/* Copyright (c) 2014, Nordic Semiconductor ASA * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include "aci_setup.h" // aci_struct that will contain // total initial credits // current credit // current state of the aci (setup/standby/active/sleep) // open remote pipe pending // close remote pipe pending // Current pipe available bitmap // Current pipe closed bitmap // Current connection interval, slave latency and link supervision timeout // Current State of the the GATT client (Service Discovery status) extern hal_aci_data_t msg_to_send; /************************************************************************** */ /* Utility function to fill the the ACI command queue */ /* aci_stat Pointer to the ACI state */ /* num_cmd_offset(in/out) Offset in the Setup message array to start from */ /* offset is updated to the new index after the queue is filled */ /* or the last message us placed in the queue */ /* Returns true if at least one message was transferred */ /***************************************************************************/ static bool aci_setup_fill(aci_state_t *aci_stat, uint8_t *num_cmd_offset) { bool ret_val = false; while (*num_cmd_offset < aci_stat->aci_setup_info.num_setup_msgs) { //Board dependent defines #if defined (__AVR__) //For Arduino copy the setup ACI message from Flash to RAM. memcpy_P(&msg_to_send, &(aci_stat->aci_setup_info.setup_msgs[*num_cmd_offset]), pgm_read_byte_near(&(aci_stat->aci_setup_info.setup_msgs[*num_cmd_offset].buffer[0]))+2); #elif defined(__PIC32MX__) || defined(__STM32__) //In ChipKit we store the setup messages in RAM //Add 2 bytes to the length byte for status byte, length for the total number of bytes memcpy(&msg_to_send, &(aci_stat->aci_setup_info.setup_msgs[*num_cmd_offset]), (aci_stat->aci_setup_info.setup_msgs[*num_cmd_offset].buffer[0]+2)); #endif //Put the Setup ACI message in the command queue if (!hal_aci_tl_send(&msg_to_send)) { //ACI Command Queue is full // *num_cmd_offset is now pointing to the index of the Setup command that did not get sent return ret_val; } ret_val = true; (*num_cmd_offset)++; } return ret_val; } uint8_t do_aci_setup(aci_state_t *aci_stat) { uint8_t setup_offset = 0; uint32_t i = 0x0000; aci_evt_t * aci_evt = NULL; aci_status_code_t cmd_status = ACI_STATUS_ERROR_CRC_MISMATCH; /* We are using the same buffer since we are copying the contents of the buffer when queuing and immediately processing the buffer when receiving */ hal_aci_evt_t *aci_data = (hal_aci_evt_t *)&msg_to_send; /* Messages in the outgoing queue must be handled before the Setup routine can run. * If it is non-empty we return. The user should then process the messages before calling * do_aci_setup() again. */ if (!lib_aci_command_queue_empty()) { return SETUP_FAIL_COMMAND_QUEUE_NOT_EMPTY; } /* If there are events pending from the device that are not relevant to setup, we return false * so that the user can handle them. At this point we don't care what the event is, * as any event is an error. */ if (lib_aci_event_peek(aci_data)) { return SETUP_FAIL_EVENT_QUEUE_NOT_EMPTY; } /* Fill the ACI command queue with as many Setup messages as it will hold. */ aci_setup_fill(aci_stat, &setup_offset); while (cmd_status != ACI_STATUS_TRANSACTION_COMPLETE) { /* This counter is used to ensure that this function does not loop forever. When the device * returns a valid response, we reset the counter. */ if (i++ > 0xFFFFE) { return SETUP_FAIL_TIMEOUT; } if (lib_aci_event_peek(aci_data)) { aci_evt = &(aci_data->evt); if (ACI_EVT_CMD_RSP != aci_evt->evt_opcode) { //Receiving something other than a Command Response Event is an error. return SETUP_FAIL_NOT_COMMAND_RESPONSE; } cmd_status = (aci_status_code_t) aci_evt->params.cmd_rsp.cmd_status; switch (cmd_status) { case ACI_STATUS_TRANSACTION_CONTINUE: //As the device is responding, reset guard counter i = 0; /* As the device has processed the Setup messages we put in the command queue earlier, * we can proceed to fill the queue with new messages */ aci_setup_fill(aci_stat, &setup_offset); break; case ACI_STATUS_TRANSACTION_COMPLETE: //Break out of the while loop when this status code appears break; default: //An event with any other status code should be handled by the application return SETUP_FAIL_NOT_SETUP_EVENT; } /* If we haven't returned at this point, the event was either ACI_STATUS_TRANSACTION_CONTINUE * or ACI_STATUS_TRANSACTION_COMPLETE. We don't need the event itself, so we simply * remove it from the queue. */ lib_aci_event_get (aci_stat, aci_data); } } return SETUP_SUCCESS; }