EthernetRxBenchmark - Simple program to determine Ethernet Rx bandwidth

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Simple program to determine Ethernet Rx bandwidth

main.cpp@0:35df02818f6d, 2011-02-25 (annotated)

User	Revision	Line number	New contents of line
simon	0:35df02818f6d	1	#include "mbed.h"
simon	0:35df02818f6d	2	#include "Ethernet.h"
simon	0:35df02818f6d	3
simon	0:35df02818f6d	4	Ethernet eth;
simon	0:35df02818f6d	5
simon	0:35df02818f6d	6	#define NPACKETS 100000
simon	0:35df02818f6d	7
simon	0:35df02818f6d	8	int main() {
simon	0:35df02818f6d	9	printf("Hello Ethernet Rx Benchmark!\n");
simon	0:35df02818f6d	10
simon	0:35df02818f6d	11	char buffer[0x600];
simon	0:35df02818f6d	12	int size = 0;
simon	0:35df02818f6d	13
simon	0:35df02818f6d	14	char buf[6] = {0};
simon	0:35df02818f6d	15	eth.address(buf);
simon	0:35df02818f6d	16	printf("mbed MAC: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
simon	0:35df02818f6d	17	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
simon	0:35df02818f6d	18
simon	0:35df02818f6d	19	while(!eth.link());
simon	0:35df02818f6d	20
simon	0:35df02818f6d	21	printf("Waiting for %d packets...\n", NPACKETS);
simon	0:35df02818f6d	22
simon	0:35df02818f6d	23	Timer t;
simon	0:35df02818f6d	24	int n = 0;
simon	0:35df02818f6d	25	for(int i=0; i<NPACKETS; i++) {
simon	0:35df02818f6d	26	do {
simon	0:35df02818f6d	27	size = eth.receive();
simon	0:35df02818f6d	28	} while(size <= 0);
simon	0:35df02818f6d	29	eth.read(buffer, size);
simon	0:35df02818f6d	30	n += size;
simon	0:35df02818f6d	31	}
simon	0:35df02818f6d	32	t.stop();
simon	0:35df02818f6d	33	printf("Time = %.2f seconds\n", t.read());
simon	0:35df02818f6d	34
simon	0:35df02818f6d	35	float bw = n * 8 / t.read();
simon	0:35df02818f6d	36	printf("bandwidth = %.2f kbps\n", bw / 1024.0);
simon	0:35df02818f6d	37
simon	0:35df02818f6d	38	}