C client for GEX. bare-bones, low level access
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gex-client-c/main.c

76 lines
1.8 KiB

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <assert.h>
#include <utils/hexdump.h>
#include "gex.h"
static GexClient *gex;
/** ^C handler to close it gracefully */
static void sigintHandler(int sig)
{
(void)sig;
if (gex != NULL) {
GEX_DeInit(gex);
}
exit(0);
}
#define LED_CMD_TOGGLE 0x02
TF_Result hdl_default(TinyFrame *tf, TF_Msg*msg)
{
(void)tf;
fprintf(stderr, "TF unhandled msg len %d, type %d, id %d", msg->len, msg->type, msg->frame_id);
hexDump("payload", msg->data, msg->len);
return TF_STAY;
}
int main(void)
{
// Bind ^C handler for safe shutdown
signal(SIGINT, sigintHandler);
gex = GEX_Init("/dev/ttyACM0", 200);
if (!gex) exit(1);
TF_AddGenericListener(GEX_GetTF(gex), hdl_default);
//GexUnit *led = GEX_Unit(gex, "LED");
//GEX_Send(led, LED_CMD_TOGGLE, NULL, 0);
GexUnit *test = GEX_Unit(gex, "TEST");
assert(test != NULL);
// the "PING" command
GexMsg msg;
msg = GEX_Query0(test, 0);
assert(msg.type == MSG_SUCCESS);
fprintf(stderr, "\"PING\" cmd: OK.\n");
const char *s = "BLOCKCHAIN BUT FOR COWS";
msg = GEX_Query(test, 1, (const uint8_t *) s, (uint32_t) strlen(s));
fprintf(stderr, "\"ECHO\" cmd resp: %d, len %d, pld: %.*s\n", msg.type, (int) msg.len, (int) msg.len, (char *) msg.payload);
assert(0==strncmp((char*)msg.payload, s, strlen(s)));
uint8_t buffr[10000];
GexBulk br = {
.buffer = buffr,
.capacity = 10000,
.req_cmd = 2,
.req_data = NULL,
.req_len = 0,
};
uint32_t actuallyRead = GEX_BulkRead(test, &br);
fprintf(stderr, "Read %d bytes:\n", actuallyRead);
fprintf(stderr, "%.*s", actuallyRead, buffr);
fprintf(stderr, "ALL OK, ending.\n");
GEX_DeInit(gex);
return 0;
}