feat(mp-ble): add support for ATT client operation

epicardium/ble/epic_att_api.c

@@ -25,15 +25,29 @@ static int next_handle                        = ATTS_DYN_START_HANDLE;
 
 void ble_epic_att_api_event(attEvt_t *att_event)
 {
-	if (att_event->handle >= ATTS_DYN_START_HANDLE &&
-	    att_event->handle < next_handle) {
-		attEvt_t *e = WsfBufAlloc(sizeof(*e));
+	if (att_event->hdr.event != ATTS_HANDLE_VALUE_CNF ||
+	    (att_event->handle >= ATTS_DYN_START_HANDLE &&
+	     att_event->handle < next_handle)) {
+		size_t value_len = 0;
+		if (att_event->hdr.event == ATTC_READ_BY_GROUP_TYPE_RSP ||
+		    att_event->hdr.event == ATTC_READ_BY_TYPE_RSP ||
+		    att_event->hdr.event == ATTC_FIND_INFO_RSP ||
+		    att_event->hdr.event == ATTC_HANDLE_VALUE_NTF ||
+		    att_event->hdr.event == ATTC_HANDLE_VALUE_IND) {
+			value_len = att_event->valueLen;
+		}
+		attEvt_t *e = WsfBufAlloc(sizeof(*e) + value_len);
 
 		if (e) {
 			memcpy(e, att_event, sizeof(*e));
+			memcpy(e + 1, att_event->pValue, value_len);
 			ble_epic_ble_api_trigger_event(BLE_EVENT_ATT_EVENT, e);
 		} else {
-			LOG_WARN("ble", "could not allocate att event");
+			LOG_WARN(
+				"ble",
+				"could not allocate att event of size %d",
+				sizeof(*e) + att_event->valueLen
+			);
 		}
 	}
 }
@@ -278,3 +292,70 @@ int epic_ble_atts_set_attr(
 	uint8_t ret = AttsSetAttr(handle, value_len, (uint8_t *)value);
 	return ret;
 }
+
+int epic_ble_attc_discover_primary_services(
+	uint8_t connId, const uint8_t *uuid, uint8_t uuid_len
+) {
+	if (uuid_len == 0 || uuid == NULL) {
+		AttcReadByGroupTypeReq(
+			connId, 1, 0xFFFF, 2, (uint8_t *)attPrimSvcUuid, TRUE
+		);
+	} else {
+		AttcFindByTypeValueReq(
+			connId,
+			ATT_HANDLE_START,
+			ATT_HANDLE_MAX,
+			ATT_UUID_PRIMARY_SERVICE,
+			uuid_len,
+			(uint8_t *)uuid,
+			FALSE
+		);
+	}
+	return 0;
+}
+
+int epic_ble_attc_discover_characteristics(
+	uint8_t connId, uint16_t start_handle, uint16_t end_handle
+) {
+	AttcReadByTypeReq(
+		connId,
+		start_handle,
+		end_handle,
+		ATT_16_UUID_LEN,
+		(uint8_t *)attChUuid,
+		TRUE
+	);
+	return 0;
+}
+
+int epic_ble_attc_discover_descriptors(
+	uint8_t connId, uint16_t start_handle, uint16_t end_handle
+) {
+	AttcFindInfoReq(connId, start_handle, end_handle, TRUE);
+	return 0;
+}
+
+int epic_ble_attc_read(uint8_t connId, uint16_t value_handle)
+{
+	AttcReadReq(connId, value_handle);
+	return 0;
+}
+
+int epic_ble_attc_write_no_rsp(
+	uint8_t connId,
+	uint16_t value_handle,
+	const uint8_t *value,
+	uint16_t value_len
+) {
+	AttcWriteCmd(connId, value_handle, value_len, (uint8_t *)value);
+	return 0;
+}
+int epic_ble_attc_write(
+	uint8_t connId,
+	uint16_t value_handle,
+	const uint8_t *value,
+	uint16_t value_len
+) {
+	AttcWriteReq(connId, value_handle, value_len, (uint8_t *)value);
+	return 0;
+}