Remove assert code and add ascii table print

src/main.c

@@ -1,9 +1,8 @@
 #include <stdio.h>
 #include <avr/io.h>
 #include <util/delay.h>
-#define __ASSERT_USE_STDERR
-#include <assert.h>
 #include "uart.h"
+#include "print_helper.h"
 
 #define BLINK_DELAY_MS 100
 
@@ -11,35 +10,23 @@ int main (void)
 {
     /* set pin 3 of PORTA for output*/
     DDRA |= _BV(DDA3);
-    /* Init error console as stderr in UART3 and print user code info */
+    /* Init stdio on UART0 and UART3 and print user code info */
+    uart0_init();
     uart3_init();
+    stdout = stdin = &uart0_io;
     stderr = &uart3_out;
     fprintf(stderr, "Version: %s built on: %s %s\n",
             GIT_DESCR, __DATE__, __TIME__);
     fprintf(stderr, "avr-libc version: %s\n", __AVR_LIBC_VERSION_STRING__);
-    /*End UART3 init and info print */
-    /* Test assert - REMOVE IN FUTURE LABS */
-    char *array;
-    uint32_t i = 1;
-    extern int __heap_start, *__brkval;
-    int v;
-    array = malloc( i * sizeof(char));
-    assert(array);
-    /* End test assert */
+    /* End stdio init and info print */
+
+    /* ASCII table print */
+    print_ascii_tbl(stderr);
 
     while (1) {
         /* set pin 3 high to turn led on */
         PORTA |= _BV(PORTA3);
         _delay_ms(BLINK_DELAY_MS);
-        /* Test assert - REMOVE IN FUTURE LABS */
-        /* Increase memory allocated for array by 100 chars
-         * until we have eaten it all and print space between Stack and Heap.
-         * Thats how assert works in run-time */
-        array = realloc( array, (i++ * 100) * sizeof(char));
-        fprintf(stderr, "%d ",
-                (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval));
-        assert(array);
-        /* End test assert */
         /* set pin 3 low to turn led off */
         PORTA &= ~_BV(PORTA3);
         _delay_ms(BLINK_DELAY_MS);