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wip: packets kinda flow now

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross
2019-01-25 14:28:03 +13:00
parent d31bcea114
commit 5f0d83b2e2
6 changed files with 47 additions and 95 deletions
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11
include/grainuum.h
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@@ -90,6 +90,12 @@ enum usb_pids {
USB_PID_MDATA = 0x0f,
};
enum valenty_usb_pids {
VUSB_PID_IN = 0x2,
VUSB_PID_OUT = 0x0,
VUSB_PID_SETUP = 0x3,
};
struct GrainuumUSB;
struct GrainuumState;
struct GrainuumConfig;
@@ -153,10 +159,10 @@ typedef int (*usb_data_out_finish_t)(struct GrainuumUSB *usb,
struct usb_packet {
union {
struct {
uint8_t pid;
// uint8_t pid;
uint8_t data[GRAINUUM_PACKET_SIZE_MAX + 2]; /* Including CRC */
} __attribute((packed, aligned(4)));
uint8_t raw_data[GRAINUUM_PACKET_SIZE_MAX + 3];
uint8_t raw_data[GRAINUUM_PACKET_SIZE_MAX + 2];
} __attribute((packed, aligned(4)));
uint8_t size; /* Not including pid (so may be 0) */
/* Checksum omitted */
@@ -497,6 +503,7 @@ int grainuumDataQueued(struct GrainuumUSB *usb);
* @api
*/
void grainuumProcess(struct GrainuumUSB *usb,
uint8_t pid,
const uint8_t packet[12],
uint32_t size);

BIN
input/top.bin
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Binary file not shown.

3
src/grainuum-phy.c
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@@ -165,7 +165,7 @@ int grainuumCaptureI(struct GrainuumUSB *usb, uint8_t samples[67])
return 0;
}
grainuumProcess(usb, obufbuf, obufbuf_cnt);
grainuumProcess(usb, last_tok, obufbuf, obufbuf_cnt);
return 0;
}
@@ -210,6 +210,7 @@ void grainuumInit(struct GrainuumUSB *usb,
if (usb->initialized)
return;
printf("Initializing USB to %08x, cfg to 0x%08x 0x%08x\n", usb, cfg, cfg->getDescriptor);
grainuumInitPre(usb);
usb->cfg = cfg;

59
src/grainuum-state.c
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@@ -30,6 +30,7 @@
****************************************************************************/
#include "grainuum.h"
#include <printf.h>
#include <generated/csr.h>
#ifndef NULL
#define NULL ((void *)0)
@@ -118,10 +119,10 @@ static void grainuum_state_process_tx(struct GrainuumState *state)
}
/* Pick the correct PID, DATA0 or DATA1 */
if (state->data_buffer & (1 << state->tok_epnum))
state->packet.pid = USB_PID_DATA1;
else
state->packet.pid = USB_PID_DATA0;
// if (state->data_buffer & (1 << state->tok_epnum))
// state->packet.pid = USB_PID_DATA1;
// else
// state->packet.pid = USB_PID_DATA0;
/* If there's no data, prepare a special NULL packet */
if ((state->data_out_left == 0) || (state->data_out_max == 0)) {
@@ -210,6 +211,7 @@ static int grainuum_state_send_data(struct GrainuumState *state,
state->data_out_max = max;
state->data_out = data;
grainuum_state_process_tx(state);
return 0;
}
@@ -267,6 +269,7 @@ static int grainuum_state_process_setup(struct GrainuumState *state, const uint8
cfg->setConfigNum(usb, setup->wValue);
}
else {
printf("Going to get descriptor @ 0x%08x\n", cfg->getDescriptor);
response_len = cfg->getDescriptor(usb, setup, &response);
}
grainuum_state_send_data(state, state->tok_epnum, response, response_len, setup->wLength);
@@ -308,58 +311,38 @@ static void grainuum_state_parse_data(struct GrainuumState *state,
}
}
static inline void grainuum_state_parse_token(struct GrainuumState *state,
const uint8_t packet[2])
{
state->tok_epnum = (((const uint16_t *)packet)[0] >> 7) & 0xf;
/*state->tok_addr = (((const uint16_t *)packet)[0] >> 11) & 0x1f; // Field unused in this code*/
}
void grainuumProcess(struct GrainuumUSB *usb,
uint8_t pid,
const uint8_t packet[GRAINUUM_PACKET_SIZE_MAX + 3],
uint32_t size)
{
// uint32_t size = packet[GRAINUUM_PACKET_SIZE_MAX + 3];
struct GrainuumState *state = &usb->state;
switch(packet[0]) {
case USB_PID_SETUP:
printf("Setup packet!\n");
printf("Processing %d byte packet %x %08x (%02x)\n", size, pid, packet, packet[0]);
switch(pid) {
case VUSB_PID_SETUP:
printf("Setup packet!\n");
state->packet_type = packet_type_setup;
grainuum_state_clear_tx(state, 1);
grainuum_state_parse_token(state, packet + 1);
break;
case USB_PID_DATA0:
state->data_buffer |= (1 << state->tok_epnum);
grainuum_state_parse_data(state, packet + 1, size - 1);
break;
case USB_PID_DATA1:
state->data_buffer &= ~(1 << state->tok_epnum);
grainuum_state_parse_data(state, packet + 1, size - 1);
break;
case USB_PID_OUT:
grainuum_state_parse_token(state, packet + 1);
state->packet_type = packet_type_out;
state->tok_pos = 0;
state->tok_buf = usb->cfg->getReceiveBuffer(usb, state->tok_epnum, NULL);
break;
case USB_PID_ACK:
state->data_buffer ^= (1 << state->tok_epnum);
usbStateTransferSuccess(state);
if (state->data_out) {
grainuum_state_process_tx(state);
}
else {
grainuum_state_clear_tx(state, 0);
}
break;
default:
printf("Unrecognized PID: %02x\n", pid);
break;
}
if (size == 0) {
usb_ep_0_in_respond_write(0);
usb_ep_0_in_ev_pending_write(0xff);
}
//state->data_buffer |= (1 << state->tok_epnum);
grainuum_state_parse_data(state, packet, size);
}

60
src/main.c
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@@ -28,60 +28,15 @@ static void rv_putchar(void *ignored, char c)
static void init(void)
{
init_printf(NULL, rv_putchar);
irq_setmask(0);
irq_setie(1);
uart_init();
usb_init();
time_init();
init_printf(NULL, rv_putchar);
}
#ifdef CSR_USB_EP_0_OUT_EV_PENDING_ADDR
struct usb_status
{
// uint32_t out_ev_status;
uint32_t out_ev_pending;
uint32_t in_ev_status;
uint32_t out_last_tok;
uint32_t out_obuf_empty;
uint32_t in_ibuf_empty;
};
static struct usb_status get_status(void)
{
struct usb_status s;
// s.out_ev_status = usb_ep_0_out_ev_status_read();
s.out_ev_pending = usb_ep_0_out_ev_pending_read();
s.in_ev_status = usb_ep_0_in_ev_status_read();
s.out_last_tok = usb_ep_0_out_last_tok_read();
s.out_obuf_empty = usb_ep_0_out_obuf_empty_read();
s.in_ibuf_empty = usb_ep_0_in_ibuf_empty_read();
return s;
}
static void get_print_status(void)
{
static int loops;
int obufbuf_cnt = 0;
struct usb_status s = get_status();
// printf("i: %8d OEP: %02x OBE: %02x OLT: %02x\n",
// loops++,
// s.out_ev_pending,
// s.out_obuf_empty,
// s.out_last_tok);
if (s.out_ev_pending & (1 << 1)) {
loops++;
usb_isr();
// for (i = 0; i < 0x20; i++) {
// usb_ep_0_in_ibuf_head_write(i);
// }
// // Indicate that we respond with an ACK
// usb_ep_0_in_respond_write(USB_ACK);
// usb_ep_0_in_ev_pending_write(0xff);
}
}
#else
static void get_print_status(void)
{
@@ -119,21 +74,20 @@ int main(int argc, char **argv)
(void)argv;
init();
printf("\nStatus: %d\n", usb_ep_0_out_ev_pending_read());
get_print_status();
usb_pullup_out_write(1);
usb_ep_0_out_ev_pending_write((1 << 1));
printf("Status: %d\n", usb_ep_0_out_obuf_empty_read());
get_print_status();
if (usb_ep_0_out_ev_pending_read() & (1 << 1))
usb_isr();
printf("Hello, world!\n");
int last_event = 0;
while (1)
{
elapsed(&last_event, 1000);
if (usb_ep_0_out_ev_pending_read() & (1 << 1))
usb_isr();
// elapsed(&last_event, 1000);
get_print_status();
// get_print_status();
}
return 0;
}

9
src/usb.c
View File

@@ -2,6 +2,7 @@
#include <usb.h>
#include <generated/csr.h>
#include <string.h>
#include <printf.h>
#define NUM_BUFFERS 4
#define BUFFER_SIZE 64
@@ -233,22 +234,28 @@ static int get_descriptor(struct GrainuumUSB *usb,
{
const struct usb_setup_packet *setup = packet;
printf("In get_Descriptor()\n");
switch (setup->wValueH)
{
case DT_DEVICE:
printf("Returning device descriptor %d\n", setup->wValueL);
return get_device_descriptor(usb, setup->wValueL, response);
case DT_STRING:
printf("Returning string descriptor %d\n", setup->wValueL);
return get_string_descriptor(usb, setup->wValueL, response);
case DT_CONFIGURATION:
printf("Returning configuration descriptor %d\n", setup->wValueL);
return get_configuration_descriptor(usb, setup->wValueL, response);
case DT_HID_REPORT:
printf("Returning HID descriptor %d\n", setup->wValueL);
return get_hid_report_descriptor(usb, setup->wValueL, response);
}
printf("Returning no descriptor %d\n", setup->wValueL);
return 0;
}