#define AO_USB_IN_SIZE 256
#define AO_USB_OUT_SIZE 128
-static uint16_t ao_usb_in_bytes;
-static uint16_t ao_usb_out_bytes;
-static __data uint8_t ao_usb_iif;
-static __data uint8_t ao_usb_oif;
+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;
/* This interrupt is shared with port 2,
* so when we hook that up, fix this
uint16_t value;
uint16_t index;
uint16_t length;
-} ao_usb_setup;
+} __xdata ao_usb_setup;
-__data uint8_t ao_usb_ep0_state;
-uint8_t * __data ao_usb_ep0_in_data;
-__data uint8_t ao_usb_ep0_in_len;
+__xdata uint8_t ao_usb_ep0_state;
+uint8_t * __xdata ao_usb_ep0_in_data;
+__xdata uint8_t ao_usb_ep0_in_len;
__xdata uint8_t ao_usb_ep0_in_buf[2];
-__data uint8_t ao_usb_ep0_out_len;
+__xdata uint8_t ao_usb_ep0_out_len;
__xdata uint8_t *__data ao_usb_ep0_out_data;
-__data uint8_t ao_usb_configuration;
+__xdata uint8_t ao_usb_configuration;
/* Send an IN data packet */
static void
ao_usb_ep0_flush(void)
{
- uint8_t this_len;
- uint8_t cs0;
+ __xdata uint8_t this_len;
+ __xdata uint8_t cs0;
USBINDEX = 0;
cs0 = USBCS0;
USBCS0 = cs0;
}
-#define LE_WORD(x) ((x)&0xFF),((x)>>8)
+#define LE_WORD(x) ((x)&0xFF),((uint8_t) (((uint16_t) (x))>>8))
/* CDC definitions */
#define CS_INTERFACE 0x24
uint8_t data_bits;
} ;
-static struct ao_usb_line_coding ao_usb_line_coding = {115200, 0, 0, 8};
+__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 [] =
/* iSerial */
0x0e,
AO_USB_DESC_STRING,
- 't', 0, 'e', 0, 'l', 0, 'e', 0, '-', 0, '0', 0,
+ '0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '0', 0,
/* Terminating zero */
0
static void
ao_usb_get_descriptor(uint16_t value)
{
- const uint8_t *descriptor;
- uint8_t type = value >> 8;
- uint8_t index = value;
+ const uint8_t *__xdata descriptor;
+ __xdata uint8_t type = value >> 8;
+ __xdata uint8_t index = value;
descriptor = ao_usb_descriptors;
while (descriptor[0] != 0) {
static void
ao_usb_ep0_fill(void)
{
- uint8_t len;
+ __xdata uint8_t len;
USBINDEX = 0;
len = USBCNT0;
static void
ao_usb_set_configuration(void)
{
- uint8_t size;
-
/* Set the IN max packet size, double buffered */
USBINDEX = AO_USB_IN_EP;
- size = AO_USB_IN_SIZE >> 3;
- USBMAXI = size;
-// USBCSIH |= USBCSIH_IN_DBL_BUF;
+ USBMAXI = AO_USB_IN_SIZE >> 3;
+ USBCSIH |= USBCSIH_IN_DBL_BUF;
/* Set the OUT max packet size, double buffered */
USBINDEX = AO_USB_OUT_EP;
- size = AO_USB_OUT_SIZE >> 3;
- USBMAXO = size;
-// USBCSOH = USBCSOH_OUT_DBL_BUF;
+ USBMAXO = AO_USB_OUT_SIZE >> 3;
+ USBCSOH = USBCSOH_OUT_DBL_BUF;
}
static void
}
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);
static void
ao_usb_ep0(void)
{
- uint8_t cs0;
+ __xdata uint8_t cs0;
ao_usb_ep0_state = AO_USB_EP0_IDLE;
for (;;) {
- ao_interrupt_disable();
- for (;;) {
+ __critical for (;;) {
if (ao_usb_iif & 1) {
ao_usb_iif &= ~1;
break;
}
ao_sleep(&ao_usb_task);
}
- ao_interrupt_enable();
USBINDEX = 0;
cs0 = USBCS0;
if (cs0 & USBCS0_SETUP_END) {
}
void
-ao_usb_flush(void)
+ao_usb_flush(void) __critical
{
- ao_interrupt_disable();
if (ao_usb_in_bytes) {
USBINDEX = AO_USB_IN_EP;
USBCSIL |= USBCSIL_INPKT_RDY;
ao_usb_in_bytes = 0;
}
- ao_interrupt_enable();
}
void
-ao_usb_putchar(uint8_t c)
+ao_usb_putchar(uint8_t c) __critical
{
- ao_interrupt_disable();
for (;;) {
USBINDEX = AO_USB_IN_EP;
if ((USBCSIL & USBCSIL_INPKT_RDY) == 0)
ao_sleep(&ao_usb_in_bytes);
}
USBFIFO[AO_USB_IN_EP << 1] = c;
- if (++ao_usb_in_bytes == AO_USB_IN_SIZE)
- ao_usb_flush();
- ao_interrupt_enable();
+ if (++ao_usb_in_bytes == AO_USB_IN_SIZE) {
+ USBINDEX = AO_USB_IN_EP;
+ USBCSIL |= USBCSIL_INPKT_RDY;
+ ao_usb_in_bytes = 0;
+ }
}
uint8_t
-ao_usb_getchar(void)
+ao_usb_getchar(void) __critical
{
- uint8_t c;
- ao_interrupt_disable();
+ __xdata uint8_t c;
while (ao_usb_out_bytes == 0) {
for (;;) {
USBINDEX = AO_USB_OUT_EP;
USBINDEX = AO_USB_OUT_EP;
USBCSOL &= ~USBCSOL_OUTPKT_RDY;
}
- ao_interrupt_enable();
return c;
}
void
-ao_usb_init(void)
+ao_usb_enable(void)
{
/* Turn on the USB controller */
SLEEP |= SLEEP_USB_EN;
USBCIF = 0;
USBOIF = 0;
USBIIF = 0;
+}
+
+void
+ao_usb_disable(void)
+{
+ /* Disable USB interrupts */
+ USBIIE = 0;
+ USBOIE = 0;
+ USBCIE = 0;
+ IEN2 &= ~IEN2_USBIE;
- ao_add_task(&ao_usb_task, ao_usb_ep0);
+ /* 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");
}