UART: Added a trace macro

[simavr] / examples / parts / uart_pty.c

diff --git a/examples/parts/uart_pty.c b/examples/parts/uart_pty.c
index 2f95e60..0eb33f1 100644 (file)
--- a/examples/parts/uart_pty.c
+++ b/examples/parts/uart_pty.c
@@ -35,13 +35,18 @@
 
 DEFINE_FIFO(uint8_t,uart_pty_fifo);
 
+//#define TRACE(_w) _w
+#ifndef TRACE
+#define TRACE(_w)
+#endif
+
 /*
  * called when a byte is send via the uart on the AVR
  */
 static void uart_pty_in_hook(struct avr_irq_t * irq, uint32_t value, void * param)
 {
        uart_pty_t * p = (uart_pty_t*)param;
-       //printf("uart_pty_in_hook %02x\n", value);
+       TRACE(printf("uart_pty_in_hook %02x\n", value);)
        uart_pty_fifo_write(&p->in, value);
 }
 
@@ -51,7 +56,7 @@ static void  uart_pty_flush_incoming(uart_pty_t * p)
 {
        while (p->xon && !uart_pty_fifo_isempty(&p->out)) {
                uint8_t byte = uart_pty_fifo_read(&p->out);
-       //      printf("uart_pty_flush_incoming send %02x\n", byte);
+               TRACE(printf("uart_pty_flush_incoming send %02x\n", byte);)
                avr_raise_irq(p->irq + IRQ_UART_PTY_BYTE_OUT, byte);
        }
 }
@@ -63,8 +68,7 @@ static void  uart_pty_flush_incoming(uart_pty_t * p)
 static void uart_pty_xon_hook(struct avr_irq_t * irq, uint32_t value, void * param)
 {
        uart_pty_t * p = (uart_pty_t*)param;
-       if (!p->xon)
-               printf("uart_pty_xon_hook\n");
+       TRACE(if (!p->xon) printf("uart_pty_xon_hook\n");)
        p->xon = 1;
        uart_pty_flush_incoming(p);
 }
@@ -75,8 +79,7 @@ static void uart_pty_xon_hook(struct avr_irq_t * irq, uint32_t value, void * par
 static void uart_pty_xoff_hook(struct avr_irq_t * irq, uint32_t value, void * param)
 {
        uart_pty_t * p = (uart_pty_t*)param;
-       if (p->xon)
-               printf("uart_pty_xoff_hook\n");
+       TRACE(if (p->xon) printf("uart_pty_xoff_hook\n");)
        p->xon = 0;
 }
 
@@ -108,7 +111,7 @@ static void * uart_pty_thread(void * param)
                        ssize_t r = read(p->s, p->buffer, sizeof(p->buffer)-1);
                        p->buffer_len = r;
                        p->buffer_done = 0;
-               //      hdump("pty recv", p->buffer, r);
+                       TRACE(hdump("pty recv", p->buffer, r);)
                }
                if (p->buffer_done < p->buffer_len) {
                        // write them in fifo
@@ -122,10 +125,10 @@ static void * uart_pty_thread(void * param)
                        while (!uart_pty_fifo_isempty(&p->in) && dst < (buffer+sizeof(buffer)))
                                *dst++ = uart_pty_fifo_read(&p->in);
                        size_t len = dst - buffer;
-                       size_t r = write(p->s, buffer, len);
-               //      hdump("pty send", buffer, r);
+                       TRACE(size_t r =) write(p->s, buffer, len);
+                       TRACE(hdump("pty send", buffer, r);)
                }
-       //      uart_pty_flush_incoming(p);
+               uart_pty_flush_incoming(p);
        }
        return NULL;
 }