RAM optimization to the USB driver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2732 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 19 insertions, 13 deletions

diff --git a/os/hal/src/usb.c b/os/hal/src/usb.c
index 08fa52a3e..cbbe8f5b3 100644
--- a/os/hal/src/usb.c
+++ b/os/hal/src/usb.c
@@ -234,9 +234,11 @@ void usbInit(void) {
  */

 void usbObjectInit(USBDriver *usbp) {

 

-  usbp->state  = USB_STOP;

-  usbp->config = NULL;

-  usbp->param  = NULL;

+  usbp->state        = USB_STOP;

+  usbp->config       = NULL;

+  usbp->param        = NULL;

+  usbp->transmitting = 0;

+  usbp->receiving    = 0;

 }

 

 /**

@@ -358,10 +360,10 @@ void usbDisableEndpointsI(USBDriver *usbp) {
 size_t usbReadPacketI(USBDriver *usbp, usbep_t ep,

                       uint8_t *buf, size_t n) {

 

-  if (usbp->ep[ep]->receiving)

+  if (usbGetReceiveStatusI(usbp, ep))

     return USB_ENDPOINT_BUSY;

 

-  usbp->ep[ep]->receiving = TRUE;

+  usbp->receiving |= (1 << ep);

   return usb_lld_read_packet(usbp, ep, buf, n);;

 }

 

@@ -385,10 +387,10 @@ size_t usbReadPacketI(USBDriver *usbp, usbep_t ep,
 size_t usbWritePacketI(USBDriver *usbp, usbep_t ep,

                        const uint8_t *buf, size_t n) {

 

-  if (usbp->ep[ep]->transmitting)

+  if (usbGetTransmitStatusI(usbp, ep))

     return USB_ENDPOINT_BUSY;

 

-  usbp->ep[ep]->transmitting = TRUE;

+  usbp->transmitting |= (1 << ep);

   usb_lld_write_packet(usbp, ep, buf, n);

   return 0;

 }

@@ -413,9 +415,10 @@ size_t usbWritePacketI(USBDriver *usbp, usbep_t ep,
 bool_t usbStartReceiveI(USBDriver *usbp, usbep_t ep,

                         uint8_t *buf, size_t n) {

 

-  if (usbp->ep[ep]->receiving)

+  if (usbGetReceiveStatusI(usbp, ep))

     return TRUE;

-  usbp->ep[ep]->receiving = TRUE;

+

+  usbp->receiving |= (1 << ep);

   usb_lld_start_out(usbp, ep, buf, n);

   return FALSE;

 }

@@ -440,9 +443,10 @@ bool_t usbStartReceiveI(USBDriver *usbp, usbep_t ep,
 bool_t usbStartTransmitI(USBDriver *usbp, usbep_t ep,

                          const uint8_t *buf, size_t n) {

 

-  if (usbp->ep[ep]->transmitting)

+  if (usbGetTransmitStatusI(usbp, ep))

     return TRUE;

-  usbp->ep[ep]->transmitting = TRUE;

+

+  usbp->transmitting |= (1 << ep);

   usb_lld_start_in(usbp, ep, buf, n);

   return FALSE;

 }

@@ -460,8 +464,9 @@ bool_t usbStartTransmitI(USBDriver *usbp, usbep_t ep,
  */

 bool_t usbStallReceiveI(USBDriver *usbp, usbep_t ep) {

 

-  if (usbp->ep[ep]->receiving)

+  if (usbGetReceiveStatusI(usbp, ep))

     return TRUE;

+

   usb_lld_stall_out(usbp, ep);

   return FALSE;

 }

@@ -479,8 +484,9 @@ bool_t usbStallReceiveI(USBDriver *usbp, usbep_t ep) {
  */

 bool_t usbStallTransmitI(USBDriver *usbp, usbep_t ep) {

 

-  if (usbp->ep[ep]->transmitting)

+  if (usbGetTransmitStatusI(usbp, ep))

     return TRUE;

+

   usb_lld_stall_in(usbp, ep);

   return FALSE;

 }