usb: work-in-progress for USB development
Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
parent
5f0d83b2e2
commit
fae65117cd
71
src/main.c
71
src/main.c
@ -23,7 +23,12 @@ void isr(void)
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static void rv_putchar(void *ignored, char c)
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{
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(void)ignored;
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if (c == '\n')
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uart_write('\r');
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if (c == '\r')
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return;
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uart_write(c);
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// uart_sync();
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}
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static void init(void)
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@ -36,37 +41,21 @@ static void init(void)
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time_init();
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}
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static const char *usb_hw_api(void) {
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#ifdef CSR_USB_EP_0_OUT_EV_PENDING_ADDR
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return "epfifo";
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#else
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static void get_print_status(void)
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{
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static int loops;
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uint32_t obe = usb_obuf_empty_read();
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uint8_t obufbuf[128];
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int obufbuf_cnt = 0;
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loops++;
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while (!usb_obuf_empty_read()) {
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uint32_t obh = usb_obuf_head_read();
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obufbuf[obufbuf_cnt++] = obh;
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usb_obuf_head_write(1);
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#ifdef CSR_USB_OBUF_EMPTY_ADDR
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return "rawfifo";
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#else
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#ifdef CSR_USB_WHATEVER
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return "whatever";
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#else
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return "unrecognized hw api";
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#endif /* CSR_USB_WHATEVER */
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#endif /* CSR_USB_OBUF_EMPTY_ADDR */
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#endif /* CSR_USB_EP_0_OUT_EV_PENDING_ADDR */
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}
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if (obufbuf_cnt) {
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int i;
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printf("i: %d b: %d --", loops, obufbuf_cnt);//obe: %d obh: %02x\n", i, obe, obh);
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for (i = 0; i < obufbuf_cnt; i++) {
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printf(" %02x", obufbuf[i]);
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}
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printf("\n");
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}
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// if (!obe) {
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// uint32_t obh = usb_obuf_head_read();
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// usb_obuf_head_write(1);
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// if (i < 300)
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// printf("i: %8d obe: %d obh: %02x\n", i, obe, obh);
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// }
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}
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#endif
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int main(int argc, char **argv)
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{
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@ -74,20 +63,26 @@ int main(int argc, char **argv)
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(void)argv;
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init();
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usb_pullup_out_write(1);
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usb_ep_0_out_ev_pending_write((1 << 1));
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if (usb_ep_0_out_ev_pending_read() & (1 << 1))
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usb_isr();
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printf("Hello, world!\n");
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printf("\n\nUSB API: %s\n", usb_hw_api());
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// printf("Press any key to enable USB...\n");
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usb_print_status();
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// uart_read();
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printf("Enabling USB\n");
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usb_connect();
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printf("USB enabled, waiting for packet...\n");
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// usb_wait();
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usb_print_status();
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int last = 0;
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while (1)
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{
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if (usb_ep_0_out_ev_pending_read() & (1 << 1))
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usb_isr();
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// elapsed(&last_event, 1000);
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// get_print_status();
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if (usb_irq_happened() != last) {
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last = usb_irq_happened();
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printf("USB %d IRQ happened\n", last);
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}
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// printf("x");
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usb_print_status();
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}
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return 0;
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}
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@ -1,30 +1,19 @@
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#include <grainuum.h>
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#include <usb.h>
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#include <irq.h>
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#include <generated/csr.h>
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#include <string.h>
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#include <printf.h>
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#include <uart.h>
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#ifdef CSR_USB_EP_0_OUT_EV_PENDING_ADDR
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#define NUM_BUFFERS 4
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#define BUFFER_SIZE 64
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#define EP_INTERVAL_MS 6
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static struct GrainuumUSB usb;
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static uint8_t usb_buf[67];
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static uint32_t rx_buffer[NUM_BUFFERS][BUFFER_SIZE / sizeof(uint32_t)];
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static uint8_t rx_buffer_head;
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static uint8_t rx_buffer_tail;
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static uint32_t rx_buffer_queries = 0;
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static void set_usb_config_num(struct GrainuumUSB *usb, int configNum)
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{
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(void)usb;
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(void)configNum;
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;
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}
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//static struct GrainuumUSB usb;
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//static uint8_t usb_buf[67];
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static const uint8_t hid_report_descriptor[] = {
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0x06, 0x00, 0xFF, // (GLOBAL) USAGE_PAGE 0xFF00 Vendor-defined
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0x09, 0x00, // (LOCAL) USAGE 0xFF000000
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@ -114,6 +103,255 @@ static const struct usb_configuration_descriptor configuration_descriptor = {
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},
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};
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enum epfifo_response {
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EPF_ACK = 0,
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EPF_NAK = 1,
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EPF_NONE = 2,
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EPF_STALL = 3,
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};
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#define USB_EV_ERROR 1
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#define USB_EV_PACKET 2
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void usb_connect(void) {
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usb_pullup_out_write(1);
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// By default, it wants to respond with NAK.
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usb_ep_0_out_respond_write(EPF_ACK);
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usb_ep_0_in_respond_write(EPF_NAK);
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usb_ep_0_out_ev_pending_write(usb_ep_0_out_ev_enable_read());
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usb_ep_0_in_ev_pending_write(usb_ep_0_in_ev_pending_read());
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usb_ep_0_out_ev_enable_write(USB_EV_PACKET | USB_EV_ERROR);
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usb_ep_0_in_ev_enable_write(USB_EV_PACKET | USB_EV_ERROR);
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irq_setmask(irq_getmask() | (1 << USB_INTERRUPT));
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}
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void usb_init(void) {
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return;
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}
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volatile int irq_count = 0;
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#define EP0OUT_BUFFERS 64
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static uint8_t usb_ep0out_buffer[EP0OUT_BUFFERS][128];
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uint8_t usb_ep0out_wr_ptr;
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uint8_t usb_ep0out_rd_ptr;
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int descriptor_ptr;
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int max_byte_length = 8;
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static const uint8_t *current_data;
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static int current_length;
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static int current_offset;
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static int current_to_send;
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static int maybe_send_more_data(int epnum) {
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(void)epnum;
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// Don't allow requeueing
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if (usb_ep_0_in_respond_read() != EPF_NAK)
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return -1;
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// if (!usb_ep_0_in_ibuf_empty_read())
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// return -2;
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int this_offset;
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current_to_send = current_length - current_offset;
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if (current_to_send > max_byte_length)
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current_to_send = max_byte_length;
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for (this_offset = current_offset; this_offset < current_offset + current_to_send; this_offset++) {
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usb_ep_0_in_ibuf_head_write(current_data[this_offset]);
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}
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usb_ep_0_in_respond_write(EPF_ACK);
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return 0;
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}
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static int send_data(int epnum, const void *data, int total_count) {
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// Don't allow requeueing
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if (usb_ep_0_in_respond_read() != EPF_NAK)
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return -1;
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current_data = (uint8_t *)data;
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current_length = total_count;
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current_offset = 0;
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maybe_send_more_data(epnum);
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return 0;
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}
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void usb_isr(void) {
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irq_count++;
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uint8_t ep0o_pending = usb_ep_0_out_ev_pending_read();
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uint8_t ep0i_pending = usb_ep_0_in_ev_pending_read();
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if (ep0o_pending) {
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int byte_count = 0;
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uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_wr_ptr];
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while (1) {
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if (usb_ep_0_out_obuf_empty_read())
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break;
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obuf[++byte_count] = usb_ep_0_out_obuf_head_read();
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usb_ep_0_out_obuf_head_write(0);
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}
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usb_ep_0_out_ev_pending_write(ep0o_pending);
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if (byte_count) {
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obuf[0] = byte_count;
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usb_ep0out_wr_ptr = (usb_ep0out_wr_ptr + 1) & (EP0OUT_BUFFERS-1);
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// usb_ep_0_in_dtb_write(1);
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send_data(0, &device_descriptor, sizeof(device_descriptor));
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}
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else {
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usb_ep_0_out_respond_write(EPF_ACK);
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}
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}
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if (ep0i_pending) {
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/*
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uint8_t *descriptor = (uint8_t *)&device_descriptor;
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if (descriptor_ptr < 0) {
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usb_ep_0_in_respond_write(EPF_NAK);
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}
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else if (descriptor_ptr >= sizeof(device_descriptor)) {
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descriptor_ptr = -1;
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usb_ep_0_in_respond_write(EPF_ACK);
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}
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else {
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usb_ep_0_in_respond_write(EPF_NAK);
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for (descriptor_ptr; descriptor_ptr < sizeof(device_descriptor); descriptor_ptr++) {
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usb_ep_0_in_ibuf_head_write(descriptor[descriptor_ptr]);
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}
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usb_ep_0_in_respond_write(EPF_ACK);
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}
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*/
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usb_ep_0_in_respond_write(EPF_NAK);
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current_offset += current_to_send;
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maybe_send_more_data(0);
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usb_ep_0_in_ev_pending_write(ep0i_pending);
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}
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return;
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}
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void usb_wait(void) {
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while (!irq_count)
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;
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}
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int usb_irq_happened(void) {
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return irq_count;
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}
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static const char hex[] = "0123456789abcdef";
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void usb_print_status(void) {
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/*
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printf("EP0_OUT Status: %02x\n", usb_ep_0_out_ev_status_read());
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printf("EP0_OUT Pending: %02x\n", usb_ep_0_out_ev_pending_read());
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printf("EP0_OUT Enable: %02x\n", usb_ep_0_out_ev_enable_read());
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printf("EP0_OUT Last Tok: %02x\n", usb_ep_0_out_last_tok_read());
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printf("EP0_OUT Respond: %02x\n", usb_ep_0_out_respond_read());
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printf("EP0_OUT DTB: %02x\n", usb_ep_0_out_dtb_read());
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printf("EP0_OUT OBUF Head: %02x\n", usb_ep_0_out_obuf_head_read());
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printf("EP0_OUT OBUF Empty: %02x\n", usb_ep_0_out_obuf_empty_read());
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printf("EP0_IN Status: %02x\n", usb_ep_0_in_ev_status_read());
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printf("EP0_IN Pending: %02x\n", usb_ep_0_in_ev_pending_read());
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printf("EP0_IN Enable: %02x\n", usb_ep_0_in_ev_enable_read());
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printf("EP0_IN Last Tok: %02x\n", usb_ep_0_in_last_tok_read());
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printf("EP0_IN Respond: %02x\n", usb_ep_0_in_respond_read());
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printf("EP0_IN DTB: %02x\n", usb_ep_0_in_dtb_read());
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printf("EP0_IN IBUF Head: %02x\n", usb_ep_0_in_ibuf_head_read());
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printf("EP0_IN IBUF Empty: %02x\n", usb_ep_0_in_ibuf_empty_read());
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*/
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while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {
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// printf("for (this_offset = current_offset; this_offset < this_offset + current_to_send; this_offset++) {\n");
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// printf("for (this_offset = %d; this_offset < %d; %d++) {\n", current_offset, this_offset, this_offset + current_to_send, this_offset);
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printf("current_data: 0x%08x\n", current_data);
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printf("current_length: %d\n", current_length);
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printf("current_offset: %d\n", current_offset);
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printf("current_to_send: %d\n", current_to_send);
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uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_rd_ptr];
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uint8_t cnt = obuf[0];
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unsigned int i;
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if (cnt) {
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for (i = 0; i < cnt; i++) {
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uart_write(' ');
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uart_write(hex[(obuf[i+1] >> 4) & 0xf]);
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uart_write(hex[obuf[i+1] & (0xf)]);
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// printf(" %02x", obufbuf[i]);
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}
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uart_write('\r');
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uart_write('\n');
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}
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// printf("\n");
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usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1);
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}
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}
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// static inline unsigned char usb_pullup_out_read(void);
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// static inline void usb_pullup_out_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_ev_status_read(void);
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// static inline void usb_ep_0_out_ev_status_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_ev_pending_read(void);
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// static inline void usb_ep_0_out_ev_pending_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_ev_enable_read(void);
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// static inline void usb_ep_0_out_ev_enable_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_last_tok_read(void);
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// static inline unsigned char usb_ep_0_out_respond_read(void);
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// static inline void usb_ep_0_out_respond_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_dtb_read(void);
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// static inline void usb_ep_0_out_dtb_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_obuf_head_read(void);
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// static inline void usb_ep_0_out_obuf_head_write(unsigned char value);
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// static inline unsigned char usb_ep_0_out_obuf_empty_read(void);
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// static inline unsigned char usb_ep_0_in_ev_status_read(void);
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// static inline void usb_ep_0_in_ev_status_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_ev_pending_read(void);
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// static inline void usb_ep_0_in_ev_pending_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_ev_enable_read(void);
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// static inline void usb_ep_0_in_ev_enable_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_last_tok_read(void);
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// static inline unsigned char usb_ep_0_in_respond_read(void);
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// static inline void usb_ep_0_in_respond_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_dtb_read(void);
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// static inline void usb_ep_0_in_dtb_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_ibuf_head_read(void);
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// static inline void usb_ep_0_in_ibuf_head_write(unsigned char value);
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// static inline unsigned char usb_ep_0_in_ibuf_empty_read(void);
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#if 0
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static uint32_t rx_buffer[NUM_BUFFERS][BUFFER_SIZE / sizeof(uint32_t)];
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static uint8_t rx_buffer_head;
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static uint8_t rx_buffer_tail;
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static uint32_t rx_buffer_queries = 0;
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static void set_usb_config_num(struct GrainuumUSB *usb, int configNum)
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{
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(void)usb;
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(void)configNum;
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;
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}
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#define USB_STR_BUF_LEN 64
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static uint32_t str_buf_storage[USB_STR_BUF_LEN / sizeof(uint32_t)];
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@ -307,30 +545,32 @@ static struct GrainuumConfig cfg = {
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.setConfigNum = set_usb_config_num,
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};
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void usb_isr(void) {
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grainuumCaptureI(&usb, usb_buf);
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return;
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}
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// void usb_isr(void) {
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// // grainuumCaptureI(&usb, usb_buf);
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// return;
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// }
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void usb_init(void) {
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grainuumInit(&usb, &cfg);
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grainuumConnect(&usb);
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return;
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}
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// void usb_init(void) {
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// // grainuumInit(&usb, &cfg);
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// // grainuumConnect(&usb);
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// return;
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// }
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void usbPhyWriteI(const struct GrainuumUSB *usb, const void *buffer, uint32_t size) {
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(void)usb;
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const uint8_t *ubuffer = (const uint8_t *)buffer;
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uint32_t i = 0;
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while (i < size)
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usb_obuf_head_write(ubuffer[i]);
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// (void)usb;
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// const uint8_t *ubuffer = (const uint8_t *)buffer;
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// uint32_t i = 0;
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// while (i < size)
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// usb_obuf_head_write(ubuffer[i]);
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}
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int usbPhyReadI(const struct GrainuumUSB *usb, uint8_t *samples) {
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(void)usb;
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int count = 0;
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while (!usb_ibuf_empty_read()) {
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samples[count++] = usb_ibuf_head_read();
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}
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// while (!usb_ibuf_empty_read()) {
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// samples[count++] = usb_ibuf_head_read();
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// }
|
||||
return count;
|
||||
}
|
||||
#endif
|
||||
#endif /* CSR_USB_EP_0_OUT_EV_PENDING_ADDR */
|
||||
116
src/usb-rawfifo.c
Normal file
116
src/usb-rawfifo.c
Normal file
@ -0,0 +1,116 @@
|
||||
#include <usb.h>
|
||||
#include <irq.h>
|
||||
#include <generated/csr.h>
|
||||
#include <string.h>
|
||||
#include <printf.h>
|
||||
#include <uart.h>
|
||||
|
||||
#ifdef CSR_USB_OBUF_EMPTY_ADDR
|
||||
|
||||
static inline unsigned char usb_obuf_head_read(void);
|
||||
static inline void usb_obuf_head_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_obuf_empty_read(void);
|
||||
|
||||
static inline unsigned char usb_arm_read(void);
|
||||
static inline void usb_arm_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_ibuf_head_read(void);
|
||||
static inline void usb_ibuf_head_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_ibuf_empty_read(void);
|
||||
|
||||
static inline unsigned char usb_pullup_out_read(void);
|
||||
static inline void usb_pullup_out_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_ev_status_read(void);
|
||||
static inline void usb_ev_status_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_ev_pending_read(void);
|
||||
static inline void usb_ev_pending_write(unsigned char value);
|
||||
|
||||
static inline unsigned char usb_ev_enable_read(void);
|
||||
static inline void usb_ev_enable_write(unsigned char value);
|
||||
|
||||
static const char hex[] = "0123456789abcdef";
|
||||
|
||||
uint8_t usb_ep0out_wr_ptr;
|
||||
uint8_t usb_ep0out_rd_ptr;
|
||||
#define EP0OUT_BUFFERS 64
|
||||
static uint8_t usb_ep0out_buffer[EP0OUT_BUFFERS][128];
|
||||
void usb_print_status(void)
|
||||
{
|
||||
static int loops;
|
||||
loops++;
|
||||
|
||||
while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {
|
||||
uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_rd_ptr];
|
||||
uint8_t cnt = obuf[0];
|
||||
unsigned int i;
|
||||
if (cnt) {
|
||||
for (i = 0; i < cnt; i++) {
|
||||
uart_write(' ');
|
||||
uart_write(hex[(obuf[i+1] >> 4) & 0xf]);
|
||||
uart_write(hex[obuf[i+1] & (0xf)]);
|
||||
// printf(" %02x", obufbuf[i]);
|
||||
}
|
||||
uart_write('\r');
|
||||
uart_write('\n');
|
||||
}
|
||||
// printf("\n");
|
||||
usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1);
|
||||
}
|
||||
// if (!obe) {
|
||||
// uint32_t obh = usb_obuf_head_read();
|
||||
// usb_obuf_head_write(1);
|
||||
// if (i < 300)
|
||||
// printf("i: %8d obe: %d obh: %02x\n", i, obe, obh);
|
||||
// }
|
||||
}
|
||||
|
||||
int irq_happened;
|
||||
|
||||
void usb_init(void) {
|
||||
return;
|
||||
}
|
||||
|
||||
void usb_isr(void) {
|
||||
uint8_t pending = usb_ev_pending_read();
|
||||
|
||||
// Advance the obuf head, which will reset the obuf_empty bit
|
||||
if (pending & 1) {
|
||||
int byte_count = 0;
|
||||
uint8_t *obuf = usb_ep0out_buffer[usb_ep0out_wr_ptr];
|
||||
while (1) {
|
||||
if (usb_obuf_empty_read())
|
||||
break;
|
||||
obuf[++byte_count] = usb_obuf_head_read();
|
||||
usb_obuf_head_write(0);
|
||||
}
|
||||
usb_ev_pending_write(1);
|
||||
obuf[0] = byte_count;
|
||||
usb_ep0out_wr_ptr = (usb_ep0out_wr_ptr + 1) & (EP0OUT_BUFFERS-1);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
void usb_connect(void) {
|
||||
usb_pullup_out_write(1);
|
||||
|
||||
usb_ev_pending_write(usb_ev_pending_read());
|
||||
usb_ev_enable_write(0xff);
|
||||
|
||||
irq_setmask(irq_getmask() | (1 << USB_INTERRUPT));
|
||||
}
|
||||
|
||||
void usb_wait(void) {
|
||||
while (!irq_happened)
|
||||
;
|
||||
}
|
||||
|
||||
int usb_irq_happened(void) {
|
||||
return irq_happened;
|
||||
}
|
||||
|
||||
#endif /* CSR_USB_OBUF_EMPTY_ADDR */
|
||||
Loading…
Reference in New Issue
Block a user