The RingBuff library code has been replaced in the XPLAINBridge project with an ultra...

[pub/USBasp.git] / Projects / XPLAINBridge / XPLAINBridge.c

diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c
index ef311d0..ce23862 100644 (file)
--- a/Projects/XPLAINBridge/XPLAINBridge.c
+++ b/Projects/XPLAINBridge/XPLAINBridge.c
@@ -62,7 +62,7 @@ USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
                                .NotificationEndpointDoubleBank = false,
                        },
        };
-       
+
 /** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
 RingBuff_t USBtoUART_Buffer;
 
@@ -77,9 +77,11 @@ int main(void)
 {
        SetupHardware();
        
-       Buffer_Initialize(&USBtoUART_Buffer);
-       Buffer_Initialize(&UARTtoUSB_Buffer);
-
+       USBtoUART_Buffer.In  = USBtoUART_Buffer.Buffer;
+       USBtoUART_Buffer.Out = USBtoUART_Buffer.Buffer;
+       UARTtoUSB_Buffer.In  = UARTtoUSB_Buffer.Buffer;
+       UARTtoUSB_Buffer.Out = UARTtoUSB_Buffer.Buffer;
+       
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
        sei();
 
@@ -123,23 +125,35 @@ void USARTBridge_Task(void)
        /* Read bytes from the USB OUT endpoint into the UART transmit buffer */
        for (uint8_t DataBytesRem = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)
        {
-               if (!(BUFF_STATICSIZE - USBtoUART_Buffer.Elements))
-                 break;
-                 
-               Buffer_StoreElement(&USBtoUART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
+               *USBtoUART_Buffer.In = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+
+               if (++USBtoUART_Buffer.In == &USBtoUART_Buffer.Buffer[128])
+                 USBtoUART_Buffer.In = USBtoUART_Buffer.Buffer;
        }
        
        /* Read bytes from the UART receive buffer into the USB IN endpoint */
-       if (UARTtoUSB_Buffer.Elements)
-         CDC_Device_SendByte(&VirtualSerial_CDC_Interface, Buffer_GetElement(&UARTtoUSB_Buffer));
+       if (UARTtoUSB_Buffer.In != UARTtoUSB_Buffer.Out)
+       {
+               CDC_Device_SendByte(&VirtualSerial_CDC_Interface, *UARTtoUSB_Buffer.Out);
+               if (++UARTtoUSB_Buffer.Out == &UARTtoUSB_Buffer.Buffer[128])
+                 UARTtoUSB_Buffer.Out = UARTtoUSB_Buffer.Buffer;
+       }
        
        /* Load bytes from the UART transmit buffer into the UART */
-       if ((USBtoUART_Buffer.Elements) && SoftUART_IsReady())
-         SoftUART_TxByte(Buffer_GetElement(&USBtoUART_Buffer));
+       if ((USBtoUART_Buffer.In != USBtoUART_Buffer.Out) && SoftUART_IsReady())
+       {
+               SoftUART_TxByte(*USBtoUART_Buffer.Out);
+               if (++USBtoUART_Buffer.Out == &USBtoUART_Buffer.Buffer[128])
+                 USBtoUART_Buffer.Out = USBtoUART_Buffer.Buffer;
+       }
        
        /* Load bytes from the UART into the UART receive buffer */
        if (SoftUART_IsReceived())
-         Buffer_StoreElement(&UARTtoUSB_Buffer, SoftUART_RxByte());
+       {
+               *UARTtoUSB_Buffer.In = SoftUART_RxByte();
+               if (++UARTtoUSB_Buffer.In == &UARTtoUSB_Buffer.Buffer[128])
+                 UARTtoUSB_Buffer.In = UARTtoUSB_Buffer.Buffer;                
+       }
 
        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 }
@@ -169,7 +183,7 @@ void SetupHardware(void)
        _delay_ms(10);
 
        /* Select the firmware mode based on the JTD pin's value */
-       CurrentFirmwareMode = (PINF & (1 << 7)) ? MODE_USART_BRIDGE : MODE_PDI_PROGRAMMER;
+       CurrentFirmwareMode = MODE_USART_BRIDGE; // TEMP (PINF & (1 << 7)) ? MODE_USART_BRIDGE : MODE_PDI_PROGRAMMER;
 
        /* Re-enable JTAG debugging */
        MCUCR &= ~(1 << JTD);