#include <string.h>
#include "gcn64lib.h"
#include "../requests.h"

int gcn64lib_getConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *rx, unsigned char rx_max)
{
	unsigned char cmd[2];
	int n;

	cmd[0] = RQ_GCN64_GET_CONFIG_PARAM;
	cmd[1] = param;

	n = gcn64_exchange(hdl, cmd, 2, rx, rx_max);
	if (n<2)
		return n;

	n -= 2;

	// Drop the leading CMD and PARAM
	if (n) {
		memmove(rx, rx+2, n);
	}

	return n;
}
int gcn64lib_setConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *data, unsigned char len)
{
	unsigned char cmd[2 + len];
	int n;

	cmd[0] = RQ_GCN64_SET_CONFIG_PARAM;
	cmd[1] = param;
	memcpy(cmd + 2, data, len);

	n = gcn64_exchange(hdl, cmd, 2 + len, cmd, sizeof(cmd));
	if (n<0)
		return n;

	return 0;
}

int gcn64lib_suspendPolling(gcn64_hdl_t hdl, unsigned char suspend)
{
	unsigned char cmd[2];
	int n;

	cmd[0] = RQ_GCN64_SUSPEND_POLLING;
	cmd[1] = suspend;

	n = gcn64_exchange(hdl, cmd, 2, cmd, sizeof(cmd));
	if (n<0)
		return n;

	return 0;
}

int gcn64lib_rawSiCommand(gcn64_hdl_t hdl, unsigned char channel, unsigned char *tx, unsigned char tx_len, unsigned char *rx, unsigned char max_rx)
{
	unsigned char cmd[3 + tx_len];
	int cmdlen, rx_len, n;

	cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
	cmd[1] = channel;
	cmd[2] = tx_len;
	memcpy(cmd+3, tx, tx_len);
	cmdlen = 3 + tx_len;

	n = gcn64_exchange(hdl, cmd, cmdlen, rx, max_rx);
	if (n<0)
		return n;

	rx_len = rx[2];

	memmove(rx, rx + 3, rx_len);

	return rx_len;
}