X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hw%2Fhantek-pso2020%2Ffw.c;fp=hw%2Fhantek-pso2020%2Ffw.c;h=fb98363428250bd41bf0de6cfec9ff2ae4df3382;hb=0f2d3242ffb5582e5b9a018ed9ae9812d517a56e;hp=0000000000000000000000000000000000000000;hpb=bb3c6dfdb3f95bf529ed95dcc5fb3610e4473673;p=sigrok-firmware-fx2lafw.git

diff --git a/hw/hantek-pso2020/fw.c b/hw/hantek-pso2020/fw.c
new file mode 100644
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--- /dev/null
+++ b/hw/hantek-pso2020/fw.c
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+/*
+ * This file is part of the sigrok-firmware-fx2lafw project.
+ *
+ * Copyright (C) 2009 Ubixum, Inc.
+ * Copyright (C) 2015 Jochen Hoenicke
+ * Copyright (C) 2024 Steve Markgraf
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <fx2macros.h>
+#include <fx2ints.h>
+#include <autovector.h>
+#include <delay.h>
+#include <setupdat.h>
+
+#define SET_ANALOG_MODE()
+
+#define SET_COUPLING(x) set_coupling_pso2020(x)
+
+#define SET_CALIBRATION_PULSE(x)
+
+#define TOGGLE_CALIBRATION_PIN()
+
+#define LED_CLEAR() do { PA6 = 1; IOE |= (1 << 2); IOE &= ~(1 << 1); } while (0)
+#define LED_GREEN() do { PA6 = 0; IOE |= (1 << 2); } while (0)
+#define LED_RED()   do { PA6 = 1; IOE &= ~(1 << 2); } while (0)
+#define LED_WHITE() do { IOE |= (1 << 1); } while (0)
+
+#define MUX_S0 (1 << 2)
+#define MUX_S1 (1 << 1)
+
+#define TIMER2_VAL 500
+
+/* CTLx pin index (IFCLK, ADC clock input). */
+#define CTL_BIT 0
+
+#define OUT0 ((1 << CTL_BIT) << 4) /* OEx = 1, CTLx = 0 */
+
+static const struct samplerate_info samplerates[] = {
+	{ 48, 0x80,   0, 3, 0, 0x00, 0xea },
+	{ 30, 0x80,   0, 3, 0, 0x00, 0xaa },
+	{ 24,    1,   0, 2, 1, OUT0, 0xca },
+	{ 16,    1,   1, 2, 0, OUT0, 0xca },
+	{ 12,    2,   1, 2, 0, OUT0, 0xca },
+	{  8,    3,   2, 2, 0, OUT0, 0xca },
+	{  4,    6,   5, 2, 0, OUT0, 0xca },
+	{  2,   12,  11, 2, 0, OUT0, 0xca },
+	{  1,   24,  23, 2, 0, OUT0, 0xca },
+	{ 50,   48,  47, 2, 0, OUT0, 0xca },
+	{ 20,  120, 119, 2, 0, OUT0, 0xca },
+	{ 10,  240, 239, 2, 0, OUT0, 0xca },
+};
+
+/**
+ * Control analog mux and relays to switch voltage ranges
+ */
+static BOOL set_voltage(BYTE channel, BYTE val)
+{
+	BYTE bits = 0;
+	BYTE mask = MUX_S0 | MUX_S1;
+
+	/* ADC channel B is only used for interleaved sampling
+	 * to get 96 MHz sampling rate, so it shares the
+	 * analog input circuitry with channel A
+	 * Instead of returning an error, silently ignore it */
+	if (channel > 0)
+		return TRUE;
+
+	switch (val) {
+	case 1:
+		/* 10 and 20V */
+		bits = MUX_S1;
+		break;
+	case 2:
+		/* 5V */
+		bits = MUX_S0;
+		break;
+	case 5:
+		/* 2V */
+		break;
+	case 10:
+		/* 1V */
+		bits = MUX_S0 | MUX_S1;
+		break;
+	case 11:
+		/* 500 mV */
+		bits = MUX_S1;
+		break;
+	case 12:
+		/* 200mV */
+		bits = MUX_S0;
+		break;
+	case 13:
+		/* 100mV */
+		break;
+	case 14:
+		/* 20 and 50mV in original software */
+		bits = MUX_S0 | MUX_S1;
+		break;
+	default:
+		return FALSE;
+	}
+
+	/* Switch relay for high voltage range */
+	if (val <= 10)
+		PA7 = 1;
+	else
+		PA7 = 0;
+
+	IOC = (IOC & ~mask) | (bits & mask);
+
+	return TRUE;
+}
+
+/**
+ * Switch between AC and DC coupling
+ */
+static void set_coupling_pso2020(BYTE coupling_cfg)
+{
+	if (coupling_cfg & 0x01)
+		PC4 = 0;
+	else
+		PC4 = 1;
+}
+
+#include <scope.inc>