/* main.c */ /* dev2 - Multi-purpose development board using USB and Ethernet. {{{ * * Copyright (C) 2009 Nicolas Schodet * * APBTeam: * Web: http://apbteam.org/ * Email: team AT apbteam DOT org * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * }}} */ #include "common.h" #include "modules/usb/usb.h" #include "io.h" #include #include "descriptors.h" #include "common/select.h" HANDLES_EVENT (USB_Connect); HANDLES_EVENT (USB_Disconnect); HANDLES_EVENT (USB_ConfigurationChanged); HANDLES_EVENT (USB_UnhandledControlPacket); volatile uint8_t usb_connected, usb_configured; void gpio_task (void) { Endpoint_SelectEndpoint (GPIO_RX_EPNUM); /* If data is available from USB: */ if (Endpoint_ReadWriteAllowed ()) { /* Read as much as possible, and clear endpoint. */ do { Endpoint_Discard_Byte (); } while (Endpoint_ReadWriteAllowed ()); Endpoint_ClearCurrentBank (); /* Now, print current GPIO state if possible. */ Endpoint_SelectEndpoint (GPIO_TX_EPNUM); if (Endpoint_ReadWriteAllowed ()) { uint8_t i, pin; pin = PIND; for (i = 0; i < 8; i++) { Endpoint_Write_Byte (pin & 0x80 ? '1' : '0'); pin <<= 1; } Endpoint_Write_Byte ('\r'); Endpoint_ClearCurrentBank (); } } } int main (void) { /* Disable watchdog if enabled by bootloader/fuses. */ MCUSR &= ~(1 << WDRF); wdt_disable (); /* Disable Clock Division. */ SetSystemClockPrescaler (0); /* Initialise hardware. */ select_init (); /* Initialize USB Subsystem. */ USB_Init (); /* Main loop. */ while (1) { if (usb_connected) USB_USBTask (); if (usb_configured) { gpio_task (); } } } EVENT_HANDLER (USB_Connect) { usb_connected = 1; } EVENT_HANDLER (USB_Disconnect) { usb_connected = 0; usb_configured = 0; } EVENT_HANDLER (USB_ConfigurationChanged) { /* Setup Rx and Tx Endpoints for the first port. */ Endpoint_ConfigureEndpoint (GPIO_TX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN, GPIO_TX_EPSIZE, ENDPOINT_BANK_SINGLE); Endpoint_ConfigureEndpoint (GPIO_RX_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT, GPIO_RX_EPSIZE, ENDPOINT_BANK_SINGLE); /* Start tasks. */ usb_configured = 1; } EVENT_HANDLER (USB_UnhandledControlPacket) { /* Process TS specific control requests. */ switch (bRequest) { /* Switch back to DFU mode. */ case 0: if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE)) { Endpoint_ClearSetupReceived (); /* Send acknowledgement and wait for it to be sent. */ Endpoint_ClearSetupIN (); while (!Endpoint_IsSetupINReady ()) ; USB_ShutDown (); /* Jump to bootloader. */ ((void (*) (void)) 0x3000) (); } break; /* Select output. */ case 1: if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE)) { /* Selector parameter. */ uint8_t output = Endpoint_Read_Byte (); Endpoint_ClearSetupReceived (); /* Select output. */ select_out (output); /* Send acknowledgement. */ Endpoint_ClearSetupIN (); } break; /* Set GPIO. */ case 0x80: if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE)) { /* GPIO parameter. */ uint8_t ddr = Endpoint_Read_Byte (); uint8_t port = Endpoint_Read_Byte (); Endpoint_ClearSetupReceived (); /* Set GPIO. */ DDRD = ddr; PORTD = port; /* Send acknowledgement. */ Endpoint_ClearSetupIN (); } break; } }