20 static void next_list(struct at_client *at)  in next_list()  argument
22 	if (at->buf[at->pos] == ',') {  in next_list()
23 		at->pos++;  in next_list()
39 static void skip_space(struct at_client *at)  in skip_space()  argument
41 	while (at->buf[at->pos] == ' ') {  in skip_space()
42 		at->pos++;  in skip_space()
46 int at_get_number(struct at_client *at, uint32_t *val)  in at_get_number()  argument
50 	skip_space(at);  in at_get_number()
53 	     isdigit((unsigned char)at->buf[at->pos]) != 0;  in at_get_number()
54 	     at->pos++, i++) {  in at_get_number()
55 		*val = *val * 10U + at->buf[at->pos] - '0';  in at_get_number()
62 	next_list(at);  in at_get_number()
92 static int get_cmd_value(struct at_client *at, struct net_buf *buf,  in get_cmd_value()  argument
96 	uint8_t pos = at->pos;  in get_cmd_value()
99 	while (cmd_len < buf->len && at->pos != at->buf_max_len) {  in get_cmd_value()
101 			at->buf[at->pos++] = *str;  in get_cmd_value()
104 			pos = at->pos;  in get_cmd_value()
107 			at->buf[at->pos] = '\0';  in get_cmd_value()
108 			at->pos = 0U;  in get_cmd_value()
109 			at->cmd_state = cmd_state;  in get_cmd_value()
115 	if (pos == at->buf_max_len) {  in get_cmd_value()
122 static int get_response_string(struct at_client *at, struct net_buf *buf,  in get_response_string()  argument
126 	uint8_t pos = at->pos;  in get_response_string()
129 	while (cmd_len < buf->len && at->pos != at->buf_max_len) {  in get_response_string()
131 			at->buf[at->pos++] = *str;  in get_response_string()
134 			pos = at->pos;  in get_response_string()
137 			at->buf[at->pos] = '\0';  in get_response_string()
138 			at->pos = 0U;  in get_response_string()
139 			at->state = state;  in get_response_string()
145 	if (pos == at->buf_max_len) {  in get_response_string()
152 static void reset_buffer(struct at_client *at)  in reset_buffer()  argument
154 	(void)memset(at->buf, 0, at->buf_max_len);  in reset_buffer()
155 	at->pos = 0U;  in reset_buffer()
158 static int at_state_start(struct at_client *at, struct net_buf *buf)  in at_state_start()  argument
166 	at->state = AT_STATE_START_CR;  in at_state_start()
171 static int at_state_start_cr(struct at_client *at, struct net_buf *buf)  in at_state_start_cr()  argument
179 	at->state = AT_STATE_START_LF;  in at_state_start_cr()
184 static int at_state_start_lf(struct at_client *at, struct net_buf *buf)  in at_state_start_lf()  argument
186 	reset_buffer(at);  in at_state_start_lf()
188 		at->state = AT_STATE_GET_CMD_STRING;  in at_state_start_lf()
191 		at->state = AT_STATE_GET_RESULT_STRING;  in at_state_start_lf()
198 static int at_state_get_cmd_string(struct at_client *at, struct net_buf *buf)  in at_state_get_cmd_string()  argument
200 	return get_response_string(at, buf, ':', AT_STATE_PROCESS_CMD);  in at_state_get_cmd_string()
203 static bool is_cmer(struct at_client *at)  in is_cmer()  argument
205 	if (strncmp(at->buf, "CME ERROR", 9) == 0) {  in is_cmer()
212 static int at_state_process_cmd(struct at_client *at, struct net_buf *buf)  in at_state_process_cmd()  argument
214 	if (is_cmer(at)) {  in at_state_process_cmd()
215 		at->state = AT_STATE_PROCESS_AG_NW_ERR;  in at_state_process_cmd()
219 	if (at->resp) {  in at_state_process_cmd()
220 		at->resp(at, buf);  in at_state_process_cmd()
221 		at->resp = NULL;  in at_state_process_cmd()
224 	at->state = AT_STATE_UNSOLICITED_CMD;  in at_state_process_cmd()
228 static int at_state_get_result_string(struct at_client *at, struct net_buf *buf)  in at_state_get_result_string()  argument
230 	return get_response_string(at, buf, '\r', AT_STATE_PROCESS_RESULT);  in at_state_get_result_string()
233 static bool is_ring(struct at_client *at)  in is_ring()  argument
235 	if (strncmp(at->buf, "RING", 4) == 0) {  in is_ring()
242 static int at_state_process_result(struct at_client *at, struct net_buf *buf)  in at_state_process_result()  argument
247 	if (is_ring(at)) {  in at_state_process_result()
248 		at->state = AT_STATE_UNSOLICITED_CMD;  in at_state_process_result()
252 	if (at_parse_result(at->buf, buf, &result) == 0) {  in at_state_process_result()
253 		if (at->finish) {  in at_state_process_result()
258 			at->finish(at, result, cme_err);  in at_state_process_result()
263 	at->cmd_state = AT_CMD_START;  in at_state_process_result()
264 	at->state = AT_STATE_START;  in at_state_process_result()
269 int cme_handle(struct at_client *at)  in cme_handle()  argument
274 	if (!at_get_number(at, &val) && val <= CME_ERROR_NETWORK_NOT_ALLOWED) {  in cme_handle()
280 	if (at->finish) {  in cme_handle()
281 		at->finish(at, AT_RESULT_CME_ERROR, cme_err);  in cme_handle()
287 static int at_state_process_ag_nw_err(struct at_client *at, struct net_buf *buf)  in at_state_process_ag_nw_err()  argument
289 	at->cmd_state = AT_CMD_GET_VALUE;  in at_state_process_ag_nw_err()
290 	return at_parse_cmd_input(at, buf, NULL, cme_handle,  in at_state_process_ag_nw_err()
294 static int at_state_unsolicited_cmd(struct at_client *at, struct net_buf *buf)  in at_state_unsolicited_cmd()  argument
296 	if (at->unsolicited) {  in at_state_unsolicited_cmd()
297 		return at->unsolicited(at, buf);  in at_state_unsolicited_cmd()
316 int at_parse_input(struct at_client *at, struct net_buf *buf)  in at_parse_input()  argument
321 		if (at->state < AT_STATE_START || at->state >= AT_STATE_END) {  in at_parse_input()
324 		ret = parser_cb[at->state](at, buf);  in at_parse_input()
327 			at->cmd_state = AT_CMD_START;  in at_parse_input()
328 			at->state = AT_STATE_START;  in at_parse_input()
336 static int at_cmd_start(struct at_client *at, struct net_buf *buf,  in at_cmd_start()  argument
340 	if (!str_has_prefix(at->buf, prefix)) {  in at_cmd_start()
342 			at->state = AT_STATE_UNSOLICITED_CMD;  in at_cmd_start()
351 		at->cmd_state = AT_CMD_PROCESS_VALUE;  in at_cmd_start()
353 		at->cmd_state = AT_CMD_GET_VALUE;  in at_cmd_start()
359 static int at_cmd_get_value(struct at_client *at, struct net_buf *buf,  in at_cmd_get_value()  argument
364 	reset_buffer(at);  in at_cmd_get_value()
365 	return get_cmd_value(at, buf, '\r', AT_CMD_PROCESS_VALUE);  in at_cmd_get_value()
368 static int at_cmd_process_value(struct at_client *at, struct net_buf *buf,  in at_cmd_process_value()  argument
374 	ret = func(at);  in at_cmd_process_value()
375 	at->cmd_state = AT_CMD_STATE_END_LF;  in at_cmd_process_value()
380 static int at_cmd_state_end_lf(struct at_client *at, struct net_buf *buf,  in at_cmd_state_end_lf()  argument
391 	at->cmd_state = AT_CMD_START;  in at_cmd_state_end_lf()
392 	at->state = AT_STATE_START;  in at_cmd_state_end_lf()
404 int at_parse_cmd_input(struct at_client *at, struct net_buf *buf,  in at_parse_cmd_input()  argument
411 		if (at->cmd_state < AT_CMD_START ||  in at_parse_cmd_input()
412 		    at->cmd_state >= AT_CMD_STATE_END) {  in at_parse_cmd_input()
415 		ret = cmd_parser_cb[at->cmd_state](at, buf, prefix, func, type);  in at_parse_cmd_input()
420 		if (at->state == AT_STATE_START) {  in at_parse_cmd_input()
428 int at_has_next_list(struct at_client *at)  in at_has_next_list()  argument
430 	return at->buf[at->pos] != '\0';  in at_has_next_list()
433 int at_open_list(struct at_client *at)  in at_open_list()  argument
435 	skip_space(at);  in at_open_list()
438 	if (at->buf[at->pos] != '(') {  in at_open_list()
441 	at->pos++;  in at_open_list()
446 int at_close_list(struct at_client *at)  in at_close_list()  argument
448 	skip_space(at);  in at_close_list()
450 	if (at->buf[at->pos] != ')') {  in at_close_list()
453 	at->pos++;  in at_close_list()
455 	next_list(at);  in at_close_list()
460 int at_list_get_string(struct at_client *at, char *name, uint8_t len)  in at_list_get_string()  argument
464 	skip_space(at);  in at_list_get_string()
466 	if (at->buf[at->pos] != '"') {  in at_list_get_string()
469 	at->pos++;  in at_list_get_string()
471 	while (at->buf[at->pos] != '\0' && at->buf[at->pos] != '"') {  in at_list_get_string()
475 		name[i++] = at->buf[at->pos++];  in at_list_get_string()
484 	if (at->buf[at->pos] != '"') {  in at_list_get_string()
487 	at->pos++;  in at_list_get_string()
489 	skip_space(at);  in at_list_get_string()
490 	next_list(at);  in at_list_get_string()
495 int at_list_get_range(struct at_client *at, uint32_t *min, uint32_t *max)  in at_list_get_range()  argument
500 	ret = at_get_number(at, &low);  in at_list_get_range()
505 	if (at->buf[at->pos] == '-') {  in at_list_get_range()
506 		at->pos++;  in at_list_get_range()
510 	if (isdigit((unsigned char)at->buf[at->pos]) == 0) {  in at_list_get_range()
514 	ret = at_get_number(at, &high);  in at_list_get_range()
522 	next_list(at);  in at_list_get_range()
527 void at_register_unsolicited(struct at_client *at, at_resp_cb_t unsolicited)  in at_register_unsolicited()  argument
529 	at->unsolicited = unsolicited;  in at_register_unsolicited()
532 void at_register(struct at_client *at, at_resp_cb_t resp, at_finish_cb_t finish)  in at_register()  argument
534 	at->resp = resp;  in at_register()
535 	at->finish = finish;  in at_register()
536 	at->state = AT_STATE_START;  in at_register()