static uint8_t *ao_usb_ep0_rx_buffer;
/* Pointer to bulk data tx/rx buffers in USB memory */
-static uint8_t *ao_usb_in_tx_buffer;
-static uint8_t *ao_usb_out_rx_buffer;
-
-/* Our data buffers */
-static uint8_t ao_usb_tx_buffer[AO_USB_IN_SIZE];
+static uint8_t *ao_usb_in_tx_buffer[2];
+static uint8_t ao_usb_in_tx_cur;
static uint8_t ao_usb_tx_count;
-static uint8_t ao_usb_rx_buffer[AO_USB_OUT_SIZE];
+static uint8_t *ao_usb_out_rx_buffer[2];
+static uint8_t ao_usb_out_rx_cur;
static uint8_t ao_usb_rx_count, ao_usb_rx_pos;
extern struct lpc_usb_endpoint lpc_usb_endpoint;
/* Marks when an OUT packet has been received by the hardware
* but not pulled to the shadow buffer.
*/
-static uint8_t ao_usb_out_avail;
+uint8_t ao_usb_out_avail;
uint8_t ao_usb_running;
static uint8_t ao_usb_configuration;
/* Set up the INT end point */
ao_usb_enable_epn(AO_USB_INT_EP, 0, NULL, 0, NULL);
-
+
/* Set up the OUT end point */
- ao_usb_enable_epn(AO_USB_OUT_EP, AO_USB_OUT_SIZE, &ao_usb_out_rx_buffer, 0, NULL);
+ ao_usb_enable_epn(AO_USB_OUT_EP, AO_USB_OUT_SIZE * 2, &ao_usb_out_rx_buffer[0], 0, NULL);
+ ao_usb_out_rx_buffer[1] = ao_usb_out_rx_buffer[0] + AO_USB_OUT_SIZE;
+ ao_usb_out_rx_cur = 0;
/* Set up the IN end point */
- ao_usb_enable_epn(AO_USB_IN_EP, 0, NULL, AO_USB_IN_SIZE, &ao_usb_in_tx_buffer);
+ ao_usb_enable_epn(AO_USB_IN_EP, 0, NULL, AO_USB_IN_SIZE * 2, &ao_usb_in_tx_buffer[0]);
+ ao_usb_in_tx_buffer[1] = ao_usb_in_tx_buffer[0] + AO_USB_IN_SIZE;
+ ao_usb_in_tx_cur = 0;
ao_usb_running = 1;
}
ao_usb_in_pending = 1;
if (ao_usb_tx_count != AO_USB_IN_SIZE)
ao_usb_in_flushed = 1;
- memcpy(ao_usb_in_tx_buffer, ao_usb_tx_buffer, ao_usb_tx_count);
- ao_usb_set_ep(ao_usb_epn_in(AO_USB_IN_EP), ao_usb_in_tx_buffer, ao_usb_tx_count);
+ ao_usb_set_ep(ao_usb_epn_in(AO_USB_IN_EP), ao_usb_in_tx_buffer[ao_usb_in_tx_cur], ao_usb_tx_count);
+ ao_usb_in_tx_cur = 1 - ao_usb_in_tx_cur;
ao_usb_tx_count = 0;
_tx_dbg0("in_send end");
}
ao_arch_block_interrupts();
_ao_usb_in_wait();
+ ao_arch_release_interrupts();
ao_usb_in_flushed = 0;
- ao_usb_tx_buffer[ao_usb_tx_count++] = (uint8_t) c;
+ ao_usb_in_tx_buffer[ao_usb_in_tx_cur][ao_usb_tx_count++] = (uint8_t) c;
+ ao_arch_block_interrupts();
/* Send the packet when full */
if (ao_usb_tx_count == AO_USB_IN_SIZE) {
_tx_dbg0("putchar full");
ao_arch_release_interrupts();
}
+void *
+ao_usb_alloc(uint16_t len)
+{
+ return ao_usb_alloc_sram(len);
+}
+
+void
+ao_usb_write(void *block, int len)
+{
+ uint8_t *b = block;
+ int this_time;
+
+ if (!ao_usb_running)
+ return;
+
+ if (!ao_usb_in_flushed)
+ ao_usb_flush();
+
+ while (len) {
+ ao_usb_in_flushed = 0;
+ this_time = AO_USB_IN_SIZE;
+ if (this_time > len)
+ this_time = len;
+ b += this_time;
+ len -= this_time;
+
+ ao_arch_block_interrupts();
+ while (ao_usb_in_pending)
+ ao_sleep(&ao_usb_in_pending);
+ ao_usb_in_pending = 1;
+ if (this_time != AO_USB_IN_SIZE)
+ ao_usb_in_flushed = 1;
+ ao_usb_set_ep(ao_usb_epn_in(AO_USB_IN_EP), b, this_time);
+ ao_arch_release_interrupts();
+ }
+}
+
static void
_ao_usb_out_recv(void)
{
_rx_dbg1("out_recv count", ao_usb_rx_count);
debug ("recv %d\n", ao_usb_rx_count);
- debug_data("Fill OUT len %d:", ao_usb_rx_count);
- memcpy(ao_usb_rx_buffer, ao_usb_out_rx_buffer, ao_usb_rx_count);
- debug_data("\n");
+ debug_data("Fill OUT len %d\n", ao_usb_rx_count);
ao_usb_rx_pos = 0;
+ ao_usb_rx_out_cur = 1 - ao_usb_rx_out_cur;
/* ACK the packet */
- ao_usb_set_epn_out(AO_USB_OUT_EP, ao_usb_out_rx_buffer, AO_USB_OUT_SIZE);
+ ao_usb_set_epn_out(AO_USB_OUT_EP, ao_usb_out_rx_buffer[1-ao_usb_rx_out_cur], AO_USB_OUT_SIZE);
}
int
}
/* Pull a character out of the fifo */
- c = ao_usb_rx_buffer[ao_usb_rx_pos++];
+ c = ao_usb_rx_buffer[ao_usb_rx_out_cur][ao_usb_rx_pos++];
return c;
}
int t;
/* Enable USB pins */
-#if HAS_USB_CONNECT
+#if HAS_LPC_USB_CONNECT
lpc_ioconf.pio0_6 = ((LPC_IOCONF_FUNC_USB_CONNECT << LPC_IOCONF_FUNC) |
(LPC_IOCONF_MODE_INACTIVE << LPC_IOCONF_MODE) |
(0 << LPC_IOCONF_HYS) |