| |
| /* (C) 2017 by Harald Welte <laforge@gnumonks.org> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| |
| #include <osmocom/core/sercomm.h> |
| #include <osmocom/core/msgb.h> |
| |
| struct osmo_sercomm_inst g_osi; |
| |
| static const uint8_t valid_dlci3[] = { 0x7E, 3, 0x03, 'f', 'o', 'o', 0x7E }; |
| static const uint8_t valid_dlci23[] = { 0x7E, 23, 0x03, '2', '3', 0x7E }; |
| static const uint8_t valid_dlci23esc[] = { 0x7E, 23, 0x03, 0x7D, '2' ^ (1 << 5), '3', 0x7E }; |
| static const uint8_t valid_echo[] = { 0x7E, SC_DLCI_ECHO, 0x03, 'e', 'c', 'h', 'o', 0x7E }; |
| |
| static void rx_ser_data(struct osmo_sercomm_inst *sc, const uint8_t *data, unsigned int len) |
| { |
| unsigned int i; |
| |
| printf("Feeding data into sercomm: %s\n", osmo_hexdump(data, len)); |
| for (i = 0; i < len; i++) { |
| int rc = osmo_sercomm_drv_rx_char(sc, data[i]); |
| OSMO_ASSERT(rc == 1); |
| } |
| } |
| |
| |
| static void dlci_rx_cb(struct osmo_sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg) |
| { |
| printf("%s(): %s\n", __func__, msgb_hexdump(msg)); |
| msgb_free(msg); |
| } |
| |
| static struct msgb *create_mahlzeit_msg(void) |
| { |
| struct msgb *msg = osmo_sercomm_alloc_msgb(10); |
| OSMO_ASSERT(msg); |
| msgb_put_u8(msg, 'M'); |
| msgb_put_u8(msg, 'a'); |
| msgb_put_u8(msg, 'h'); |
| msgb_put_u8(msg, 'l'); |
| msgb_put_u8(msg, 'z'); |
| msgb_put_u8(msg, 'e'); |
| msgb_put_u8(msg, 'i'); |
| msgb_put_u8(msg, 't'); |
| return msg; |
| } |
| |
| static void drain_from_uart_side(struct osmo_sercomm_inst *osi) |
| { |
| uint8_t ch; |
| int rc; |
| |
| printf("Draining from UART: "); |
| while ((rc = osmo_sercomm_drv_pull(osi, &ch) == 1)) |
| printf("0x%02x ", ch); |
| printf("\n"); |
| } |
| |
| static void test_echo(struct osmo_sercomm_inst *osi) |
| { |
| printf("Testing built-in echo DLCI\n"); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
| rx_ser_data(osi, valid_echo, sizeof(valid_echo)); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 1); |
| drain_from_uart_side(osi); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
| } |
| |
| static void test_sercomm(void) |
| { |
| int rc; |
| uint8_t ch; |
| struct msgb *msg; |
| |
| printf("Initializing sercomm_inst\n"); |
| osmo_sercomm_init(&g_osi); |
| g_osi.uart_id = 2342; |
| |
| printf("Registering callback for invalid DLCI\n"); |
| rc = osmo_sercomm_register_rx_cb(&g_osi, 255, NULL); |
| OSMO_ASSERT(rc == -EINVAL); |
| |
| printf("Registering callback for valid DLCI\n"); |
| rc = osmo_sercomm_register_rx_cb(&g_osi, 23, &dlci_rx_cb); |
| OSMO_ASSERT(rc == 0); |
| |
| printf("Checking reject of overlod of valid DLCI\n"); |
| rc = osmo_sercomm_register_rx_cb(&g_osi, 23, NULL); |
| OSMO_ASSERT(rc == -EBUSY); |
| |
| printf("Checking Rx of incoming msg for valid DLCI\n"); |
| rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
| printf("Checking Rx of incoming msg for unequipped DLCI\n"); |
| rx_ser_data(&g_osi, valid_dlci3, sizeof(valid_dlci3)); |
| printf("Checking Rx of incoming msg for valid DLCI\n"); |
| rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
| printf("Checking Rx of incoming msg with escaped char for valid DLCI\n"); |
| rx_ser_data(&g_osi, valid_dlci23esc, sizeof(valid_dlci23esc)); |
| |
| printf("Checking that no chars are to be transmitted\n"); |
| OSMO_ASSERT(osmo_sercomm_drv_pull(&g_osi, &ch) == 0); |
| |
| printf("Transmitting msgb through sercomm\n"); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
| msg = create_mahlzeit_msg(); |
| osmo_sercomm_sendmsg(&g_osi, 42, msg); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 1); |
| drain_from_uart_side(&g_osi); |
| OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
| |
| test_echo(&g_osi); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| test_sercomm(); |
| return 0; |
| } |