
}
void USART::writeByte(uint8_t b) volatile
{
send_buffer[send_pos++] = b;
@ -137,6 +135,8 @@ uint16_t USART::readInt() volatile
return v;
}
void USART::nextByte(uint8_t byte) volatile
{
switch(seq)