diff --git a/firmware/fadecandy.cpp b/firmware/fadecandy.cpp
index 17da6c9b269881cae778c70d4d03987aed5c903e..501fc95540b86238910331177aa005a68be92bf7 100644
--- a/firmware/fadecandy.cpp
+++ b/firmware/fadecandy.cpp
@@ -38,6 +38,9 @@ static OctoWS2811z leds(LEDS_PER_STRIP, ledBuffer, WS2811_800kHz);
// Residuals for temporal dithering
static int8_t residual[CHANNELS_TOTAL];
+// Reserved RAM area for signalling entry to bootloader
+extern uint32_t boot_token;
+
static inline uint32_t calculateInterpCoefficient()
{
@@ -443,12 +446,30 @@ static void updateDrawBuffer(unsigned interpCoefficient)
}
}
+void dfu_reboot()
+{
+ // Reboot to the Fadecandy Bootloader
+ boot_token = 0x74624346;
+
+ // Short delay to allow the host to receive the response to DFU_DETACH.
+ uint32_t deadline = millis() + 10;
+ while (millis() < deadline) {
+ watchdog_refresh();
+ }
+
+ // Detach from USB, and use the watchdog to time out a 10ms USB disconnect.
+ __disable_irq();
+ USB0_CONTROL = 0;
+ while (1);
+}
+
extern "C" int main()
{
pinMode(LED_BUILTIN, OUTPUT);
leds.begin();
- while (1) {
+ // Application main loop
+ while (usb_dfu_state == DFU_appIDLE) {
watchdog_refresh();
buffers.handleUSB();
@@ -460,4 +481,7 @@ extern "C" int main()
memset(residual, 0, sizeof residual);
}
}
+
+ // Reboot into DFU bootloader
+ dfu_reboot();
}
diff --git a/firmware/usb_desc.c b/firmware/usb_desc.c
index b8e0263c24de8f44822b44aa6114d1972d0f3760..a9aa22bd83cbab75de4747202b97680c90935236 100644
--- a/firmware/usb_desc.c
+++ b/firmware/usb_desc.c
@@ -132,6 +132,27 @@ static uint8_t config_descriptor[CONFIG_DESC_SIZE] = {
0, // bInterval
#endif // FC_INTERFACE
+#ifdef DFU_INTERFACE
+ // interface descriptor, DFU Mode (DFU spec Table 4.4)
+ 9, // bLength
+ 4, // bDescriptorType
+ DFU_INTERFACE, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 0, // bNumEndpoints
+ 0xFE, // bInterfaceClass
+ 0x01, // bInterfaceSubClass
+ 0x01, // bInterfaceProtocol (Runtime)
+ 4, // iInterface
+ // DFU Functional Descriptor (DFU spec TAble 4.2)
+ 9, // bLength
+ 0x21, // bDescriptorType
+ 0x0D, // bmAttributes
+ LSB(DFU_DETACH_TIMEOUT), // wDetachTimeOut
+ MSB(DFU_DETACH_TIMEOUT),
+ LSB(DFU_TRANSFER_SIZE), // wTransferSize
+ MSB(DFU_TRANSFER_SIZE),
+ 0x01,0x01, // bcdDFUVersion
+#endif // DFU_INTERFACE
};
@@ -174,6 +195,11 @@ struct usb_string_descriptor_struct usb_string_product_name_default = {
3,
PRODUCT_NAME
};
+struct usb_string_descriptor_struct usb_string_dfu_name = {
+ 2 + DFU_NAME_LEN * 2,
+ 3,
+ DFU_NAME
+};
// 32-digit hex string, corresponding to the MK20DX128's built-in unique 128-bit ID.
struct usb_string_descriptor_struct usb_string_serial_number_default = {
@@ -232,37 +258,11 @@ const usb_descriptor_list_t usb_descriptor_list[] = {
//wValue, wIndex, address, length
{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
{0x0200, 0x0000, config_descriptor, sizeof(config_descriptor)},
-#ifdef SEREMU_INTERFACE
- {0x2200, SEREMU_INTERFACE, seremu_report_desc, sizeof(seremu_report_desc)},
- {0x2100, SEREMU_INTERFACE, config_descriptor+SEREMU_DESC_OFFSET, 9},
-#endif
-#ifdef KEYBOARD_INTERFACE
- {0x2200, KEYBOARD_INTERFACE, keyboard_report_desc, sizeof(keyboard_report_desc)},
- {0x2100, KEYBOARD_INTERFACE, config_descriptor+KEYBOARD_DESC_OFFSET, 9},
-#endif
-#ifdef MOUSE_INTERFACE
- {0x2200, MOUSE_INTERFACE, mouse_report_desc, sizeof(mouse_report_desc)},
- {0x2100, MOUSE_INTERFACE, config_descriptor+MOUSE_DESC_OFFSET, 9},
-#endif
-#ifdef JOYSTICK_INTERFACE
- {0x2200, JOYSTICK_INTERFACE, joystick_report_desc, sizeof(joystick_report_desc)},
- {0x2100, JOYSTICK_INTERFACE, config_descriptor+JOYSTICK_DESC_OFFSET, 9},
-#endif
-#ifdef RAWHID_INTERFACE
- {0x2200, RAWHID_INTERFACE, rawhid_report_desc, sizeof(rawhid_report_desc)},
- {0x2100, RAWHID_INTERFACE, config_descriptor+RAWHID_DESC_OFFSET, 9},
-#endif
-#ifdef FLIGHTSIM_INTERFACE
- {0x2200, FLIGHTSIM_INTERFACE, flightsim_report_desc, sizeof(flightsim_report_desc)},
- {0x2100, FLIGHTSIM_INTERFACE, config_descriptor+FLIGHTSIM_DESC_OFFSET, 9},
-#endif
{0x0300, 0x0000, (const uint8_t *)&string0, 0},
{0x0301, 0x0409, (const uint8_t *)&usb_string_manufacturer_name, 0},
{0x0302, 0x0409, (const uint8_t *)&usb_string_product_name, 0},
{0x0303, 0x0409, (const uint8_t *)&usb_string_serial_number, 0},
- //{0x0301, 0x0409, (const uint8_t *)&string1, 0},
- //{0x0302, 0x0409, (const uint8_t *)&string2, 0},
- //{0x0303, 0x0409, (const uint8_t *)&string3, 0},
+ {0x0304, 0x0409, (const uint8_t *)&usb_string_dfu_name, 0},
{0, 0, NULL, 0}
};
@@ -271,20 +271,6 @@ const usb_descriptor_list_t usb_descriptor_list[] = {
// Endpoint Configuration
// **************************************************************
-#if 0
-// 0x00 = not used
-// 0x19 = Recieve only
-// 0x15 = Transmit only
-// 0x1D = Transmit & Recieve
-//
-const uint8_t usb_endpoint_config_table[NUM_ENDPOINTS] =
-{
- 0x00, 0x15, 0x19, 0x15, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-};
-#endif
-
-
const uint8_t usb_endpoint_config_table[NUM_ENDPOINTS] =
{
#if (defined(ENDPOINT1_CONFIG) && NUM_ENDPOINTS >= 1)
diff --git a/firmware/usb_desc.h b/firmware/usb_desc.h
index bc2231fa014f0f35c58e2cf08b108fd606ba6b6b..81efa8de33e6c089991c4d7e57ba765747f46c69 100644
--- a/firmware/usb_desc.h
+++ b/firmware/usb_desc.h
@@ -82,19 +82,24 @@ let me know? http://forum.pjrc.com/forums/4-Suggestions-amp-Bug-Reports
*/
#define USB_FADECANDY
- #define DEVICE_VER 0x0101
+ #define DEVICE_VER 0x0102
#define DEVICE_CLASS 0xff // Vendor specific
#define MANUFACTURER_NAME {'s','c','a','n','l','i','m','e'}
#define MANUFACTURER_NAME_LEN 8
#define PRODUCT_NAME {'F','a','d','e','c','a','n','d','y'}
#define PRODUCT_NAME_LEN 9
+ #define DFU_NAME {'F','a','d','e','c','a','n','d','y',' ','B','o','o','t','l','o','a','d','e','r'}
+ #define DFU_NAME_LEN 20
#define EP0_SIZE 64
#define NUM_ENDPOINTS 1
- #define NUM_INTERFACE 1
+ #define NUM_INTERFACE 2
#define FC_INTERFACE 0
#define FC_OUT_ENDPOINT 1
#define FC_OUT_SIZE 64
- #define CONFIG_DESC_SIZE (9+9+7)
+ #define DFU_INTERFACE 1
+ #define DFU_DETACH_TIMEOUT 10000 // 10 seconds
+ #define DFU_TRANSFER_SIZE 1024 // Flash sector size
+ #define CONFIG_DESC_SIZE (9+9+7+9+9)
#define ENDPOINT1_CONFIG ENDPOINT_RECEIVE_ONLY
// NUM_ENDPOINTS = number of non-zero endpoints (0 to 15)
diff --git a/firmware/usb_dev.c b/firmware/usb_dev.c
index 84676dfa2283930fa7c1c9fc506eca5c5fdc757e..3a67abc9fd6441d2f5988eb13fb520a8b20b4854 100644
--- a/firmware/usb_dev.c
+++ b/firmware/usb_dev.c
@@ -1,4 +1,8 @@
-/* Teensyduino Core Library
+/*
+ * Fadecandy firmware
+ * Copyright (c) 2013 Micah Elizabeth Scott
+ *
+ * Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
*
@@ -123,7 +127,7 @@ static uint8_t ep0_tx_data_toggle = 0;
uint8_t usb_rx_memory_needed = 0;
volatile uint8_t usb_configuration = 0;
-
+volatile uint8_t usb_dfu_state = DFU_appIDLE;
static void endpoint0_stall(void)
{
@@ -284,6 +288,39 @@ static void usb_setup(void)
endpoint0_stall();
return;
+ case 0x03a1: // DFU_GETSTATUS
+ if (setup.wIndex != DFU_INTERFACE) {
+ endpoint0_stall();
+ return;
+ }
+ reply_buffer[0] = 0; // bStatus = OK
+ reply_buffer[1] = 1; // bwPollTimeout LSB = 1
+ reply_buffer[2] = 0; // bwPollTimeout
+ reply_buffer[3] = 0; // bwPollTimeout
+ reply_buffer[4] = usb_dfu_state;
+ reply_buffer[5] = 0; // iString = 0
+ data = reply_buffer;
+ datalen = 6;
+ break;
+
+ case 0x05a1: // DFU_GETSTATE
+ if (setup.wIndex != DFU_INTERFACE) {
+ endpoint0_stall();
+ return;
+ }
+ reply_buffer[0] = usb_dfu_state;
+ data = reply_buffer;
+ datalen = 1;
+ break;
+
+ case 0x0021: // DFU_DETACH
+ if (setup.wIndex != DFU_INTERFACE) {
+ endpoint0_stall();
+ return;
+ }
+ usb_dfu_state = DFU_appDETACH;
+ break;
+
default:
endpoint0_stall();
return;
diff --git a/firmware/usb_dev.h b/firmware/usb_dev.h
index 5122504367fc7460508e7d73f57f14f0c971af70..e22c2f9c4e6e841fa8ff5065b47c2cd3b46a752f 100644
--- a/firmware/usb_dev.h
+++ b/firmware/usb_dev.h
@@ -53,6 +53,11 @@ void usb_tx(uint32_t endpoint, usb_packet_t *packet);
void usb_tx_isr(uint32_t endpoint, usb_packet_t *packet);
extern volatile uint8_t usb_configuration;
+extern volatile uint8_t usb_dfu_state;
+
+// DFU states
+#define DFU_appIDLE 0
+#define DFU_appDETACH 1
extern uint16_t usb_rx_byte_count_data[NUM_ENDPOINTS];
static inline uint32_t usb_rx_byte_count(uint32_t endpoint) __attribute__((always_inline));