Initial commit of files

SoftwareDefined/HackRF/hackrf-2015.07.2/firmware/hackrf_usb/usb_api_cpld.c

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+/*
+ * Copyright 2012 Jared Boone
+ * Copyright 2013 Benjamin Vernoux
+ *
+ * This file is part of HackRF.
+ *
+ * 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, 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "usb_api_cpld.h"
+
+#include <libopencm3/lpc43xx/gpio.h>
+
+#include <hackrf_core.h>
+#include <cpld_jtag.h>
+#include <usb_queue.h>
+
+#include "usb_endpoint.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+volatile bool start_cpld_update = false;
+uint8_t cpld_xsvf_buffer[512];
+volatile bool cpld_wait = false;
+
+static void cpld_buffer_refilled(void* user_data, unsigned int length)
+{
+	(void)user_data;
+	(void)length;
+	cpld_wait = false;
+}
+
+static void refill_cpld_buffer(void)
+{
+	cpld_wait = true;
+	usb_transfer_schedule(
+		&usb_endpoint_bulk_out,
+		cpld_xsvf_buffer,
+		sizeof(cpld_xsvf_buffer),
+		cpld_buffer_refilled,
+		NULL
+		);
+
+	// Wait until transfer finishes
+	while (cpld_wait);
+}
+
+void cpld_update(void)
+{
+	#define WAIT_LOOP_DELAY (6000000)
+	#define ALL_LEDS  (PIN_LED1|PIN_LED2|PIN_LED3)
+	int i;
+	int error;
+
+	usb_queue_flush_endpoint(&usb_endpoint_bulk_in);
+	usb_queue_flush_endpoint(&usb_endpoint_bulk_out);
+
+	refill_cpld_buffer();
+
+	error = cpld_jtag_program(sizeof(cpld_xsvf_buffer),
+				  cpld_xsvf_buffer,
+				  refill_cpld_buffer);
+	if(error == 0)
+	{
+		/* blink LED1, LED2, and LED3 on success */
+		while (1)
+		{
+			gpio_set(PORT_LED1_3, ALL_LEDS); /* LEDs on */
+			for (i = 0; i < WAIT_LOOP_DELAY; i++)  /* Wait a bit. */
+				__asm__("nop");
+			gpio_clear(PORT_LED1_3, ALL_LEDS); /* LEDs off */
+			for (i = 0; i < WAIT_LOOP_DELAY; i++)  /* Wait a bit. */
+				__asm__("nop");
+		}
+	}else
+	{
+		/* LED3 (Red) steady on error */
+		gpio_set(PORT_LED1_3, PIN_LED3); /* LEDs on */
+		while (1);
+	}
+}