diff options
Diffstat (limited to 'usb/endpt1.c')
| -rw-r--r-- | usb/endpt1.c | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/usb/endpt1.c b/usb/endpt1.c index ca954fc..4358221 100644 --- a/usb/endpt1.c +++ b/usb/endpt1.c @@ -1,4 +1,5 @@ #include <reg/usbotg.h> +#include <stddef.h> #include <stdint.h> #include "../uart/uart.h" @@ -8,33 +9,45 @@ #define MAX_PACKET 64 -static unsigned char buf[2][MAX_PACKET]; +static unsigned char report[4][4] = { + { 0x00, 0x01, 0x00, 0x00, }, + { 0x00, 0x00, 0x01, 0x00, }, + { 0x00, 0xff, 0x00, 0x00, }, + { 0x00, 0x00, 0xff, 0x00, }, +}; +static int nextrep; void usb_endpt1_enable(void) { + nextrep = 0; + + usb_bdt[1][BDT_TX][BDT_EVEN].addr = &report[0]; + usb_bdt[1][BDT_TX][BDT_EVEN].desc = USB0_BD_INIT(4, nextrep % 2); + nextrep++; + + usb_bdt[1][BDT_TX][BDT_ODD].addr = &report[1]; + usb_bdt[1][BDT_TX][BDT_ODD].desc = USB0_BD_INIT(4, nextrep % 2); + nextrep++; + + USB0_ENDPT(1) = BV(ENDPT_EPTXEN) | BV(ENDPT_EPHSHK); } void usb_endpt1_disable(void) { + USB0_ENDPT(1) = 0; } void usb_endpt1_token(uint8_t state) { - struct usb0_bd *bd; + volatile struct usb0_bd *bd; - uart_puts(" endpt1 token"); - - bd = &BDT_ENDPT(1, GET_BIT(state, STAT_TX), GET_BIT(state, STAT_ODD)); + bd = &usb_bdt[1][GET_BIT(state, STAT_TX)][GET_BIT(state, STAT_ODD)]; switch (GET_BITS(bd->desc, BD_TOK_PID)) { - case BD_TOK_PID_OUT: - bd->desc = USB0_BD_INIT(sizeof buf[0], 1); - /* should never happen */ - break; case BD_TOK_PID_IN: - /*pushtx();*/ + bd->addr = &report[nextrep]; + bd->desc = USB0_BD_INIT(4, nextrep % 2); + nextrep = (nextrep + 1) % 4; break; } - - /*USB0_CTL = BV(CTL_USBENSOFEN);*/ } |