struct ao_task __xdata ao_usb_task;
-#define AO_USB_CONTROL_EP 0
-#define AO_USB_INT_EP 1
-#define AO_USB_OUT_EP 4
-#define AO_USB_IN_EP 5
-#define AO_USB_CONTROL_SIZE 32
-/*
- * Double buffer IN and OUT EPs, so each
- * gets half of the available space
- */
-#define AO_USB_IN_SIZE 256
-#define AO_USB_OUT_SIZE 128
-
static __xdata uint16_t ao_usb_in_bytes;
static __xdata uint16_t ao_usb_out_bytes;
static __xdata uint8_t ao_usb_iif;
-static __xdata uint8_t ao_usb_oif;
+static __xdata uint8_t ao_usb_running;
+
+static void
+ao_usb_set_interrupts(void)
+{
+ /* IN interrupts on the control an IN endpoints */
+ USBIIE = (1 << AO_USB_CONTROL_EP) | (1 << AO_USB_IN_EP);
+
+ /* OUT interrupts on the OUT endpoint */
+ USBOIE = (1 << AO_USB_OUT_EP);
+
+ /* Only care about reset */
+ USBCIE = USBCIE_RSTIE;
+}
/* This interrupt is shared with port 2,
* so when we hook that up, fix this
if (ao_usb_iif & (1 << AO_USB_IN_EP))
ao_wakeup(&ao_usb_in_bytes);
- ao_usb_oif |= USBOIF;
- if (ao_usb_oif & (1 << AO_USB_OUT_EP))
+ if (USBOIF & (1 << AO_USB_OUT_EP))
ao_wakeup(&ao_usb_out_bytes);
-}
-#define AO_USB_EP0_IDLE 0
-#define AO_USB_EP0_DATA_IN 1
-#define AO_USB_EP0_DATA_OUT 2
+ if (USBCIF & USBCIF_RSTIF)
+ ao_usb_set_interrupts();
+}
struct ao_usb_setup {
uint8_t dir_type_recip;
USBCS0 = cs0;
}
-#define LE_WORD(x) ((x)&0xFF),((x)>>8)
-
-/* CDC definitions */
-#define CS_INTERFACE 0x24
-#define CS_ENDPOINT 0x25
-
-#define SET_LINE_CODING 0x20
-#define GET_LINE_CODING 0x21
-#define SET_CONTROL_LINE_STATE 0x22
-
-/* Data structure for GET_LINE_CODING / SET_LINE_CODING class requests */
-struct ao_usb_line_coding {
- uint32_t rate;
- uint8_t char_format;
- uint8_t parity;
- uint8_t data_bits;
-} ;
-
__xdata static struct ao_usb_line_coding ao_usb_line_coding = {115200, 0, 0, 8};
-/* USB descriptors in one giant block of bytes */
-static const uint8_t ao_usb_descriptors [] =
-{
- /* Device descriptor */
- 0x12,
- AO_USB_DESC_DEVICE,
- LE_WORD(0x0110), /* bcdUSB */
- 0x02, /* bDeviceClass */
- 0x00, /* bDeviceSubClass */
- 0x00, /* bDeviceProtocol */
- AO_USB_CONTROL_SIZE, /* bMaxPacketSize */
- LE_WORD(0xFFFE), /* idVendor */
- LE_WORD(0x000A), /* idProduct */
- LE_WORD(0x0100), /* bcdDevice */
- 0x01, /* iManufacturer */
- 0x02, /* iProduct */
- 0x03, /* iSerialNumber */
- 0x01, /* bNumConfigurations */
-
- /* Configuration descriptor */
- 0x09,
- AO_USB_DESC_CONFIGURATION,
- LE_WORD(67), /* wTotalLength */
- 0x02, /* bNumInterfaces */
- 0x01, /* bConfigurationValue */
- 0x00, /* iConfiguration */
- 0xC0, /* bmAttributes */
- 0x32, /* bMaxPower */
-
- /* Control class interface */
- 0x09,
- AO_USB_DESC_INTERFACE,
- 0x00, /* bInterfaceNumber */
- 0x00, /* bAlternateSetting */
- 0x01, /* bNumEndPoints */
- 0x02, /* bInterfaceClass */
- 0x02, /* bInterfaceSubClass */
- 0x01, /* bInterfaceProtocol, linux requires value of 1 for the cdc_acm module */
- 0x00, /* iInterface */
-
- /* Header functional descriptor */
- 0x05,
- CS_INTERFACE,
- 0x00, /* bDescriptor SubType Header */
- LE_WORD(0x0110), /* CDC version 1.1 */
-
- /* Call management functional descriptor */
- 0x05,
- CS_INTERFACE,
- 0x01, /* bDescriptor SubType Call Management */
- 0x01, /* bmCapabilities = device handles call management */
- 0x01, /* bDataInterface call management interface number */
-
- /* ACM functional descriptor */
- 0x04,
- CS_INTERFACE,
- 0x02, /* bDescriptor SubType Abstract Control Management */
- 0x02, /* bmCapabilities = D1 (Set_line_Coding, Set_Control_Line_State, Get_Line_Coding and Serial_State) */
-
- /* Union functional descriptor */
- 0x05,
- CS_INTERFACE,
- 0x06, /* bDescriptor SubType Union Functional descriptor */
- 0x00, /* bMasterInterface */
- 0x01, /* bSlaveInterface0 */
-
- /* Notification EP */
- 0x07,
- AO_USB_DESC_ENDPOINT,
- AO_USB_INT_EP|0x80, /* bEndpointAddress */
- 0x03, /* bmAttributes = intr */
- LE_WORD(8), /* wMaxPacketSize */
- 0x0A, /* bInterval */
-
- /* Data class interface descriptor */
- 0x09,
- AO_USB_DESC_INTERFACE,
- 0x01, /* bInterfaceNumber */
- 0x00, /* bAlternateSetting */
- 0x02, /* bNumEndPoints */
- 0x0A, /* bInterfaceClass = data */
- 0x00, /* bInterfaceSubClass */
- 0x00, /* bInterfaceProtocol */
- 0x00, /* iInterface */
-
- /* Data EP OUT */
- 0x07,
- AO_USB_DESC_ENDPOINT,
- AO_USB_OUT_EP, /* bEndpointAddress */
- 0x02, /* bmAttributes = bulk */
- LE_WORD(AO_USB_OUT_SIZE),/* wMaxPacketSize */
- 0x00, /* bInterval */
-
- /* Data EP in */
- 0x07,
- AO_USB_DESC_ENDPOINT,
- AO_USB_IN_EP|0x80, /* bEndpointAddress */
- 0x02, /* bmAttributes = bulk */
- LE_WORD(AO_USB_IN_SIZE),/* wMaxPacketSize */
- 0x00, /* bInterval */
-
- /* String descriptors */
- 0x04,
- AO_USB_DESC_STRING,
- LE_WORD(0x0409),
-
- /* iManufacturer */
- 0x20,
- AO_USB_DESC_STRING,
- 'a', 0, 'l', 0, 't', 0, 'u', 0, 's', 0, 'm', 0, 'e', 0, 't', 0, 'r', 0, 'u', 0, 'm', 0, '.', 0, 'o', 0, 'r', 0, 'g', 0,
-
- /* iProduct */
- 0x16,
- AO_USB_DESC_STRING,
- 'T', 0, 'e', 0, 'l', 0, 'e', 0, 'M', 0, 'e', 0, 't', 0, 'r', 0, 'u', 0, 'm', 0,
-
- /* iSerial */
- 0x0e,
- AO_USB_DESC_STRING,
- '0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '0', 0,
-
- /* Terminating zero */
- 0
-};
-
/* Walk through the list of descriptors and find a match
*/
static void
void
ao_usb_set_address(uint8_t address)
{
+ ao_usb_running = 1;
USBADDR = address | 0x80;
while (USBADDR & 0x80)
;
}
break;
case AO_USB_RECIP_INTERFACE:
+ #pragma disable_warning 110
switch(ao_usb_setup.request) {
case AO_USB_REQ_GET_STATUS:
ao_usb_ep0_queue_byte(0);
}
void
-ao_usb_putchar(uint8_t c) __critical
+ao_usb_putchar(char c) __critical
{
+ if (!ao_usb_running)
+ return;
for (;;) {
USBINDEX = AO_USB_IN_EP;
if ((USBCSIL & USBCSIL_INPKT_RDY) == 0)
}
}
-uint8_t
+char
ao_usb_getchar(void) __critical
{
- __xdata uint8_t c;
+ __xdata char c;
while (ao_usb_out_bytes == 0) {
for (;;) {
USBINDEX = AO_USB_OUT_EP;
}
void
-ao_usb_init(void)
+ao_usb_enable(void)
{
/* Turn on the USB controller */
SLEEP |= SLEEP_USB_EN;
ao_usb_set_configuration();
- /* IN interrupts on the control an IN endpoints */
- USBIIE = (1 << AO_USB_CONTROL_EP) | (1 << AO_USB_IN_EP);
-
- /* OUT interrupts on the OUT endpoint */
- USBOIE = (1 << AO_USB_OUT_EP);
+ ao_usb_set_interrupts();
- /* Ignore control interrupts */
- USBCIE = 0;
-
/* enable USB interrupts */
IEN2 |= IEN2_USBIE;
USBCIF = 0;
USBOIF = 0;
USBIIF = 0;
+}
+
+void
+ao_usb_disable(void)
+{
+ /* Disable USB interrupts */
+ USBIIE = 0;
+ USBOIE = 0;
+ USBCIE = 0;
+ IEN2 &= ~IEN2_USBIE;
+ /* Clear any pending interrupts */
+ USBCIF = 0;
+ USBOIF = 0;
+ USBIIF = 0;
+
+ /* Turn off the USB controller */
+ SLEEP &= ~SLEEP_USB_EN;
+}
+
+void
+ao_usb_init(void)
+{
+ ao_usb_enable();
+
ao_add_task(&ao_usb_task, ao_usb_ep0, "usb");
}
projects / fw / altos / blobdiff