mirror of https://gerrit.osmocom.org/libosmocore
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/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
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* |
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* All Rights Reserved |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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*/ |
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#include <stdio.h> |
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#include <errno.h> |
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#include <osmocom/core/sercomm.h> |
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#include <osmocom/core/msgb.h> |
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struct osmo_sercomm_inst g_osi; |
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static const uint8_t valid_dlci3[] = { 0x7E, 3, 0x03, 'f', 'o', 'o', 0x7E }; |
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static const uint8_t valid_dlci23[] = { 0x7E, 23, 0x03, '2', '3', 0x7E }; |
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static const uint8_t valid_dlci23esc[] = { 0x7E, 23, 0x03, 0x7D, '2' ^ (1 << 5), '3', 0x7E }; |
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static const uint8_t valid_echo[] = { 0x7E, SC_DLCI_ECHO, 0x03, 'e', 'c', 'h', 'o', 0x7E }; |
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static void rx_ser_data(struct osmo_sercomm_inst *sc, const uint8_t *data, unsigned int len) |
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{ |
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unsigned int i; |
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printf("Feeding data into sercomm: %s\n", osmo_hexdump(data, len)); |
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for (i = 0; i < len; i++) { |
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int rc = osmo_sercomm_drv_rx_char(sc, data[i]); |
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OSMO_ASSERT(rc == 1); |
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} |
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} |
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static void dlci_rx_cb(struct osmo_sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg) |
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{ |
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printf("%s(): %s\n", __func__, msgb_hexdump(msg)); |
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} |
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static struct msgb *create_mahlzeit_msg(void) |
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{ |
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struct msgb *msg = osmo_sercomm_alloc_msgb(10); |
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OSMO_ASSERT(msg); |
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msgb_put_u8(msg, 'M'); |
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msgb_put_u8(msg, 'a'); |
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msgb_put_u8(msg, 'h'); |
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msgb_put_u8(msg, 'l'); |
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msgb_put_u8(msg, 'z'); |
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msgb_put_u8(msg, 'e'); |
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msgb_put_u8(msg, 'i'); |
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msgb_put_u8(msg, 't'); |
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return msg; |
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} |
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static void drain_from_uart_side(struct osmo_sercomm_inst *osi) |
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{ |
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uint8_t ch; |
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int rc; |
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printf("Draining from UART: "); |
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while ((rc = osmo_sercomm_drv_pull(osi, &ch) == 1)) |
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printf("0x%02x ", ch); |
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printf("\n"); |
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} |
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static void test_echo(struct osmo_sercomm_inst *osi) |
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{ |
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printf("Testing built-in echo DLCI\n"); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
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rx_ser_data(osi, valid_echo, sizeof(valid_echo)); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 1); |
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drain_from_uart_side(osi); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, SC_DLCI_ECHO) == 0); |
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} |
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static void test_sercomm(void) |
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{ |
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int rc; |
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uint8_t ch; |
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struct msgb *msg; |
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printf("Initializing sercomm_inst\n"); |
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osmo_sercomm_init(&g_osi); |
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g_osi.uart_id = 2342; |
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printf("Registering callback for invalid DLCI\n"); |
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rc = osmo_sercomm_register_rx_cb(&g_osi, 255, NULL); |
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OSMO_ASSERT(rc == -EINVAL); |
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printf("Registering callback for valid DLCI\n"); |
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rc = osmo_sercomm_register_rx_cb(&g_osi, 23, &dlci_rx_cb); |
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OSMO_ASSERT(rc == 0); |
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printf("Checking reject of overlod of valid DLCI\n"); |
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rc = osmo_sercomm_register_rx_cb(&g_osi, 23, NULL); |
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OSMO_ASSERT(rc == -EBUSY); |
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printf("Checking Rx of incoming msg for valid DLCI\n"); |
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rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
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printf("Checking Rx of incoming msg for unequipped DLCI\n"); |
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rx_ser_data(&g_osi, valid_dlci3, sizeof(valid_dlci3)); |
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printf("Checking Rx of incoming msg for valid DLCI\n"); |
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rx_ser_data(&g_osi, valid_dlci23, sizeof(valid_dlci23)); |
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printf("Checking Rx of incoming msg with escaped char for valid DLCI\n"); |
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rx_ser_data(&g_osi, valid_dlci23esc, sizeof(valid_dlci23esc)); |
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printf("Checking that no chars are to be transmitted\n"); |
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OSMO_ASSERT(osmo_sercomm_drv_pull(&g_osi, &ch) == 0); |
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printf("Transmitting msgb through sercomm\n"); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
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msg = create_mahlzeit_msg(); |
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osmo_sercomm_sendmsg(&g_osi, 42, msg); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 1); |
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drain_from_uart_side(&g_osi); |
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OSMO_ASSERT(osmo_sercomm_tx_queue_depth(&g_osi, 42) == 0); |
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test_echo(&g_osi); |
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} |
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int main(int argc, char **argv) |
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{ |
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test_sercomm(); |
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} |
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@ -0,0 +1,21 @@ |
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Initializing sercomm_inst |
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Registering callback for invalid DLCI |
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Registering callback for valid DLCI |
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Checking reject of overlod of valid DLCI |
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Checking Rx of incoming msg for valid DLCI |
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Feeding data into sercomm: 7e 17 03 32 33 7e |
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dlci_rx_cb(): 32 33 |
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Checking Rx of incoming msg for unequipped DLCI |
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Feeding data into sercomm: 7e 03 03 66 6f 6f 7e |
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Checking Rx of incoming msg for valid DLCI |
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Feeding data into sercomm: 7e 17 03 32 33 7e |
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dlci_rx_cb(): 32 33 |
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Checking Rx of incoming msg with escaped char for valid DLCI |
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Feeding data into sercomm: 7e 17 03 7d 12 33 7e |
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dlci_rx_cb(): 32 33 |
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Checking that no chars are to be transmitted |
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Transmitting msgb through sercomm |
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Draining from UART: 0x7e 0x2a 0x03 0x4d 0x61 0x68 0x6c 0x7a 0x65 0x69 0x74 0x7e |
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Testing built-in echo DLCI |
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Feeding data into sercomm: 7e 80 03 65 63 68 6f 7e |
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Draining from UART: 0x7e 0x80 0x03 0x65 0x63 0x68 0x6f 0x7e |
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