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authorKarel Kočí <cynerd@email.cz>2015-10-11 14:13:02 +0200
committerKarel Kočí <cynerd@email.cz>2015-10-11 14:16:52 +0200
commit62c4883af719f5bacd197257387a0071c625e469 (patch)
treec8f37c013c8263f818375d5b45606c10584a7646 /examples/usartecho
parent861ed124caf5a403748c948b88afa4ef89cc1787 (diff)
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Replace usart initialization parameters with configuration
Baudrate and other configurations are now defined in compile time by preprocessor flags. This simplifies output code.
Diffstat (limited to 'examples/usartecho')
-rw-r--r--examples/usartecho/echo.c9
-rw-r--r--examples/usartecho/makefile8
2 files changed, 12 insertions, 5 deletions
diff --git a/examples/usartecho/echo.c b/examples/usartecho/echo.c
index 4ba9364..12b88f6 100644
--- a/examples/usartecho/echo.c
+++ b/examples/usartecho/echo.c
@@ -4,16 +4,19 @@
#include "../../usart.h"
void rec(uint8_t data) {
- if (data)
+ if (data == '\r') {
+ usart_send_str("\n\r"); // Send new line character with carriage return
+ } else if (data)
usart_send(data);
}
int main() {
- usart_init_uart();
+ DDRB = _BV(DDB1);
+ usart_init_async();
SREG |= _BV(7);
usart_send('a');
usart_send('b');
- usart_send('c');
+ usart_send('c'); // This character is not printed for some reason TODO
usart_send('d');
usart_send_str("\n\rHello, there is UART echo!\n\r");
usart_receive = rec;
diff --git a/examples/usartecho/makefile b/examples/usartecho/makefile
index 7475127..48a713c 100644
--- a/examples/usartecho/makefile
+++ b/examples/usartecho/makefile
@@ -5,10 +5,14 @@ F_CPU = 16000000L
IOE_PREFIX = ../..
IOE_CFLAGS = -Os -ffunction-sections -fdata-sections -fshort-enums -Wall \
-DCONFIG_IOE_USART_OUTBUFFER_SIZE=64 \
- -DCONFIG_IOE_USART_OUTBUFFER_MODE=0
+ -DCONFIG_IOE_USART_OUTBUFFER_MODE=0 \
+ -DCONFIG_IOE_USART_BAUD=115200 \
+ -DCONFIG_IOE_USART_PARITY=USART_PARITY_NONE \
+ -DCONFIG_IOE_USART_STOPBIT=USART_STOPBIT_SINGLE \
+ -DCONFIG_IOE_USART_DATABITS=8
all: usart.hex
- @echo Flash usart.hex to chip
+ @echo Now you can flash usart.hex to your chip.
clean: ioeclean
$(RM) echo.o