Diff: USBDevice/USBHAL_STM32F4.cpp

Revision:

71:53949e6131f6

Parent:

70:2c525a50f1b6

--- a/USBDevice/USBHAL_STM32F4.cpp	Thu Jul 20 10:14:36 2017 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,416 +0,0 @@
-/* Copyright (c) 2010-2011 mbed.org, MIT License
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-* and associated documentation files (the "Software"), to deal in the Software without
-* restriction, including without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
-* Software is furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in all copies or
-* substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#if defined(TARGET_STM32F4) && !defined(USB_STM_HAL)
-
-#include "USBHAL.h"
-#include "USBRegs_STM32.h"
-#include "pinmap.h"
-
-USBHAL * USBHAL::instance;
-
-static volatile int epComplete = 0;
-
-static uint32_t bufferEnd = 0;
-static const uint32_t rxFifoSize = 512;
-static uint32_t rxFifoCount = 0;
-
-static uint32_t setupBuffer[MAX_PACKET_SIZE_EP0 >> 2];
-
-uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
-    return 0;
-}
-
-USBHAL::USBHAL(void) {
-    NVIC_DisableIRQ(OTG_FS_IRQn);
-    epCallback[0] = &USBHAL::EP1_OUT_callback;
-    epCallback[1] = &USBHAL::EP1_IN_callback;
-    epCallback[2] = &USBHAL::EP2_OUT_callback;
-    epCallback[3] = &USBHAL::EP2_IN_callback;
-    epCallback[4] = &USBHAL::EP3_OUT_callback;
-    epCallback[5] = &USBHAL::EP3_IN_callback;
-
-    // Enable power and clocking
-    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
-
-#if defined(TARGET_STM32F407VG) || defined(TARGET_STM32F401RE) || defined(TARGET_STM32F411RE) || defined(TARGET_STM32F412ZG) || defined(TARGET_STM32F429ZI)
-    pin_function(PA_8, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
-    pin_function(PA_9, STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLDOWN, GPIO_AF10_OTG_FS));
-    pin_function(PA_10, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS));
-    pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
-    pin_function(PA_12, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));
-#else
-    pin_function(PA_8, STM_PIN_DATA(2, 10));
-    pin_function(PA_9, STM_PIN_DATA(0, 0));
-    pin_function(PA_10, STM_PIN_DATA(2, 10));
-    pin_function(PA_11, STM_PIN_DATA(2, 10));
-    pin_function(PA_12, STM_PIN_DATA(2, 10));
-
-    // Set ID pin to open drain with pull-up resistor
-    pin_mode(PA_10, OpenDrain);
-    GPIOA->PUPDR &= ~(0x3 << 20);
-    GPIOA->PUPDR |= 1 << 20;
-
-    // Set VBUS pin to open drain
-    pin_mode(PA_9, OpenDrain);
-#endif
-
-    RCC->AHB2ENR |= RCC_AHB2ENR_OTGFSEN;
-
-    // Enable interrupts
-    OTG_FS->GREGS.GAHBCFG |= (1 << 0);
-
-    // Turnaround time to maximum value - too small causes packet loss
-    OTG_FS->GREGS.GUSBCFG |= (0xF << 10);
-
-    // Unmask global interrupts
-    OTG_FS->GREGS.GINTMSK |= (1 << 3) | // SOF
-                             (1 << 4) | // RX FIFO not empty
-                             (1 << 12); // USB reset
-
-    OTG_FS->DREGS.DCFG |= (0x3 << 0) | // Full speed
-                          (1 << 2); // Non-zero-length status OUT handshake
-
-    OTG_FS->GREGS.GCCFG |= (1 << 19) | // Enable VBUS sensing
-                           (1 << 16); // Power Up
-
-    instance = this;
-    NVIC_SetVector(OTG_FS_IRQn, (uint32_t)&_usbisr);
-    NVIC_SetPriority(OTG_FS_IRQn, 1);
-}
-
-USBHAL::~USBHAL(void) {
-}
-
-void USBHAL::connect(void) {
-    NVIC_EnableIRQ(OTG_FS_IRQn);
-}
-
-void USBHAL::disconnect(void) {
-    NVIC_DisableIRQ(OTG_FS_IRQn);
-}
-
-void USBHAL::configureDevice(void) {
-    // Not needed
-}
-
-void USBHAL::unconfigureDevice(void) {
-    // Not needed
-}
-
-void USBHAL::setAddress(uint8_t address) {
-    OTG_FS->DREGS.DCFG |= (address << 4);
-    EP0write(0, 0);
-}
-
-bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket,
-                             uint32_t flags) {
-    uint32_t epIndex = endpoint >> 1;
-
-    uint32_t type;
-    switch (endpoint) {
-        case EP0IN:
-        case EP0OUT:
-            type = 0;
-            break;
-        case EPISO_IN:
-        case EPISO_OUT:
-            type = 1;
-        case EPBULK_IN:
-        case EPBULK_OUT:
-            type = 2;
-            break;
-        case EPINT_IN:
-        case EPINT_OUT:
-            type = 3;
-            break;
-    }
-
-    // Generic in or out EP controls
-    uint32_t control = (maxPacket << 0) | // Packet size
-                       (1 << 15) | // Active endpoint
-                       (type << 18); // Endpoint type
-
-    if (endpoint & 0x1) { // In Endpoint
-        // Set up the Tx FIFO
-        if (endpoint == EP0IN) {
-            OTG_FS->GREGS.DIEPTXF0_HNPTXFSIZ = ((maxPacket >> 2) << 16) |
-                                               (bufferEnd << 0);
-        }
-        else {
-            OTG_FS->GREGS.DIEPTXF[epIndex - 1] = ((maxPacket >> 2) << 16) |
-                                                 (bufferEnd << 0);
-        }
-        bufferEnd += maxPacket >> 2;
-
-        // Set the In EP specific control settings
-        if (endpoint != EP0IN) {
-            control |= (1 << 28); // SD0PID
-        }
-
-        control |= (epIndex << 22) | // TxFIFO index
-                   (1 << 27); // SNAK
-        OTG_FS->INEP_REGS[epIndex].DIEPCTL = control;
-
-        // Unmask the interrupt
-        OTG_FS->DREGS.DAINTMSK |= (1 << epIndex);
-    }
-    else { // Out endpoint
-        // Set the out EP specific control settings
-        control |= (1 << 26); // CNAK
-        OTG_FS->OUTEP_REGS[epIndex].DOEPCTL = control;
-
-        // Unmask the interrupt
-        OTG_FS->DREGS.DAINTMSK |= (1 << (epIndex + 16));
-    }
-    return true;
-}
-
-// read setup packet
-void USBHAL::EP0setup(uint8_t *buffer) {
-    memcpy(buffer, setupBuffer, MAX_PACKET_SIZE_EP0);
-}
-
-void USBHAL::EP0readStage(void) {
-}
-
-void USBHAL::EP0read(void) {
-}
-
-uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
-    uint32_t* buffer32 = (uint32_t *) buffer;
-    uint32_t length = rxFifoCount;
-    for (uint32_t i = 0; i < length; i += 4) {
-        buffer32[i >> 2] = OTG_FS->FIFO[0][0];
-    }
-
-    rxFifoCount = 0;
-    return length;
-}
-
-void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
-    endpointWrite(0, buffer, size);
-}
-
-void USBHAL::EP0getWriteResult(void) {
-}
-
-void USBHAL::EP0stall(void) {
-    // If we stall the out endpoint here then we have problems transferring
-    // and setup requests after the (stalled) get device qualifier requests.
-    // TODO: Find out if this is correct behavior, or whether we are doing
-    // something else wrong
-    stallEndpoint(EP0IN);
-//    stallEndpoint(EP0OUT);
-}
-
-EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
-    uint32_t epIndex = endpoint >> 1;
-    uint32_t size = (1 << 19) | // 1 packet
-                    (maximumSize << 0); // Packet size
-//    if (endpoint == EP0OUT) {
-        size |= (1 << 29); // 1 setup packet
-//    }
-    OTG_FS->OUTEP_REGS[epIndex].DOEPTSIZ = size;
-    OTG_FS->OUTEP_REGS[epIndex].DOEPCTL |= (1 << 31) | // Enable endpoint
-                                           (1 << 26); // Clear NAK
-
-    epComplete &= ~(1 << endpoint);
-    return EP_PENDING;
-}
-
-EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
-    if (!(epComplete & (1 << endpoint))) {
-        return EP_PENDING;
-    }
-
-    uint32_t* buffer32 = (uint32_t *) buffer;
-    uint32_t length = rxFifoCount;
-    for (uint32_t i = 0; i < length; i += 4) {
-        buffer32[i >> 2] = OTG_FS->FIFO[endpoint >> 1][0];
-    }
-    rxFifoCount = 0;
-    *bytesRead = length;
-    return EP_COMPLETED;
-}
-
-EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
-    uint32_t epIndex = endpoint >> 1;
-    OTG_FS->INEP_REGS[epIndex].DIEPTSIZ = (1 << 19) | // 1 packet
-                                          (size << 0); // Size of packet
-    OTG_FS->INEP_REGS[epIndex].DIEPCTL |= (1 << 31) | // Enable endpoint
-                                          (1 << 26); // CNAK
-    OTG_FS->DREGS.DIEPEMPMSK = (1 << epIndex);
-
-    while ((OTG_FS->INEP_REGS[epIndex].DTXFSTS & 0XFFFF) < ((size + 3) >> 2));
-
-    for (uint32_t i=0; i<(size + 3) >> 2; i++, data+=4) {
-        OTG_FS->FIFO[epIndex][0] = *(uint32_t *)data;
-    }
-
-    epComplete &= ~(1 << endpoint);
-
-    return EP_PENDING;
-}
-
-EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
-    if (epComplete & (1 << endpoint)) {
-        epComplete &= ~(1 << endpoint);
-        return EP_COMPLETED;
-    }
-
-    return EP_PENDING;
-}
-
-void USBHAL::stallEndpoint(uint8_t endpoint) {
-    if (endpoint & 0x1) { // In EP
-        OTG_FS->INEP_REGS[endpoint >> 1].DIEPCTL |= (1 << 30) | // Disable
-                                                    (1 << 21); // Stall
-    }
-    else {  // Out EP
-        OTG_FS->DREGS.DCTL |= (1 << 9); // Set global out NAK
-        OTG_FS->OUTEP_REGS[endpoint >> 1].DOEPCTL |= (1 << 30) | // Disable
-                                                     (1 << 21); // Stall
-    }
-}
-
-void USBHAL::unstallEndpoint(uint8_t endpoint) {
-
-}
-
-bool USBHAL::getEndpointStallState(uint8_t endpoint) {
-    return false;
-}
-
-void USBHAL::remoteWakeup(void) {
-}
-
-
-void USBHAL::_usbisr(void) {
-    instance->usbisr();
-}
-
-
-void USBHAL::usbisr(void) {
-    if (OTG_FS->GREGS.GINTSTS & (1 << 11)) { // USB Suspend
-        suspendStateChanged(1);
-    };
-
-    if (OTG_FS->GREGS.GINTSTS & (1 << 12)) { // USB Reset
-        suspendStateChanged(0);
-
-        // Set SNAK bits
-        OTG_FS->OUTEP_REGS[0].DOEPCTL |= (1 << 27);
-        OTG_FS->OUTEP_REGS[1].DOEPCTL |= (1 << 27);
-        OTG_FS->OUTEP_REGS[2].DOEPCTL |= (1 << 27);
-        OTG_FS->OUTEP_REGS[3].DOEPCTL |= (1 << 27);
-
-        OTG_FS->DREGS.DIEPMSK = (1 << 0);
-
-        bufferEnd = 0;
-
-        // Set the receive FIFO size
-        OTG_FS->GREGS.GRXFSIZ = rxFifoSize >> 2;
-        bufferEnd += rxFifoSize >> 2;
-
-        // Create the endpoints, and wait for setup packets on out EP0
-        realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
-        realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
-        endpointRead(EP0OUT, MAX_PACKET_SIZE_EP0);
-
-        OTG_FS->GREGS.GINTSTS = (1 << 12);
-    }
-
-    if (OTG_FS->GREGS.GINTSTS & (1 << 4)) { // RX FIFO not empty
-        uint32_t status = OTG_FS->GREGS.GRXSTSP;
-
-        uint32_t endpoint = (status & 0xF) << 1;
-        uint32_t length = (status >> 4) & 0x7FF;
-        uint32_t type = (status >> 17) & 0xF;
-
-        rxFifoCount = length;
-
-        if (type == 0x6) {
-            // Setup packet
-            for (uint32_t i=0; i<length; i+=4) {
-                setupBuffer[i >> 2] = OTG_FS->FIFO[0][i >> 2];
-            }
-            rxFifoCount = 0;
-        }
-
-        if (type == 0x4) {
-            // Setup complete
-            EP0setupCallback();
-            endpointRead(EP0OUT, MAX_PACKET_SIZE_EP0);
-        }
-
-        if (type == 0x2) {
-            // Out packet
-            if (endpoint == EP0OUT) {
-                EP0out();
-            }
-            else {
-                epComplete |= (1 << endpoint);
-                if ((instance->*(epCallback[endpoint - 2]))()) {
-                    epComplete &= ~(1 << endpoint);
-                }
-            }
-        }
-
-        for (uint32_t i=0; i<rxFifoCount; i+=4) {
-            (void) OTG_FS->FIFO[0][0];
-        }
-        OTG_FS->GREGS.GINTSTS = (1 << 4);
-    }
-
-    if (OTG_FS->GREGS.GINTSTS & (1 << 18)) { // In endpoint interrupt
-        // Loop through the in endpoints
-        for (uint32_t i=0; i<4; i++) {
-            if (OTG_FS->DREGS.DAINT & (1 << i)) { // Interrupt is on endpoint
-
-                if (OTG_FS->INEP_REGS[i].DIEPINT & (1 << 7)) {// Tx FIFO empty
-                    // If the Tx FIFO is empty on EP0 we need to send a further
-                    // packet, so call EP0in()
-                    if (i == 0) {
-                        EP0in();
-                    }
-                    // Clear the interrupt
-                    OTG_FS->INEP_REGS[i].DIEPINT = (1 << 7);
-                    // Stop firing Tx empty interrupts
-                    // Will get turned on again if another write is called
-                    OTG_FS->DREGS.DIEPEMPMSK &= ~(1 << i);
-                }
-
-                // If the transfer is complete
-                if (OTG_FS->INEP_REGS[i].DIEPINT & (1 << 0)) { // Tx Complete
-                    epComplete |= (1 << (1 + (i << 1)));
-                    OTG_FS->INEP_REGS[i].DIEPINT = (1 << 0);
-                }
-            }
-        }
-        OTG_FS->GREGS.GINTSTS = (1 << 18);
-    }
-
-    if (OTG_FS->GREGS.GINTSTS & (1 << 3)) { // Start of frame
-        SOF((OTG_FS->GREGS.GRXSTSR >> 17) & 0xF);
-        OTG_FS->GREGS.GINTSTS = (1 << 3);
-    }
-}
-
-
-#endif