Steve Karg
141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
/**
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* @file
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* @brief XMEGA-A3BU BACnet application
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* @author Steve Karg <skarg@users.sourceforge.net>
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* @date 2014
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* @copyright SPDX-License-Identifier: MIT
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*/
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#include <asf.h>
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#include "bacnet/basic/object/device.h"
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#include "bacnet/basic/sys/mstimer.h"
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#include "bacnet/datalink/datalink.h"
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#include "bacnet/datalink/dlmstp.h"
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#include "bacnet/datalink/mstp.h"
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#include "rs485.h"
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#include "led.h"
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#include "adc-hdw.h"
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#include "bacnet.h"
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#include "nvmdata.h"
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static struct mstimer_callback_data_t BACnet_Callback;
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/* MS/TP port */
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static struct mstp_port_struct_t MSTP_Port;
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static struct dlmstp_rs485_driver RS485_Driver = {
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.init = rs485_init,
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.send = rs485_bytes_send,
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.read = rs485_byte_available,
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.transmitting = rs485_rts_enabled,
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.baud_rate = rs485_baud_rate,
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.baud_rate_set = rs485_baud_rate_set,
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.silence_milliseconds = rs485_silence_milliseconds,
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.silence_reset = rs485_silence_reset
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};
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static struct dlmstp_user_data_t MSTP_User_Data;
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static uint8_t Input_Buffer[DLMSTP_MPDU_MAX];
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static uint8_t Output_Buffer[DLMSTP_MPDU_MAX];
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/**
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* Initializes some data from non-volatile memory module
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*/
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static void nvm_data_init(void)
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{
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uint32_t device_id = 127;
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uint8_t max_master = 127;
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uint8_t mac_address = 127;
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uint8_t kbaud_rate = 38;
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nvm_read(NVM_BAUD_K, &kbaud_rate, 1);
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rs485_kbaud_rate_set(kbaud_rate);
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nvm_read(NVM_MAC_ADDRESS, &mac_address, 1);
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dlmstp_set_mac_address(mac_address);
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nvm_read(NVM_MAX_MASTER, &max_master, 1);
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if (max_master > 127) {
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max_master = 127;
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}
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dlmstp_set_max_master(max_master);
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/* Get the device ID from the EEPROM */
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nvm_read(NVM_DEVICE_0, (uint8_t *)&device_id, sizeof(device_id));
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if (device_id < BACNET_MAX_INSTANCE) {
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Device_Set_Object_Instance_Number(device_id);
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} else {
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Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE);
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}
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}
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/**
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* @brief MS/TP configuraiton
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*/
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static void dlmstp_configure(void)
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{
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uint8_t mac_address = 0;
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/* initialize MSTP datalink layer */
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MSTP_Port.Nmax_info_frames = DLMSTP_MAX_INFO_FRAMES;
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MSTP_Port.Nmax_master = DLMSTP_MAX_MASTER;
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MSTP_Port.InputBuffer = Input_Buffer;
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MSTP_Port.InputBufferSize = sizeof(Input_Buffer);
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MSTP_Port.OutputBuffer = Output_Buffer;
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MSTP_Port.OutputBufferSize = sizeof(Output_Buffer);
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/* user data */
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mac_address = dlmstp_mac_address();
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if (mac_address == 255) {
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MSTP_Port.ZeroConfigEnabled = true;
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} else {
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MSTP_Port.ZeroConfigEnabled = false;
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}
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if (mac_address <= 127) {
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MSTP_Port.SlaveNodeEnabled = false;
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} else {
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MSTP_Port.SlaveNodeEnabled = true;
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}
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MSTP_Port.CheckAutoBaud = false;
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if (!MSTP_Port.CheckAutoBaud) {
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/* FIXME: get the baud rate from hardware DIP or from EEPROM */
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dlmstp_set_baud_rate(DLMSTP_BAUD_RATE_DEFAULT);
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}
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MSTP_Zero_Config_UUID_Init(&MSTP_Port);
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MSTP_User_Data.RS485_Driver = &RS485_Driver;
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MSTP_Port.UserData = &MSTP_User_Data;
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dlmstp_init((char *)&MSTP_Port);
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}
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/**
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* \brief Main function.
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*
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* Initializes the board, and runs the application in an infinite loop.
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*/
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int main(void)
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{
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/* hardware initialization */
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sysclk_init();
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board_init();
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pmic_init();
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mstimer_init();
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rs485_init();
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led_init();
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adc_init();
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#ifdef CONF_BOARD_ENABLE_RS485_XPLAINED
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// Enable display backlight
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gpio_set_pin_high(NHD_C12832A1Z_BACKLIGHT);
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#endif
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// Workaround for known issue: Enable RTC32 sysclk
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sysclk_enable_module(SYSCLK_PORT_GEN, SYSCLK_RTC);
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while (RTC32.SYNCCTRL & RTC32_SYNCBUSY_bm) {
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// Wait for RTC32 sysclk to become stable
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}
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cpu_irq_enable();
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/* application initialization */
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nvm_data_init();
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dlmstp_configure();
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bacnet_init();
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/* run forever - timed tasks */
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mstimer_callback(&BACnet_Callback, bacnet_task_timed, 5);
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for (;;) {
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bacnet_task();
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led_task();
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}
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}
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