From: Uwe Hermann Date: Mon, 24 Apr 2017 09:34:18 +0000 (+0200) Subject: scopes: Add include/scope.inc. X-Git-Tag: sigrok-firmware-fx2lafw-0.1.6~17 X-Git-Url: http://sigrok.org/gitweb/?p=sigrok-firmware-fx2lafw.git;a=commitdiff_plain;h=b48a78c1beb65f7ea2e3ae8bfe33859ead122d86 scopes: Add include/scope.inc. This is a copy of hantek_6022be.c, with device-specific code removed. This includes some #defines at the top of the file, samplerates[], and set_voltage(). --- diff --git a/include/scope.inc b/include/scope.inc new file mode 100644 index 00000000..0145b2b6 --- /dev/null +++ b/include/scope.inc @@ -0,0 +1,457 @@ +/* + * 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 + * 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, see . + */ + +#define OE_CTL (((1 << CTL_BIT) << 4) | (1 << CTL_BIT)) /* OEx = CTLx = 1 */ + +static BOOL set_voltage(BYTE channel, BYTE val); + +struct samplerate_info { + BYTE rate; + BYTE wait0; + BYTE wait1; + BYTE opc0; + BYTE opc1; + BYTE out0; + BYTE ifcfg; +}; + +/* Change to support as many interfaces as you need. */ +static BYTE altiface = 0; + +static volatile WORD ledcounter = 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(); +} + +void sudav_isr(void) __interrupt SUDAV_ISR +{ + dosud = TRUE; + CLEAR_SUDAV(); +} + +void usbreset_isr(void) __interrupt USBRESET_ISR +{ + handle_hispeed(FALSE); + CLEAR_USBRESET(); +} + +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 +{ + TOGGLE_CALIBRATION_PIN(); + + if (ledcounter && (--ledcounter == 0)) + LED_CLEAR(); + + TF2 = 0; +} + +/** + * Each LSB in the nibble of the byte controls the coupling per channel. + * + * Setting PE3 disables AC coupling capacitor on CH0. + * Setting PE0 disables AC coupling capacitor on CH1. + */ +static void set_coupling(BYTE coupling_cfg) +{ + if (coupling_cfg & 0x01) + IOE |= 0x08; + else + IOE &= ~0x08; + + if (coupling_cfg & 0x10) + IOE |= 0x01; + else + IOE &= ~0x01; +} + +static BOOL set_numchannels(BYTE numchannels) +{ + if (numchannels == 1 || numchannels == 2) { + BYTE fifocfg = 7 + numchannels; + EP2FIFOCFG = fifocfg; + EP6FIFOCFG = fifocfg; + return TRUE; + } + + return FALSE; +} + +static void clear_fifo(void) +{ + GPIFABORT = 0xff; + SYNCDELAY3; + FIFORESET = 0x80; + SYNCDELAY3; + FIFORESET = 0x82; + SYNCDELAY3; + FIFORESET = 0x86; + SYNCDELAY3; + FIFORESET = 0; +} + +static void stop_sampling(void) +{ + GPIFABORT = 0xff; + SYNCDELAY3; + INPKTEND = (altiface == 0) ? 6 : 2; +} + +static void start_sampling(void) +{ + int i; + + SET_ANALOG_MODE(); + + 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 afterwards (ledcounter = 0). */ + LED_GREEN(); + ledcounter = 0; +} + +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 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; + } +} + +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; /* 0xE400: GPIF waveform descriptor 0. */ + AUTOPTRL2 = 0x00; + + /* + * The program for low-speed, e.g. 1 MHz, is: + * wait 24, CTLx=0, FIFO + * wait 23, CTLx=1 + * jump 0, CTLx=1 + * + * The program for 24 MHz is: + * wait 1, CTLx=0, FIFO + * jump 0, CTLx=1 + * + * The program for 30/48 MHz is: + * jump 0, CTLx=Z, FIFO, LOOP + * + * (CTLx is device-dependent, could be e.g. CTL0 or CTL2.) + */ + + /* LENGTH / BRANCH 0-7 */ + EXTAUTODAT2 = samplerates[i].wait0; + EXTAUTODAT2 = samplerates[i].wait1; + EXTAUTODAT2 = 1; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + + /* 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; + + /* OUTPUT 0-7 */ + EXTAUTODAT2 = samplerates[i].out0; + EXTAUTODAT2 = OE_CTL; + EXTAUTODAT2 = OE_CTL; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 0; + EXTAUTODAT2 = 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; + + return TRUE; +} + +static BOOL set_calibration_pulse(BYTE fs) +{ + switch (fs) { + case 0: // 100Hz + RCAP2L = -10000 & 0xff; + RCAP2H = (-10000 & 0xff00) >> 8; + return TRUE; + case 1: // 1kHz + RCAP2L = -1000 & 0xff; + RCAP2H = (-1000 & 0xff00) >> 8; + return TRUE; + case 10: // 1kHz + RCAP2L = (BYTE)(-100 & 0xff); + RCAP2H = 0xff; + return TRUE; + case 50: // 50kHz + RCAP2L = (BYTE)(-20 & 0xff); + RCAP2H = 0xff; + return TRUE; + default: + return FALSE; + } +} + +/* Set *alt_ifc to the current alt interface for ifc. */ +BOOL handle_get_interface(BYTE ifc, BYTE *alt_ifc) +{ + (void)ifc; + + *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) +{ + if (ifc == 0) + select_interface(alt_ifc); + + return TRUE; +} + +BYTE handle_get_configuration(void) +{ + /* We only support configuration 0. */ + return 0; +} + +BOOL handle_set_configuration(BYTE cfg) +{ + /* We only support configuration 0. */ + (void)cfg; + + return TRUE; +} + +BOOL handle_vendorcommand(BYTE cmd) +{ + stop_sampling(); + + /* Set red LED, clear after timeout. */ + LED_RED(); + ledcounter = 1000; + + /* Clear EP0BCH/L for each valid command. */ + if (cmd >= 0xe0 && cmd <= 0xe6) { + 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; + case 0xe5: + SET_COUPLING(EP0BUF[0]); + return TRUE; + case 0xe6: + SET_CALIBRATION_PULSE(EP0BUF[0]); + return TRUE; + } + + return FALSE; /* Not handled by handlers. */ +} + +static void init(void) +{ + EP4CFG = 0; + EP8CFG = 0; + + SET_ANALOG_MODE(); + + /* 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 = -TIMER2_VAL & 0xff; + RCAP2H = (-TIMER2_VAL & 0xff00) >> 8; + T2CON = 0; + ET2 = 1; + TR2 = 1; + + RENUMERATE_UNCOND(); + + PORTECFG = 0; + PORTCCFG = 0; + PORTACFG = 0; + OEE = 0xff; + OEC = 0xff; + OEA = 0xff; + + 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; + } + } + } +}