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/*
* Simple ring_buffer test.
*
* Does a basic test of functionality on rb_full_count(), rb_reset(),
* rb_push_insert(), and rb_safe_insert().
*
* To test:
*
* - Connect a serial monitor to SerialUSB
* - Press any key
*
* This file is released into the public domain.
*/
#include <wirish/wirish.h>
#include <libmaple/ring_buffer.h>
#define BUF_SIZE 64
ring_buffer ring_buf;
ring_buffer *rb;
uint8 rb_buffer[BUF_SIZE];
void test_rb_push_insert(int num_bytes_to_insert);
void test_rb_safe_insert(int num_bytes_to_insert);
void test_rb_insertion_function(int num_bytes_to_insert,
int (*insertion_fn)(ring_buffer*, uint8),
const char insertion_fn_name[]);
void print_rb_contents(void);
void setup() {
rb = &ring_buf;
rb_init(rb, BUF_SIZE, rb_buffer);
while (!SerialUSB.available())
;
SerialUSB.println("Beginning test.");
SerialUSB.println();
}
void loop() {
test_rb_push_insert(63);
SerialUSB.println("------------------------------");
test_rb_push_insert(64);
SerialUSB.println("------------------------------");
test_rb_safe_insert(63);
SerialUSB.println("------------------------------");
test_rb_safe_insert(64);
SerialUSB.println("------------------------------");
SerialUSB.println();
SerialUSB.println("Test finished.");
while (true)
;
}
void test_rb_push_insert(int num_bytes_to_insert) {
test_rb_insertion_function(num_bytes_to_insert,
rb_push_insert,
"rb_push_insert()");
}
void test_rb_safe_insert(int num_bytes_to_insert) {
test_rb_insertion_function(num_bytes_to_insert,
rb_safe_insert,
"rb_safe_insert()");
}
void test_rb_insertion_function(int num_bytes_to_insert,
int (*insertion_fn)(ring_buffer *, uint8),
const char insertion_fn_name[]) {
SerialUSB.println("resetting ring buffer.");
rb_reset(rb);
print_rb_contents();
SerialUSB.print(insertion_fn_name);
SerialUSB.print("-ing ");
SerialUSB.print(num_bytes_to_insert);
SerialUSB.println(" bytes.");
for (uint8 i = 1; i <= num_bytes_to_insert; i++)
insertion_fn(rb, i);
uint16 count = rb_full_count(rb);
SerialUSB.print("rb_full_count(rb) = ");
SerialUSB.println(count);
print_rb_contents();
}
void print_rb_contents() {
uint16 count = rb_full_count(rb);
SerialUSB.print("ring buffer contents: ");
for (uint16 i = 0; i < count; i++) {
SerialUSB.print((int)rb_remove(rb));
if (i < count - 1) SerialUSB.print(", ");
}
SerialUSB.println();
}
// Force init to be called *first*, i.e. before static object allocation.
// Otherwise, statically allocated objects that need libmaple may fail.
__attribute__((constructor)) void premain() {
init();
}
int main(void) {
setup();
while (true) {
loop();
}
return 0;
}
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