X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=hantek_6022be.c;h=91a959e24439cd7705e21e2f4ad62bf3e8a70d2d;hb=02d3622255a4eee3aa6ed3ab86b24885cef92544;hp=79c8264ad664b4eb21107b949ac5951b400e0688;hpb=1974eccb66634e2d7535a892d1c703665f757408;p=sigrok-firmware-fx2lafw.git
diff --git a/hantek_6022be.c b/hantek_6022be.c
index 79c8264a..91a959e2 100644
--- a/hantek_6022be.c
+++ b/hantek_6022be.c
@@ -1,5 +1,7 @@
-/**
- * Copyright (C) 2009 Ubixum, Inc.
+/*
+ * This file is part of the sigrok-firmware-fx2lafw project.
+ *
+ * Copyright (C) 2009 Ubixum, Inc.
* Copyright (C) 2015 Jochen Hoenicke
*
* This library is free software; you can redistribute it and/or
@@ -13,9 +15,8 @@
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- **/
+ * License along with this library; if not, see .
+ */
#include
#include
@@ -23,485 +24,445 @@
#include
#include
-#ifdef DEBUG_FIRMWARE
-#include
-#include
-#else
-#define printf(...)
-#endif
-
-volatile WORD ledcounter = 0;
-
-
-volatile __bit dosud=FALSE;
-volatile __bit dosuspend=FALSE;
-
-// custom functions
-extern void main_loop();
-extern void main_init();
-
-void main() {
-
- SETCPUFREQ(CLK_12M); // save energy
-
- main_init();
-
- // set up interrupts.
- USE_USB_INTS();
-
- ENABLE_SUDAV();
- ENABLE_USBRESET();
- ENABLE_HISPEED();
- ENABLE_SUSPEND();
- ENABLE_RESUME();
-
- EA=1;
-
- // init timer2
- RCAP2L = -500 & 0xff;
- RCAP2H = (-500 >> 8) & 0xff;
- T2CON = 0;
- ET2 = 1;
- TR2 = 1;
-
-// iic files (c2 load) don't need to renumerate/delay
-// trm 3.6
-#ifndef NORENUM
- RENUMERATE();
-#else
- USBCS &= ~bmDISCON;
-#endif
-
- PORTCCFG = 0;
- PORTACFG = 0;
- OEC = 0xff;
- OEA = 0x80;
-
- while(TRUE) {
-
- main_loop();
-
- if (dosud) {
- dosud=FALSE;
- handle_setupdata();
- }
-
- if (dosuspend) {
- dosuspend=FALSE;
- do {
- printf ( "I'm going to Suspend.\n" );
- WAKEUPCS |= bmWU|bmWU2; // make sure ext wakeups are cleared
- SUSPEND=1;
- PCON |= 1;
- __asm
- nop
- nop
- nop
- nop
- nop
- nop
- nop
- __endasm;
- } while ( !remote_wakeup_allowed && REMOTE_WAKEUP());
- printf ( "I'm going to wake up.\n");
-
- // resume
- // trm 6.4
- if ( REMOTE_WAKEUP() ) {
- delay(5);
- USBCS |= bmSIGRESUME;
- delay(15);
- USBCS &= ~bmSIGRESUME;
- }
-
- }
-
- } // end while
-
-} // end main
-
-void resume_isr() __interrupt RESUME_ISR {
- CLEAR_RESUME();
-}
-
-void sudav_isr() __interrupt SUDAV_ISR {
- dosud=TRUE;
- CLEAR_SUDAV();
-}
-void usbreset_isr() __interrupt USBRESET_ISR {
- handle_hispeed(FALSE);
- CLEAR_USBRESET();
-}
-void hispeed_isr() __interrupt HISPEED_ISR {
- handle_hispeed(TRUE);
- CLEAR_HISPEED();
-}
+/* Change to support as many interfaces as you need. */
+static BYTE altiface = 0;
-void suspend_isr() __interrupt SUSPEND_ISR {
- dosuspend=TRUE;
- CLEAR_SUSPEND();
-}
+static volatile WORD ledcounter = 0;
-void timer2_isr() __interrupt TF2_ISR {
- PA7 = !PA7;
- if (ledcounter) {
- if (--ledcounter == 0) {
- // clear LED
- PC0 = 1;
- PC1 = 1;
- }
- }
- TF2 = 0;
+static volatile __bit dosud = FALSE;
+static volatile __bit dosuspend = FALSE;
+
+extern __code BYTE highspd_dscr;
+extern __code BYTE fullspd_dscr;
+
+void resume_isr(void) __interrupt RESUME_ISR
+{
+ CLEAR_RESUME();
}
-/**
- * Copyright (C) 2009 Ubixum, Inc.
- * Copyright (C) 2015 Jochen Hoenicke
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- **/
-#include
-#include
+void sudav_isr(void) __interrupt SUDAV_ISR
+{
+ dosud = TRUE;
+ CLEAR_SUDAV();
+}
-#ifdef DEBUG_FIRMWARE
-#include
-#else
-#define printf(...)
-#endif
+void usbreset_isr(void) __interrupt USBRESET_ISR
+{
+ handle_hispeed(FALSE);
+ CLEAR_USBRESET();
+}
-// change to support as many interfaces as you need
-BYTE altiface = 0; // alt interface
-extern volatile WORD ledcounter;
+void hispeed_isr(void) __interrupt HISPEED_ISR
+{
+ handle_hispeed(TRUE);
+ CLEAR_HISPEED();
+}
+void suspend_isr(void) __interrupt SUSPEND_ISR
+{
+ dosuspend = TRUE;
+ CLEAR_SUSPEND();
+}
+void timer2_isr(void) __interrupt TF2_ISR
+{
+ PA7 = !PA7;
+ if (ledcounter) {
+ if (--ledcounter == 0) {
+ /* Clear LED. */
+ PC0 = 1;
+ PC1 = 1;
+ }
+ }
+ TF2 = 0;
+}
-/* This sets three bits for each channel, one channel at a time.
+/*
+ * This sets three bits for each channel, one channel at a time.
* For channel 0 we want to set bits 5, 6 & 7
* For channel 1 we want to set bits 2, 3 & 4
*
- * We convert the input values that are strange due to original firmware code into the value of the three bits as follows:
+ * We convert the input values that are strange due to original
+ * firmware code into the value of the three bits as follows:
+ *
* val -> bits
* 1 -> 010b
* 2 -> 001b
* 5 -> 000b
* 10 -> 011b
*
- * The third bit is always zero since there are only four outputs connected in the serial selector chip.
+ * The third bit is always zero since there are only four outputs connected
+ * in the serial selector chip.
*
* The multiplication of the converted value by 0x24 sets the relevant bits in
* both channels and then we mask it out to only affect the channel currently
* requested.
*/
-BOOL set_voltage(BYTE channel, BYTE val)
+static BOOL set_voltage(BYTE channel, BYTE val)
{
- BYTE bits, mask;
- switch (val) {
- case 1:
- bits = 0x24 * 2;
- break;
- case 2:
- bits = 0x24 * 1;
- break;
- case 5:
- bits = 0x24 * 0;
- break;
- case 10:
- bits = 0x24 * 3;
- break;
- default:
- return FALSE;
- }
+ BYTE bits, mask;
+
+ switch (val) {
+ case 1:
+ bits = 0x24 * 2;
+ break;
+ case 2:
+ bits = 0x24 * 1;
+ break;
+ case 5:
+ bits = 0x24 * 0;
+ break;
+ case 10:
+ bits = 0x24 * 3;
+ break;
+ default:
+ return FALSE;
+ }
+
+ mask = (channel) ? 0xe0 : 0x1c;
+ IOC = (IOC & ~mask) | (bits & mask);
- mask = channel ? 0xe0 : 0x1c;
- IOC = (IOC & ~mask) | (bits & mask);
- return TRUE;
+ return TRUE;
}
-BOOL set_numchannels(BYTE numchannels)
+static BOOL set_numchannels(BYTE numchannels)
{
- if (numchannels == 1 || numchannels == 2) {
- BYTE fifocfg = 7 + numchannels;
- EP2FIFOCFG = fifocfg;
- EP6FIFOCFG = fifocfg;
- return TRUE;
- }
- return FALSE;
+ if (numchannels == 1 || numchannels == 2) {
+ BYTE fifocfg = 7 + numchannels;
+ EP2FIFOCFG = fifocfg;
+ EP6FIFOCFG = fifocfg;
+ return TRUE;
+ }
+
+ return FALSE;
}
-void clear_fifo()
+static void clear_fifo(void)
{
- GPIFABORT = 0xff;
- SYNCDELAY3;
- FIFORESET = 0x80;
- SYNCDELAY3;
- FIFORESET = 0x82;
- SYNCDELAY3;
- FIFORESET = 0x86;
- SYNCDELAY3;
- FIFORESET = 0;
+ GPIFABORT = 0xff;
+ SYNCDELAY3;
+ FIFORESET = 0x80;
+ SYNCDELAY3;
+ FIFORESET = 0x82;
+ SYNCDELAY3;
+ FIFORESET = 0x86;
+ SYNCDELAY3;
+ FIFORESET = 0;
}
-void stop_sampling()
+static void stop_sampling(void)
{
- GPIFABORT = 0xff;
- SYNCDELAY3;
- if (altiface == 0) {
- INPKTEND = 6;
- } else {
- INPKTEND = 2;
- }
+ GPIFABORT = 0xff;
+ SYNCDELAY3;
+ INPKTEND = (altiface == 0) ? 6 : 2;
}
-void start_sampling()
+static void start_sampling(void)
{
- int i;
- clear_fifo();
-
- for (i = 0; i < 1000; i++);
- while (!(GPIFTRIG & 0x80)) {
- ;
- }
- SYNCDELAY3;
- GPIFTCB1 = 0x28;
- SYNCDELAY3;
- GPIFTCB0 = 0;
- if (altiface == 0)
- GPIFTRIG = 6;
- else
- GPIFTRIG = 4;
-
- // set green led
- // don't clear led
- ledcounter = 0;
- PC0 = 1;
- PC1 = 0;
+ int i;
+
+ clear_fifo();
+
+ for (i = 0; i < 1000; i++);
+
+ while (!(GPIFTRIG & 0x80))
+ ;
+
+ SYNCDELAY3;
+ GPIFTCB1 = 0x28;
+ SYNCDELAY3;
+ GPIFTCB0 = 0;
+ GPIFTRIG = (altiface == 0) ? 6 : 4;
+
+ /* Set green LED, don't clear LED. */
+ ledcounter = 0;
+ PC0 = 1;
+ PC1 = 0;
}
-extern __code BYTE highspd_dscr;
-extern __code BYTE fullspd_dscr;
-void select_interface(BYTE alt)
+static void select_interface(BYTE alt)
{
- const BYTE *pPacketSize = (USBCS & bmHSM ? &highspd_dscr : &fullspd_dscr)
- + (9 + 16*alt + 9 + 4);
- altiface = alt;
- if (alt == 0) {
- // bulk on port 6
- EP2CFG = 0x00;
- EP6CFG = 0xe0;
- EP6GPIFFLGSEL = 1;
-
- EP6AUTOINLENL = pPacketSize[0];
- EP6AUTOINLENH = pPacketSize[1];
- } else {
- // iso on port 2
- EP2CFG = 0xd8;
- EP6CFG = 0x00;
- EP2GPIFFLGSEL = 1;
-
- EP2AUTOINLENL = pPacketSize[0];
- EP2AUTOINLENH = pPacketSize[1] & 0x7;
- EP2ISOINPKTS = (pPacketSize[1] >> 3) + 1;
- }
+ const BYTE *pPacketSize = \
+ ((USBCS & bmHSM) ? &highspd_dscr : &fullspd_dscr)
+ + (9 + (16 * alt) + 9 + 4);
+
+ altiface = alt;
+
+ if (alt == 0) {
+ /* Bulk on EP6. */
+ EP2CFG = 0x00;
+ EP6CFG = 0xe0;
+ EP6GPIFFLGSEL = 1;
+ EP6AUTOINLENL = pPacketSize[0];
+ EP6AUTOINLENH = pPacketSize[1];
+ } else {
+ /* Iso on EP2. */
+ EP2CFG = 0xd8;
+ EP6CFG = 0x00;
+ EP2GPIFFLGSEL = 1;
+ EP2AUTOINLENL = pPacketSize[0];
+ EP2AUTOINLENH = pPacketSize[1] & 0x7;
+ EP2ISOINPKTS = (pPacketSize[1] >> 3) + 1;
+ }
}
-const struct samplerate_info {
- BYTE rate;
- BYTE wait0;
- BYTE wait1;
- BYTE opc0;
- BYTE opc1;
- BYTE out0;
- BYTE ifcfg;
+static const struct samplerate_info {
+ BYTE rate;
+ BYTE wait0;
+ BYTE wait1;
+ BYTE opc0;
+ BYTE opc1;
+ BYTE out0;
+ BYTE ifcfg;
} samplerates[] = {
- { 48,0x80, 0, 3, 0, 0x00, 0xea },
- { 30,0x80, 0, 3, 0, 0x00, 0xaa },
- { 24, 1, 0, 2, 1, 0x40, 0xca },
- { 16, 1, 1, 2, 0, 0x40, 0xca },
- { 12, 2, 1, 2, 0, 0x40, 0xca },
- { 8, 3, 2, 2, 0, 0x40, 0xca },
- { 4, 6, 5, 2, 0, 0x40, 0xca },
- { 2, 12, 11, 2, 0, 0x40, 0xca },
- { 1, 24, 23, 2, 0, 0x40, 0xca },
- { 50, 48, 47, 2, 0, 0x40, 0xca },
- { 20, 120, 119, 2, 0, 0x40, 0xca },
- { 10, 240, 239, 2, 0, 0x40, 0xca }
+ { 48, 0x80, 0, 3, 0, 0x00, 0xea },
+ { 30, 0x80, 0, 3, 0, 0x00, 0xaa },
+ { 24, 1, 0, 2, 1, 0x40, 0xca },
+ { 16, 1, 1, 2, 0, 0x40, 0xca },
+ { 12, 2, 1, 2, 0, 0x40, 0xca },
+ { 8, 3, 2, 2, 0, 0x40, 0xca },
+ { 4, 6, 5, 2, 0, 0x40, 0xca },
+ { 2, 12, 11, 2, 0, 0x40, 0xca },
+ { 1, 24, 23, 2, 0, 0x40, 0xca },
+ { 50, 48, 47, 2, 0, 0x40, 0xca },
+ { 20, 120, 119, 2, 0, 0x40, 0xca },
+ { 10, 240, 239, 2, 0, 0x40, 0xca },
};
-BOOL set_samplerate(BYTE rate)
+static BOOL set_samplerate(BYTE rate)
{
- BYTE i = 0;
- while (samplerates[i].rate != rate) {
- i++;
- if (i == sizeof(samplerates)/sizeof(samplerates[0]))
- return FALSE;
- }
-
- IFCONFIG = samplerates[i].ifcfg;
-
- AUTOPTRSETUP = 7;
- AUTOPTRH2 = 0xE4;
- AUTOPTRL2 = 0x00;
-
- /* The program for low-speed, e.g. 1 MHz, is
- * wait 24, CTL2=0, FIFO
- * wait 23, CTL2=1
- * jump 0, CTL2=1
- *
- * The program for 24 MHz is
- * wait 1, CTL2=0, FIFO
- * jump 0, CTL2=1
- *
- * The program for 30/48 MHz is:
- * jump 0, CTL2=Z, FIFO, LOOP
- */
-
- EXTAUTODAT2 = samplerates[i].wait0;
- EXTAUTODAT2 = samplerates[i].wait1;
- EXTAUTODAT2 = 1;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
-
- EXTAUTODAT2 = samplerates[i].opc0;
- EXTAUTODAT2 = samplerates[i].opc1;
- EXTAUTODAT2 = 1;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
-
- EXTAUTODAT2 = samplerates[i].out0;
- EXTAUTODAT2 = 0x44;
- EXTAUTODAT2 = 0x44;
- EXTAUTODAT2 = 0x00;
- EXTAUTODAT2 = 0x00;
- EXTAUTODAT2 = 0x00;
- EXTAUTODAT2 = 0x00;
- EXTAUTODAT2 = 0x00;
-
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
- EXTAUTODAT2 = 0;
-
- for (i = 0; i < 96; i++)
+ BYTE i = 0;
+
+ while (samplerates[i].rate != rate) {
+ i++;
+ if (i == sizeof(samplerates) / sizeof(samplerates[0]))
+ return FALSE;
+ }
+
+ IFCONFIG = samplerates[i].ifcfg;
+
+ AUTOPTRSETUP = 7;
+ AUTOPTRH2 = 0xE4; /* 0xE400: GPIF waveform descriptor 0. */
+ AUTOPTRL2 = 0x00;
+
+ /*
+ * The program for low-speed, e.g. 1 MHz, is:
+ * wait 24, CTL2=0, FIFO
+ * wait 23, CTL2=1
+ * jump 0, CTL2=1
+ *
+ * The program for 24 MHz is:
+ * wait 1, CTL2=0, FIFO
+ * jump 0, CTL2=1
+ *
+ * The program for 30/48 MHz is:
+ * jump 0, CTL2=Z, FIFO, LOOP
+ */
+
+ /* LENGTH / BRANCH 0-7 */
+ EXTAUTODAT2 = samplerates[i].wait0;
+ EXTAUTODAT2 = samplerates[i].wait1;
+ EXTAUTODAT2 = 1;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
EXTAUTODAT2 = 0;
- return TRUE;
-}
-//************************** Configuration Handlers *****************************
+ /* OPCODE 0-7 */
+ EXTAUTODAT2 = samplerates[i].opc0;
+ EXTAUTODAT2 = samplerates[i].opc1;
+ EXTAUTODAT2 = 1; /* DATA=0 DP=1 */
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
-// set *alt_ifc to the current alt interface for ifc
-BOOL handle_get_interface(BYTE ifc, BYTE* alt_ifc) {
- (void) ifc; // ignore unused parameter
- *alt_ifc=altiface;
- return TRUE;
-}
-// return TRUE if you set the interface requested
-// NOTE this function should reconfigure and reset the endpoints
-// according to the interface descriptors you provided.
-BOOL handle_set_interface(BYTE ifc,BYTE alt_ifc) {
- printf ( "Set Interface.\n" );
- if (ifc == 0) {
- select_interface(alt_ifc);
- }
- return TRUE;
-}
+ /* OUTPUT 0-7 */
+ EXTAUTODAT2 = samplerates[i].out0;
+ EXTAUTODAT2 = 0x44; /* OE2=1, CTL2=1 */
+ EXTAUTODAT2 = 0x44; /* OE2=1, CTL2=1 */
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
-// handle getting and setting the configuration
-// 1 is the default. We don't support multiple configurations.
-BYTE handle_get_configuration() {
- return 0;
-}
+ /* LOGIC FUNCTION 0-7 */
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+ EXTAUTODAT2 = 0;
+
+ for (i = 0; i < 96; i++)
+ EXTAUTODAT2 = 0;
-BOOL handle_set_configuration(BYTE cfg) {
- (void) cfg; // ignore unused parameter
- return TRUE;
+ return TRUE;
}
+/* Set *alt_ifc to the current alt interface for ifc. */
+BOOL handle_get_interface(BYTE ifc, BYTE *alt_ifc)
+{
+ (void)ifc;
+
+ *alt_ifc = altiface;
-//******************* VENDOR COMMAND HANDLERS **************************
-
-BOOL handle_vendorcommand(BYTE cmd) {
- stop_sampling();
- // Set Red LED
- PC0 = 0;
- PC1 = 1;
- ledcounter = 1000;
- switch (cmd) {
- case 0xe0:
- case 0xe1:
- EP0BCH=0;
- EP0BCL=0;
- while (EP0CS & bmEPBUSY);
- set_voltage(cmd - 0xe0, EP0BUF[0]);
- return TRUE;
- case 0xe2:
- EP0BCH=0;
- EP0BCL=0;
- while (EP0CS & bmEPBUSY);
- set_samplerate(EP0BUF[0]);
- return TRUE;
- case 0xe3:
- EP0BCH=0;
- EP0BCL=0;
- while (EP0CS & bmEPBUSY);
- if (EP0BUF[0] == 1)
- start_sampling();
- return TRUE;
- case 0xe4:
- EP0BCH=0;
- EP0BCL=0;
- while (EP0CS & bmEPBUSY);
- set_numchannels(EP0BUF[0]);
return TRUE;
- }
- return FALSE; // not handled by handlers
}
-//******************** INIT ***********************
+/*
+ * Return TRUE if you set the interface requested.
+ *
+ * Note: This function should reconfigure and reset the endpoints
+ * according to the interface descriptors you provided.
+ */
+BOOL handle_set_interface(BYTE ifc,BYTE alt_ifc)
+{
+ if (ifc == 0)
+ select_interface(alt_ifc);
-void main_init() {
- EP4CFG = 0;
- EP8CFG = 0;
+ return TRUE;
+}
- // in idle mode tristate all outputs
- GPIFIDLECTL = 0x00;
- GPIFCTLCFG = 0x80;
- GPIFWFSELECT = 0x00;
- GPIFREADYSTAT = 0x00;
+BYTE handle_get_configuration(void)
+{
+ /* We only support configuration 0. */
+ return 0;
+}
- stop_sampling();
- set_voltage(0, 1);
- set_voltage(1, 1);
- set_samplerate(1);
- set_numchannels(2);
- select_interface(0);
+BOOL handle_set_configuration(BYTE cfg)
+{
+ /* We only support configuration 0. */
+ (void)cfg;
- printf ( "Initialization Done.\n" );
+ return TRUE;
}
-
-void main_loop() {
+BOOL handle_vendorcommand(BYTE cmd)
+{
+ stop_sampling();
+
+ /* Set red LED. */
+ PC0 = 0;
+ PC1 = 1;
+ ledcounter = 1000;
+
+ /* Clear EP0BCH/L for each valid command. */
+ if (cmd >= 0xe0 && cmd <= 0xe4) {
+ EP0BCH = 0;
+ EP0BCL = 0;
+ while (EP0CS & bmEPBUSY);
+ }
+
+ switch (cmd) {
+ case 0xe0:
+ case 0xe1:
+ set_voltage(cmd - 0xe0, EP0BUF[0]);
+ return TRUE;
+ case 0xe2:
+ set_samplerate(EP0BUF[0]);
+ return TRUE;
+ case 0xe3:
+ if (EP0BUF[0] == 1)
+ start_sampling();
+ return TRUE;
+ case 0xe4:
+ set_numchannels(EP0BUF[0]);
+ return TRUE;
+ }
+
+ return FALSE; /* Not handled by handlers. */
}
+static void init(void)
+{
+ EP4CFG = 0;
+ EP8CFG = 0;
+
+ /* In idle mode tristate all outputs. */
+ GPIFIDLECTL = 0x00; /* Don't enable CTL0-5 outputs. */
+ GPIFCTLCFG = 0x80; /* TRICTL=1. CTL0-2: CMOS outputs, tri-statable. */
+ GPIFWFSELECT = 0x00;
+ GPIFREADYSTAT = 0x00;
+
+ stop_sampling();
+
+ set_voltage(0, 1);
+ set_voltage(1, 1);
+ set_samplerate(1);
+ set_numchannels(2);
+ select_interface(0);
+}
+static void main(void)
+{
+ /* Save energy. */
+ SETCPUFREQ(CLK_12M);
+
+ init();
+
+ /* Set up interrupts. */
+ USE_USB_INTS();
+
+ ENABLE_SUDAV();
+ ENABLE_USBRESET();
+ ENABLE_HISPEED();
+ ENABLE_SUSPEND();
+ ENABLE_RESUME();
+
+ /* Global (8051) interrupt enable. */
+ EA = 1;
+
+ /* Init timer2. */
+ RCAP2L = -500 & 0xff;
+ RCAP2H = (-500 & 0xff00) >> 8;
+ T2CON = 0;
+ ET2 = 1;
+ TR2 = 1;
+
+ RENUMERATE();
+
+ PORTCCFG = 0;
+ PORTACFG = 0;
+ OEC = 0xff;
+ OEA = 0x80;
+
+ while (TRUE) {
+ if (dosud) {
+ dosud = FALSE;
+ handle_setupdata();
+ }
+
+ if (dosuspend) {
+ dosuspend = FALSE;
+ do {
+ /* Make sure ext wakeups are cleared. */
+ WAKEUPCS |= bmWU|bmWU2;
+ SUSPEND = 1;
+ PCON |= 1;
+ __asm
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ __endasm;
+ } while (!remote_wakeup_allowed && REMOTE_WAKEUP());
+
+ /* Resume (TRM 6.4). */
+ if (REMOTE_WAKEUP()) {
+ delay(5);
+ USBCS |= bmSIGRESUME;
+ delay(15);
+ USBCS &= ~bmSIGRESUME;
+ }
+ }
+ }
+}