X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fcc1111%2Fao_usb.c;fp=src%2Fcc1111%2Fao_usb.c;h=0000000000000000000000000000000000000000;hp=259f6512bc5510f7d504fc220f56534bad4bc7c4;hb=0686a7b8aec524d81bda4c572549a3a068ce0eed;hpb=6aa451ce81bfdfe679e3f9902043a5f0d235c745 diff --git a/src/cc1111/ao_usb.c b/src/cc1111/ao_usb.c deleted file mode 100644 index 259f6512..00000000 --- a/src/cc1111/ao_usb.c +++ /dev/null @@ -1,489 +0,0 @@ -/* - * Copyright © 2009 Keith Packard - * - * 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. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include "ao.h" -#include "ao_usb.h" - -struct ao_task __xdata ao_usb_task; - -static __xdata uint16_t ao_usb_in_bytes; -static __pdata uint16_t ao_usb_in_bytes_last; -static __xdata uint16_t ao_usb_out_bytes; -static __pdata uint8_t ao_usb_iif; -__pdata 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 - */ -void -ao_usb_isr(void) __interrupt 6 -{ - USBIF = 0; - ao_usb_iif |= USBIIF; - if (ao_usb_iif & 1) - ao_wakeup(&ao_usb_task); - if (ao_usb_iif & (1 << AO_USB_IN_EP)) - ao_wakeup(&ao_usb_in_bytes); - - if (USBOIF & (1 << AO_USB_OUT_EP)) - ao_wakeup(&ao_stdin_ready); - - if (USBCIF & USBCIF_RSTIF) - ao_usb_set_interrupts(); -#if HAS_BTM -#if BT_LINK_ON_P2 - ao_btm_isr(); -#endif -#endif -#if HAS_P2_ISR - ao_p2_isr(); -#endif -} - -struct ao_usb_setup { - uint8_t dir_type_recip; - uint8_t request; - uint16_t value; - uint16_t index; - uint16_t length; -} __xdata ao_usb_setup; - -__pdata uint8_t ao_usb_ep0_state; -uint8_t * __pdata ao_usb_ep0_in_data; -__pdata uint8_t ao_usb_ep0_in_len; -__pdata uint8_t ao_usb_ep0_in_buf[2]; -__pdata uint8_t ao_usb_ep0_out_len; -__xdata uint8_t *__pdata ao_usb_ep0_out_data; -__pdata uint8_t ao_usb_configuration; - -/* Send an IN data packet */ -static void -ao_usb_ep0_flush(void) -{ - __pdata uint8_t this_len; - __pdata uint8_t cs0; - - /* If the IN packet hasn't been picked up, just return */ - USBINDEX = 0; - cs0 = USBCS0; - if (cs0 & USBCS0_INPKT_RDY) - return; - - this_len = ao_usb_ep0_in_len; - if (this_len > AO_USB_CONTROL_SIZE) - this_len = AO_USB_CONTROL_SIZE; - cs0 = USBCS0_INPKT_RDY; - if (this_len != AO_USB_CONTROL_SIZE) { - cs0 = USBCS0_INPKT_RDY | USBCS0_DATA_END; - ao_usb_ep0_state = AO_USB_EP0_IDLE; - } - ao_usb_ep0_in_len -= this_len; - while (this_len--) - USBFIFO[0] = *ao_usb_ep0_in_data++; - USBINDEX = 0; - USBCS0 = cs0; -} - -__xdata struct ao_usb_line_coding ao_usb_line_coding = {115200, 0, 0, 8}; - -/* Walk through the list of descriptors and find a match - */ -static void -ao_usb_get_descriptor(uint16_t value) -{ - __code uint8_t *__pdata descriptor; - __pdata uint8_t type = value >> 8; - __pdata uint8_t index = value; - - descriptor = ao_usb_descriptors; - while (descriptor[0] != 0) { - if (descriptor[1] == type && index-- == 0) { - if (type == AO_USB_DESC_CONFIGURATION) - ao_usb_ep0_in_len = descriptor[2]; - else - ao_usb_ep0_in_len = descriptor[0]; - ao_usb_ep0_in_data = descriptor; - break; - } - descriptor += descriptor[0]; - } -} - -/* Read data from the ep0 OUT fifo - */ -static void -ao_usb_ep0_fill(void) -{ - __pdata uint8_t len; - - USBINDEX = 0; - len = USBCNT0; - if (len > ao_usb_ep0_out_len) - len = ao_usb_ep0_out_len; - ao_usb_ep0_out_len -= len; - while (len--) - *ao_usb_ep0_out_data++ = USBFIFO[0]; -} - -static void -ao_usb_ep0_queue_byte(uint8_t a) -{ - ao_usb_ep0_in_buf[ao_usb_ep0_in_len++] = a; -} - -static void -ao_usb_set_address(uint8_t address) -{ - ao_usb_running = 1; - USBADDR = address; -} - -static void -ao_usb_set_configuration(void) -{ - /* Set the IN max packet size, double buffered */ - USBINDEX = AO_USB_IN_EP; - USBMAXI = AO_USB_IN_SIZE >> 3; - USBCSIH |= USBCSIH_IN_DBL_BUF; - - /* Set the OUT max packet size, double buffered */ - USBINDEX = AO_USB_OUT_EP; - USBMAXO = AO_USB_OUT_SIZE >> 3; - USBCSOH = USBCSOH_OUT_DBL_BUF; -} - -static void -ao_usb_ep0_setup(void) -{ - /* Pull the setup packet out of the fifo */ - ao_usb_ep0_out_data = (__xdata uint8_t *) &ao_usb_setup; - ao_usb_ep0_out_len = 8; - ao_usb_ep0_fill(); - if (ao_usb_ep0_out_len != 0) - return; - - ao_usb_ep0_in_data = ao_usb_ep0_in_buf; - ao_usb_ep0_in_len = 0; - switch(ao_usb_setup.dir_type_recip & AO_USB_SETUP_TYPE_MASK) { - case AO_USB_TYPE_STANDARD: - switch(ao_usb_setup.dir_type_recip & AO_USB_SETUP_RECIP_MASK) { - case AO_USB_RECIP_DEVICE: - switch(ao_usb_setup.request) { - case AO_USB_REQ_GET_STATUS: - ao_usb_ep0_queue_byte(0); - ao_usb_ep0_queue_byte(0); - break; - case AO_USB_REQ_SET_ADDRESS: -#if USB_FORCE_FLIGHT_IDLE - /* Go to idle mode if USB is connected - */ - ao_flight_force_idle = 1; -#endif - ao_usb_set_address(ao_usb_setup.value); - break; - case AO_USB_REQ_GET_DESCRIPTOR: - ao_usb_get_descriptor(ao_usb_setup.value); - break; - case AO_USB_REQ_GET_CONFIGURATION: - ao_usb_ep0_queue_byte(ao_usb_configuration); - break; - case AO_USB_REQ_SET_CONFIGURATION: - ao_usb_configuration = ao_usb_setup.value; - ao_usb_set_configuration(); - break; - } - 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); - ao_usb_ep0_queue_byte(0); - break; - case AO_USB_REQ_GET_INTERFACE: - ao_usb_ep0_queue_byte(0); - break; - case AO_USB_REQ_SET_INTERFACE: - break; - } - break; - case AO_USB_RECIP_ENDPOINT: - switch(ao_usb_setup.request) { - case AO_USB_REQ_GET_STATUS: - ao_usb_ep0_queue_byte(0); - ao_usb_ep0_queue_byte(0); - break; - } - break; - } - break; - case AO_USB_TYPE_CLASS: - switch (ao_usb_setup.request) { - case AO_USB_SET_LINE_CODING: - ao_usb_ep0_out_len = 7; - ao_usb_ep0_out_data = (__xdata uint8_t *) &ao_usb_line_coding; - break; - case AO_USB_GET_LINE_CODING: - ao_usb_ep0_in_len = 7; - ao_usb_ep0_in_data = (uint8_t *) &ao_usb_line_coding; - break; - case AO_USB_SET_CONTROL_LINE_STATE: - break; - } - break; - } - - /* Figure out how to ACK the setup packet and the - * next state - */ - USBINDEX = 0; - if (ao_usb_ep0_in_len) { - - /* Sending data back to the host - */ - ao_usb_ep0_state = AO_USB_EP0_DATA_IN; - USBCS0 = USBCS0_CLR_OUTPKT_RDY; - if (ao_usb_setup.length < ao_usb_ep0_in_len) - ao_usb_ep0_in_len = ao_usb_setup.length; - ao_usb_ep0_flush(); - } else if (ao_usb_ep0_out_len) { - - /* Receiving data from the host - */ - ao_usb_ep0_state = AO_USB_EP0_DATA_OUT; - USBCS0 = USBCS0_CLR_OUTPKT_RDY; - } else if (ao_usb_setup.length) { - - /* Uh-oh, the host expected to send or receive data - * and we don't know what to do. - */ - ao_usb_ep0_state = AO_USB_EP0_STALL; - USBCS0 = USBCS0_CLR_OUTPKT_RDY | USBCS0_SEND_STALL; - } else { - - /* Simple setup packet with no data - */ - ao_usb_ep0_state = AO_USB_EP0_IDLE; - USBCS0 = USBCS0_CLR_OUTPKT_RDY | USBCS0_DATA_END; - } -} - -/* End point 0 receives all of the control messages. */ -static void -ao_usb_ep0(void) -{ - __pdata uint8_t cs0; - - ao_usb_ep0_state = AO_USB_EP0_IDLE; - for (;;) { - __critical for (;;) { - if (ao_usb_iif & 1) { - ao_usb_iif &= ~1; - break; - } - ao_sleep(&ao_usb_task); - } - USBINDEX = 0; - cs0 = USBCS0; - if (cs0 & USBCS0_SETUP_END) { - USBCS0 = USBCS0_CLR_SETUP_END; - ao_usb_ep0_state = AO_USB_EP0_IDLE; - } - if (cs0 & USBCS0_SENT_STALL) { - USBCS0 = 0; - ao_usb_ep0_state = AO_USB_EP0_IDLE; - } - if (ao_usb_ep0_state == AO_USB_EP0_DATA_IN && - (cs0 & USBCS0_INPKT_RDY) == 0) - { - ao_usb_ep0_flush(); - } - if (cs0 & USBCS0_OUTPKT_RDY) { - switch (ao_usb_ep0_state) { - case AO_USB_EP0_IDLE: - ao_usb_ep0_setup(); - break; - case AO_USB_EP0_DATA_OUT: - ao_usb_ep0_fill(); - USBINDEX = 0; - if (ao_usb_ep0_out_len == 0) { - ao_usb_ep0_state = AO_USB_EP0_IDLE; - USBCS0 = USBCS0_CLR_OUTPKT_RDY | USBCS0_DATA_END; - } else - USBCS0 = USBCS0_CLR_OUTPKT_RDY; - break; - } - } - } -} - -/* Wait for a free IN buffer */ -static void -ao_usb_in_wait(void) -{ - for (;;) { - USBINDEX = AO_USB_IN_EP; - if ((USBCSIL & USBCSIL_INPKT_RDY) == 0) - break; - ao_sleep(&ao_usb_in_bytes); - } -} - -/* Send the current IN packet */ -static void -ao_usb_in_send(void) -{ - USBINDEX = AO_USB_IN_EP; - USBCSIL |= USBCSIL_INPKT_RDY; - ao_usb_in_bytes_last = ao_usb_in_bytes; - ao_usb_in_bytes = 0; -} - -void -ao_usb_flush(void) __critical -{ - if (!ao_usb_running) - return; - - /* If there are pending bytes, or if the last packet was full, - * send another IN packet - */ - if (ao_usb_in_bytes || (ao_usb_in_bytes_last == AO_USB_IN_SIZE)) { - ao_usb_in_wait(); - ao_usb_in_send(); - } -} - -void -ao_usb_putchar(char c) __critical __reentrant -{ - if (!ao_usb_running) - return; - - ao_usb_in_wait(); - - /* Queue a byte, sending the packet when full */ - USBFIFO[AO_USB_IN_EP << 1] = c; - if (++ao_usb_in_bytes == AO_USB_IN_SIZE) - ao_usb_in_send(); -} - -int -_ao_usb_pollchar(void) -{ - uint8_t c; - if (ao_usb_out_bytes == 0) { - USBINDEX = AO_USB_OUT_EP; - if ((USBCSOL & USBCSOL_OUTPKT_RDY) == 0) - return AO_READ_AGAIN; - ao_usb_out_bytes = (USBCNTH << 8) | USBCNTL; - if (ao_usb_out_bytes == 0) { - USBINDEX = AO_USB_OUT_EP; - USBCSOL &= ~USBCSOL_OUTPKT_RDY; - return AO_READ_AGAIN; - } - } - --ao_usb_out_bytes; - c = USBFIFO[AO_USB_OUT_EP << 1]; - if (ao_usb_out_bytes == 0) { - USBINDEX = AO_USB_OUT_EP; - USBCSOL &= ~USBCSOL_OUTPKT_RDY; - } - return c; -} - -char -ao_usb_getchar(void) -{ - int c; - - ao_arch_block_interrupts(); - while ((c = _ao_usb_pollchar()) == AO_READ_AGAIN) - ao_sleep(&ao_stdin_ready); - ao_arch_release_interrupts(); - return c; -} - -void -ao_usb_enable(void) -{ - /* Turn on the USB controller */ - SLEEP |= SLEEP_USB_EN; - - ao_usb_set_configuration(); - - ao_usb_set_interrupts(); - - /* enable USB interrupts */ - IEN2 |= IEN2_USBIE; - - /* Clear any pending interrupts */ - USBCIF = 0; - USBOIF = 0; - USBIIF = 0; -#if HAS_USB_PULLUP - ao_gpio_set(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 0); -#endif -} - -void -ao_usb_disable(void) -{ - /* Disable USB interrupts */ - USBIIE = 0; - USBOIE = 0; - USBCIE = 0; - IEN2 &= ~IEN2_USBIE; - -#if HAS_USB_PULLUP - ao_gpio_set(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 0); -#endif - - /* Clear any pending interrupts */ - USBCIF = 0; - USBOIF = 0; - USBIIF = 0; - - /* Turn off the USB controller */ - SLEEP &= ~SLEEP_USB_EN; -} - -void -ao_usb_init(void) -{ -#if HAS_USB_PULLUP - ao_enable_output(AO_USB_PULLUP_PORT, AO_USB_PULLUP_PIN, AO_USB_PULLUP, 0); -#endif - ao_usb_enable(); - - ao_add_task(&ao_usb_task, ao_usb_ep0, "usb"); - ao_add_stdio(_ao_usb_pollchar, ao_usb_putchar, ao_usb_flush); -}