Updated the README.txt

[proxmark3-svn] / common / usb_cdc.c

diff --git a/common/usb_cdc.c b/common/usb_cdc.c
index 097d9a4ee97e60eee2dc973c86fc90e430976fbf..c8d5af1c4363d9c152eba6b535a9e53c0fa53364 100644 (file)
--- a/common/usb_cdc.c
+++ b/common/usb_cdc.c
@@ -223,7 +223,6 @@ byte_t btReceiveBank   = AT91C_UDP_RX_DATA_BK0;
 void usb_disable() {\r
   // Disconnect the USB device\r
   AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;\r
-//  SpinDelay(100);\r
   \r
   // Clear all lingering interrupts\r
   if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {\r
@@ -236,32 +235,31 @@ void usb_disable() {
 //* \brief This function Activates the USB device\r
 //*----------------------------------------------------------------------------\r
 void usb_enable() {\r
-  // Set the PLL USB Divider\r
-  AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\r
-  \r
-  // Specific Chip USB Initialisation\r
-  // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock\r
-  AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;\r
-  AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);\r
-  \r
-  // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO\r
-  // Set in PIO mode and Configure in Output\r
-  AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode\r
+       // Set the PLL USB Divider\r
+       AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;\r
+\r
+       // Specific Chip USB Initialisation\r
+       // Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock\r
+       AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;\r
+       AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);\r
+\r
+       // Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO\r
+       // Set in PIO mode and Configure in Output\r
+       AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode\r
        AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output\r
-  \r
-  // Clear for set the Pullup resistor\r
+\r
+       // Clear for set the Pullup resistor\r
        AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;\r
-  \r
-  // Disconnect and reconnect USB controller for 100ms\r
-  usb_disable();\r
-  \r
-  // Wait for a short while\r
-  for (volatile size_t i=0; i<0x100000; i++);\r
-//  SpinDelay(100);\r
 \r
-  // Reconnect USB reconnect\r
-  AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;\r
-  AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;\r
+       // Disconnect and reconnect USB controller for 100ms\r
+       usb_disable();\r
+\r
+       // Wait for a short while\r
+       for (volatile size_t i=0; i<0x100000; i++);\r
+\r
+       // Reconnect USB reconnect\r
+       AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;\r
+       AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;\r
 }\r
 \r
 //*----------------------------------------------------------------------------\r
@@ -300,28 +298,26 @@ bool usb_poll()
 //* \brief Read available data from Endpoint OUT\r
 //*----------------------------------------------------------------------------\r
 uint32_t usb_read(byte_t* data, size_t len) {\r
-  byte_t bank = btReceiveBank;\r
+       byte_t bank = btReceiveBank;\r
        uint32_t packetSize, nbBytesRcv = 0;\r
-  uint32_t time_out = 0;\r
+       uint32_t time_out = 0;\r
   \r
-       while (len)\r
-  {\r
+       while (len)  {\r
                if (!usb_check()) break;\r
 \r
                if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {\r
                        packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r
-      len -= packetSize;\r
+                       len -= packetSize;\r
                        while(packetSize--)\r
                                data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];\r
                        pUdp->UDP_CSR[AT91C_EP_OUT] &= ~(bank);\r
-                       if (bank == AT91C_UDP_RX_DATA_BK0)\r
-      {\r
+                       if (bank == AT91C_UDP_RX_DATA_BK0) {\r
                                bank = AT91C_UDP_RX_DATA_BK1;\r
-      } else {\r
+                       } else {\r
                                bank = AT91C_UDP_RX_DATA_BK0;\r
-      }\r
+                       }\r
                }\r
-    if (time_out++ == 0x1fff) break;\r
+               if (time_out++ == 0x1fff) break;\r
        }\r
 \r
        btReceiveBank = bank;\r
@@ -353,7 +349,7 @@ uint32_t usb_write(const byte_t* data, const size_t len) {
                // Wait for the the first bank to be sent\r
                while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
                        if (!usb_check()) return length;\r
-    }\r
+               }\r
                pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);\r
                while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
                pUdp->UDP_CSR[AT91C_EP_IN] |= AT91C_UDP_TXPKTRDY;\r