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Configurable periodic frame list size

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This commit is contained in:
PaulStoffregen 2017-02-13 02:55:24 -08:00
parent 84752f8310
commit 448910a94f
1 changed files with 24 additions and 2 deletions
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26
ehci.cpp
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@ -24,7 +24,9 @@
#include <Arduino.h>
#include "USBHost.h"
static uint32_t periodictable[32] __attribute__ ((aligned(4096), used));
#define PERIODIC_LIST_SIZE 64
static uint32_t periodictable[PERIODIC_LIST_SIZE] __attribute__ ((aligned(4096), used));
static uint8_t port_state;
#define PORT_STATE_DISCONNECTED 0
#define PORT_STATE_DEBOUNCE 1
@ -131,7 +133,25 @@ void USBHost::begin()
USBHS_ASYNCLISTADDR = 0;
USBHS_USBCMD = USBHS_USBCMD_ITC(8) | USBHS_USBCMD_RS |
USBHS_USBCMD_ASP(3) | USBHS_USBCMD_ASPE |
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(1); // periodic table is 32 pointers
#if PERIODIC_LIST_SIZE == 8
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(3);
#elif PERIODIC_LIST_SIZE == 16
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(2);
#elif PERIODIC_LIST_SIZE == 32
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(1);
#elif PERIODIC_LIST_SIZE == 64
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(0);
#elif PERIODIC_LIST_SIZE == 128
USBHS_USBCMD_FS(3);
#elif PERIODIC_LIST_SIZE == 256
USBHS_USBCMD_FS(2);
#elif PERIODIC_LIST_SIZE == 512
USBHS_USBCMD_FS(1);
#elif PERIODIC_LIST_SIZE == 1024
USBHS_USBCMD_FS(0);
#else
#error "Unsupported PERIODIC_LIST_SIZE"
#endif
// turn on the USB port
//USBHS_PORTSC1 = USBHS_PORTSC_PP;
@ -467,6 +487,8 @@ bool USBHost::queue_Data_Transfer(Pipe_t *pipe, void *buffer, uint32_t len, USBD
uint32_t count;
bool last = false;
// TODO: option for zero length packet? Maybe in Pipe_t fields?
Serial.println("new_Data_Transfer");
// allocate qTDs
transfer = allocate_Transfer();