diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cc1111/ao_usb.c | 68 | ||||
| -rw-r--r-- | src/core/ao_usb.h | 1 |
2 files changed, 39 insertions, 30 deletions
diff --git a/src/cc1111/ao_usb.c b/src/cc1111/ao_usb.c index 8bd2efdf..a655d1be 100644 --- a/src/cc1111/ao_usb.c +++ b/src/cc1111/ao_usb.c @@ -152,19 +152,17 @@ ao_usb_ep0_fill(void) *ao_usb_ep0_out_data++ = USBFIFO[0]; } -void +static void ao_usb_ep0_queue_byte(uint8_t a) { ao_usb_ep0_in_buf[ao_usb_ep0_in_len++] = a; } -void +static void ao_usb_set_address(uint8_t address) { ao_usb_running = 1; - USBADDR = address | 0x80; - while (USBADDR & 0x80) - ; + USBADDR = address; } static void @@ -191,24 +189,6 @@ ao_usb_ep0_setup(void) if (ao_usb_ep0_out_len != 0) return; - /* Figure out how to ACK the setup packet */ - if (ao_usb_setup.dir_type_recip & AO_USB_DIR_IN) { - if (ao_usb_setup.length) - ao_usb_ep0_state = AO_USB_EP0_DATA_IN; - else - ao_usb_ep0_state = AO_USB_EP0_IDLE; - } else { - if (ao_usb_setup.length) - ao_usb_ep0_state = AO_USB_EP0_DATA_OUT; - else - ao_usb_ep0_state = AO_USB_EP0_IDLE; - } - USBINDEX = 0; - if (ao_usb_ep0_state == AO_USB_EP0_IDLE) - USBCS0 = USBCS0_CLR_OUTPKT_RDY | USBCS0_DATA_END; - else - USBCS0 = USBCS0_CLR_OUTPKT_RDY; - 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) { @@ -274,10 +254,39 @@ ao_usb_ep0_setup(void) } break; } - if (ao_usb_ep0_state != AO_USB_EP0_DATA_OUT) { + + /* 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; } } @@ -299,12 +308,12 @@ ao_usb_ep0(void) USBINDEX = 0; cs0 = USBCS0; if (cs0 & USBCS0_SETUP_END) { - ao_usb_ep0_state = AO_USB_EP0_IDLE; 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; - USBCS0 &= ~USBCS0_SENT_STALL; } if (ao_usb_ep0_state == AO_USB_EP0_DATA_IN && (cs0 & USBCS0_INPKT_RDY) == 0) @@ -318,12 +327,11 @@ ao_usb_ep0(void) break; case AO_USB_EP0_DATA_OUT: ao_usb_ep0_fill(); - if (ao_usb_ep0_out_len == 0) - ao_usb_ep0_state = AO_USB_EP0_IDLE; USBINDEX = 0; - if (ao_usb_ep0_state == AO_USB_EP0_IDLE) + if (ao_usb_ep0_out_len == 0) { + ao_usb_ep0_state = AO_USB_EP0_IDLE; USBCS0 = USBCS0_CLR_OUTPKT_RDY | USBCS0_DATA_END; - else + } else USBCS0 = USBCS0_CLR_OUTPKT_RDY; break; } diff --git a/src/core/ao_usb.h b/src/core/ao_usb.h index 4476ee6b..6bc77608 100644 --- a/src/core/ao_usb.h +++ b/src/core/ao_usb.h @@ -114,6 +114,7 @@ extern __code __at (0x00aa) uint8_t ao_usb_descriptors []; #define AO_USB_EP0_IDLE 0 #define AO_USB_EP0_DATA_IN 1 #define AO_USB_EP0_DATA_OUT 2 +#define AO_USB_EP0_STALL 3 #define LE_WORD(x) ((x)&0xFF),((uint8_t) (((uint16_t) (x))>>8)) |