altos/stm32f4: Add start of stm32f413 USB support

This code doesn't work yet.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/src/stm32f4/ao_usb_gen.h b/src/stm32f4/ao_usb_gen.h
new file mode 100644
index 00000000..b059ddb7
--- /dev/null
+++ b/src/stm32f4/ao_usb_gen.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright © 2018 Keith Packard <keithp@keithp.com>
+ *
+ * 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.
+ */
+
+#ifndef _AO_USB_GEN_H_
+#define _AO_USB_GEN_H_
+
+#include "ao.h"
+#include "ao_usb.h"
+#include "ao_product.h"
+#include <stdint.h>
+
+#define USB_ECHO	0
+
+#ifndef USE_USB_STDIO
+#define USE_USB_STDIO	1
+#endif
+
+#if USE_USB_STDIO
+#define AO_USB_OUT_SLEEP_ADDR	(&ao_stdin_ready)
+#else
+#define AO_USB_OUT_SLEEP_ADDR	(&ao_usb_out_avail)
+#endif
+
+struct ao_usb_setup {
+	uint8_t		dir_type_recip;
+	uint8_t		request;
+	uint16_t	value;
+	uint16_t	index;
+	uint16_t	length;
+} ao_usb_setup;
+
+#define AO_USB_EP0_GOT_RESET	1
+#define AO_USB_EP0_GOT_SETUP	2
+#define AO_USB_EP0_GOT_RX_DATA	4
+#define AO_USB_EP0_GOT_TX_ACK	8
+
+/*
+ * End point register indices
+ */
+
+#define AO_USB_CONTROL_EPR	0
+#define AO_USB_INT_EPR		1
+#define AO_USB_OUT_EPR		2
+#define AO_USB_IN_EPR		3
+
+/* Device interfaces required */
+
+/* Queue IN bytes to EP0 */
+void
+ao_usb_dev_ep0_init(void);
+
+void
+ao_usb_dev_ep0_in(const void *data, uint16_t len);
+
+bool
+ao_usb_dev_ep0_in_busy(void);
+
+/* Receive OUT bytes from EP0 */
+uint16_t
+ao_usb_dev_ep0_out(void *data, uint16_t len);
+
+/* Set device address */
+void
+ao_usb_dev_set_address(uint8_t address);
+
+void
+ao_usb_dev_enable(void);
+
+void
+ao_usb_dev_disable(void);
+
+void
+ao_usb_dev_init(void);
+
+/* Queue IN bytes to EPn */
+void
+ao_usb_dev_ep_in(uint8_t ep, const void *data, uint16_t len);
+
+bool
+ao_usb_dev_ep_in_busy(uint8_t ep);
+
+/* Receive OUT bytes from EPn */
+uint16_t
+ao_usb_dev_ep_out(uint8_t ep, void *data, uint16_t len);
+
+
+/* General interfaces provided */
+
+void
+ao_usb_ep0_interrupt(uint8_t mask);
+
+void
+ao_usb_in_interrupt(uint32_t mask);
+
+void
+ao_usb_out_interrupt(uint32_t mask);
+
+#endif /* _AO_USB_GEN_H_ */
+