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path: root/src/machine/machine_rp2040_usb.go
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Diffstat (limited to 'src/machine/machine_rp2040_usb.go')
-rw-r--r--src/machine/machine_rp2040_usb.go82
1 files changed, 41 insertions, 41 deletions
diff --git a/src/machine/machine_rp2040_usb.go b/src/machine/machine_rp2040_usb.go
index 6e6fd4962..ac7df9820 100644
--- a/src/machine/machine_rp2040_usb.go
+++ b/src/machine/machine_rp2040_usb.go
@@ -25,7 +25,7 @@ func (dev *USBDevice) Configure(config UARTConfig) {
unresetBlockWait(rp.RESETS_RESET_USBCTRL)
// Clear any previous state in dpram just in case
- usbDPSRAM.clear()
+ _usbDPSRAM.clear()
// Enable USB interrupt at processor
rp.USBCTRL_REGS.INTE.Set(0)
@@ -62,7 +62,7 @@ func handleUSBIRQ(intr interrupt.Interrupt) {
// Setup packet received
if (status & rp.USBCTRL_REGS_INTS_SETUP_REQ) > 0 {
rp.USBCTRL_REGS.SIE_STATUS.Set(rp.USBCTRL_REGS_SIE_STATUS_SETUP_REC)
- setup := usb.NewSetup(usbDPSRAM.setupBytes())
+ setup := usb.NewSetup(_usbDPSRAM.setupBytes())
ok := false
if (setup.BmRequestType & usb.REQUEST_TYPE) == usb.REQUEST_STANDARD {
@@ -136,34 +136,34 @@ func handleUSBIRQ(intr interrupt.Interrupt) {
func initEndpoint(ep, config uint32) {
val := uint32(usbEpControlEnable) | uint32(usbEpControlInterruptPerBuff)
- offset := ep*2*USBBufferLen + 0x100
+ offset := ep*2*usbBufferLen + 0x100
val |= offset
switch config {
case usb.ENDPOINT_TYPE_INTERRUPT | usb.EndpointIn:
val |= usbEpControlEndpointTypeInterrupt
- usbDPSRAM.EPxControl[ep].In.Set(val)
+ _usbDPSRAM.EPxControl[ep].In.Set(val)
case usb.ENDPOINT_TYPE_BULK | usb.EndpointOut:
val |= usbEpControlEndpointTypeBulk
- usbDPSRAM.EPxControl[ep].Out.Set(val)
- usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
+ _usbDPSRAM.EPxControl[ep].Out.Set(val)
+ _usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBufferLen & usbBuf0CtrlLenMask)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
case usb.ENDPOINT_TYPE_INTERRUPT | usb.EndpointOut:
val |= usbEpControlEndpointTypeInterrupt
- usbDPSRAM.EPxControl[ep].Out.Set(val)
- usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
+ _usbDPSRAM.EPxControl[ep].Out.Set(val)
+ _usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBufferLen & usbBuf0CtrlLenMask)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
case usb.ENDPOINT_TYPE_BULK | usb.EndpointIn:
val |= usbEpControlEndpointTypeBulk
- usbDPSRAM.EPxControl[ep].In.Set(val)
+ _usbDPSRAM.EPxControl[ep].In.Set(val)
case usb.ENDPOINT_TYPE_CONTROL:
val |= usbEpControlEndpointTypeControl
- usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBuf0CtrlData1Pid)
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
+ _usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBuf0CtrlData1Pid)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
}
}
@@ -219,37 +219,37 @@ func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
var b [cdcLineInfoSize]byte
ep := 0
- for !usbDPSRAM.EPxBufferControl[ep].Out.HasBits(usbBuf0CtrlFull) {
+ for !_usbDPSRAM.EPxBufferControl[ep].Out.HasBits(usbBuf0CtrlFull) {
// TODO: timeout
}
- ctrl := usbDPSRAM.EPxBufferControl[ep].Out.Get()
- usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
+ ctrl := _usbDPSRAM.EPxBufferControl[ep].Out.Get()
+ _usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBufferLen & usbBuf0CtrlLenMask)
sz := ctrl & usbBuf0CtrlLenMask
- copy(b[:], usbDPSRAM.EPxBuffer[ep].Buffer0[:sz])
+ copy(b[:], _usbDPSRAM.EPxBuffer[ep].Buffer0[:sz])
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
return b, nil
}
func handleEndpointRx(ep uint32) []byte {
- ctrl := usbDPSRAM.EPxBufferControl[ep].Out.Get()
- usbDPSRAM.EPxBufferControl[ep].Out.Set(USBBufferLen & usbBuf0CtrlLenMask)
+ ctrl := _usbDPSRAM.EPxBufferControl[ep].Out.Get()
+ _usbDPSRAM.EPxBufferControl[ep].Out.Set(usbBufferLen & usbBuf0CtrlLenMask)
sz := ctrl & usbBuf0CtrlLenMask
- return usbDPSRAM.EPxBuffer[ep].Buffer0[:sz]
+ return _usbDPSRAM.EPxBuffer[ep].Buffer0[:sz]
}
func handleEndpointRxComplete(ep uint32) {
epXdata0[ep] = !epXdata0[ep]
if epXdata0[ep] || ep == 0 {
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlData1Pid)
}
- usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
+ _usbDPSRAM.EPxBufferControl[ep].Out.SetBits(usbBuf0CtrlAvail)
}
func SendZlp() {
@@ -269,8 +269,8 @@ func sendViaEPIn(ep uint32, data []byte, count int) {
// Mark as full
val |= usbBuf0CtrlFull
- copy(usbDPSRAM.EPxBuffer[ep&0x7F].Buffer0[:], data[:count])
- usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
+ copy(_usbDPSRAM.EPxBuffer[ep&0x7F].Buffer0[:], data[:count])
+ _usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
}
func sendStallViaEPIn(ep uint32) {
@@ -279,41 +279,41 @@ func sendStallViaEPIn(ep uint32) {
rp.USBCTRL_REGS.EP_STALL_ARM.Set(rp.USBCTRL_REGS_EP_STALL_ARM_EP0_IN)
}
val := uint32(usbBuf0CtrlFull)
- usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
+ _usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
val |= uint32(usbBuf0CtrlStall)
- usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
+ _usbDPSRAM.EPxBufferControl[ep&0x7F].In.Set(val)
}
-type USBDPSRAM struct {
+type usbDPSRAM struct {
// Note that EPxControl[0] is not EP0Control but 8-byte setup data.
- EPxControl [16]USBEndpointControlRegister
+ EPxControl [16]usbEndpointControlRegister
- EPxBufferControl [16]USBBufferControlRegister
+ EPxBufferControl [16]usbBufferControlRegister
- EPxBuffer [16]USBBuffer
+ EPxBuffer [16]usbBuffer
}
-type USBEndpointControlRegister struct {
+type usbEndpointControlRegister struct {
In volatile.Register32
Out volatile.Register32
}
-type USBBufferControlRegister struct {
+type usbBufferControlRegister struct {
In volatile.Register32
Out volatile.Register32
}
-type USBBuffer struct {
- Buffer0 [USBBufferLen]byte
- Buffer1 [USBBufferLen]byte
+type usbBuffer struct {
+ Buffer0 [usbBufferLen]byte
+ Buffer1 [usbBufferLen]byte
}
var (
- usbDPSRAM = (*USBDPSRAM)(unsafe.Pointer(uintptr(0x50100000)))
+ _usbDPSRAM = (*usbDPSRAM)(unsafe.Pointer(uintptr(0x50100000)))
epXdata0 [16]bool
setupBytes [8]byte
)
-func (d *USBDPSRAM) setupBytes() []byte {
+func (d *usbDPSRAM) setupBytes() []byte {
data := d.EPxControl[usb.CONTROL_ENDPOINT].In.Get()
setupBytes[0] = byte(data)
@@ -330,7 +330,7 @@ func (d *USBDPSRAM) setupBytes() []byte {
return setupBytes[:]
}
-func (d *USBDPSRAM) clear() {
+func (d *usbDPSRAM) clear() {
for i := 0; i < len(d.EPxControl); i++ {
d.EPxControl[i].In.Set(0)
d.EPxControl[i].Out.Set(0)
@@ -373,5 +373,5 @@ const (
usbBuf0CtrlAvail = 0x00000400
usbBuf0CtrlLenMask = 0x000003FF
- USBBufferLen = 64
+ usbBufferLen = 64
)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 13:03:34 +0000