1 /* 2 * Copyright (c) 2019 Alexander Wachter 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_SUBSYS_CANBUS_ISOTP_ISOTP_INTERNAL_H_ 8 #define ZEPHYR_SUBSYS_CANBUS_ISOTP_ISOTP_INTERNAL_H_ 9 10 #include <zephyr/canbus/isotp.h> 11 #include <zephyr/sys/slist.h> 12 13 /* Protocol control information*/ 14 #define ISOTP_PCI_SF 0x00 /* Single frame*/ 15 #define ISOTP_PCI_FF 0x01 /* First frame */ 16 #define ISOTP_PCI_CF 0x02 /* Consecutive frame */ 17 #define ISOTP_PCI_FC 0x03 /* Flow control frame */ 18 19 #define ISOTP_PCI_TYPE_BYTE 0 20 #define ISOTP_PCI_TYPE_POS 4 21 #define ISOTP_PCI_TYPE_MASK 0xF0 22 #define ISOTP_PCI_TYPE_SF (ISOTP_PCI_SF << ISOTP_PCI_TYPE_POS) 23 #define ISOTP_PCI_TYPE_FF (ISOTP_PCI_FF << ISOTP_PCI_TYPE_POS) 24 #define ISOTP_PCI_TYPE_CF (ISOTP_PCI_CF << ISOTP_PCI_TYPE_POS) 25 #define ISOTP_PCI_TYPE_FC (ISOTP_PCI_FC << ISOTP_PCI_TYPE_POS) 26 27 #define ISOTP_PCI_SF_DL_MASK 0x0F 28 29 #define ISOTP_PCI_FF_DL_UPPER_BYTE 0 30 #define ISOTP_PCI_FF_DL_UPPER_MASK 0x0F 31 #define ISOTP_PCI_FF_DL_LOWER_BYTE 1 32 33 #define ISOTP_PCI_FS_BYTE 0 34 #define ISOTP_PCI_FS_MASK 0x0F 35 #define ISOTP_PCI_BS_BYTE 1 36 #define ISOTP_PCI_ST_MIN_BYTE 2 37 38 #define ISOTP_PCI_FS_CTS 0x0 39 #define ISOTP_PCI_FS_WAIT 0x1 40 #define ISOTP_PCI_FS_OVFLW 0x2 41 42 #define ISOTP_PCI_SN_MASK 0x0F 43 44 #define ISOTP_FF_DL_MIN 8 45 #define ISOTP_PADDED_FRAME_DL_MIN 8 46 #define ISOTP_PAD_BYTE 0xCC 47 48 #define ISOTP_STMIN_MAX 0xFA 49 #define ISOTP_STMIN_MS_MAX 0x7F 50 #define ISOTP_STMIN_US_BEGIN 0xF1 51 #define ISOTP_STMIN_US_END 0xF9 52 53 #define ISOTP_WFT_FIRST 0xFF 54 55 #define ISOTP_4BIT_SF_MAX_CAN_DL 8 56 57 #define ISOTP_BS_TIMEOUT_MS (CONFIG_ISOTP_BS_TIMEOUT) 58 #define ISOTP_A_TIMEOUT_MS (CONFIG_ISOTP_A_TIMEOUT) 59 #define ISOTP_CR_TIMEOUT_MS (CONFIG_ISOTP_CR_TIMEOUT) 60 61 /* Just before the sender would time out*/ 62 #define ISOTP_ALLOC_TIMEOUT_MS (CONFIG_ISOTP_A_TIMEOUT - 100) 63 64 #ifdef __cplusplus 65 extern "C" { 66 #endif 67 68 enum isotp_rx_state { 69 ISOTP_RX_STATE_WAIT_FF_SF, 70 ISOTP_RX_STATE_PROCESS_SF, 71 ISOTP_RX_STATE_PROCESS_FF, 72 ISOTP_RX_STATE_TRY_ALLOC, 73 ISOTP_RX_STATE_SEND_FC, 74 ISOTP_RX_STATE_WAIT_CF, 75 ISOTP_RX_STATE_SEND_WAIT, 76 ISOTP_RX_STATE_ERR, 77 ISOTP_RX_STATE_RECYCLE, 78 ISOTP_RX_STATE_UNBOUND 79 }; 80 81 enum isotp_tx_state { 82 ISOTP_TX_STATE_RESET, 83 ISOTP_TX_SEND_SF, 84 ISOTP_TX_SEND_FF, 85 ISOTP_TX_WAIT_FC, 86 ISOTP_TX_SEND_CF, 87 ISOTP_TX_WAIT_ST, 88 ISOTP_TX_WAIT_BACKLOG, 89 ISOTP_TX_WAIT_FIN, 90 ISOTP_TX_ERR 91 }; 92 93 struct isotp_global_ctx { 94 sys_slist_t alloc_list; 95 sys_slist_t ff_sf_alloc_list; 96 }; 97 98 #ifdef __cplusplus 99 } 100 #endif 101 102 #endif /* ZEPHYR_SUBSYS_CANBUS_ISOTP_ISOTP_INTERNAL_H_ */ 103
