Jun Yamaguchi
1st Release
Fork of
USBDevice
by 
mbed official
Diff: targets/TARGET_Freescale/USBHAL_KL25Z.cpp
- Revision:
- 71:53949e6131f6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Freescale/USBHAL_KL25Z.cpp Thu Jul 27 12:14:04 2017 +0100
@@ -0,0 +1,507 @@
+/* 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_KL25Z) | defined(TARGET_KL43Z) | defined(TARGET_KL46Z) | defined(TARGET_K20D50M) | defined(TARGET_K64F) | defined(TARGET_K22F) | defined(TARGET_TEENSY3_1)
+
+#if defined(TARGET_KSDK2_MCUS)
+#include "fsl_common.h"
+#endif
+#include "USBHAL.h"
+
+USBHAL * USBHAL::instance;
+
+static volatile int epComplete = 0;
+
+// Convert physical endpoint number to register bit
+#define EP(endpoint) (1<<(endpoint))
+
+// Convert physical to logical
+#define PHY_TO_LOG(endpoint) ((endpoint)>>1)
+
+// Get endpoint direction
+#define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
+#define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
+
+#define BD_OWN_MASK (1<<7)
+#define BD_DATA01_MASK (1<<6)
+#define BD_KEEP_MASK (1<<5)
+#define BD_NINC_MASK (1<<4)
+#define BD_DTS_MASK (1<<3)
+#define BD_STALL_MASK (1<<2)
+
+#define TX 1
+#define RX 0
+#define ODD 0
+#define EVEN 1
+// this macro waits a physical endpoint number
+#define EP_BDT_IDX(ep, dir, odd) (((ep * 4) + (2 * dir) + (1 * odd)))
+
+#define SETUP_TOKEN 0x0D
+#define IN_TOKEN 0x09
+#define OUT_TOKEN 0x01
+#define TOK_PID(idx) ((bdt[idx].info >> 2) & 0x0F)
+
+// for each endpt: 8 bytes
+typedef struct BDT {
+ uint8_t info; // BD[0:7]
+ uint8_t dummy; // RSVD: BD[8:15]
+ uint16_t byte_count; // BD[16:32]
+ uint32_t address; // Addr
+} BDT;
+
+// there are:
+// * 4 bidirectionnal endpt -> 8 physical endpt
+// * as there are ODD and EVEN buffer -> 8*2 bdt
+MBED_ALIGN(512) BDT bdt[NUMBER_OF_PHYSICAL_ENDPOINTS * 2]; // 512 bytes aligned!
+
+uint8_t * endpoint_buffer[NUMBER_OF_PHYSICAL_ENDPOINTS * 2];
+
+static uint8_t set_addr = 0;
+static uint8_t addr = 0;
+
+static uint32_t Data1 = 0x55555555;
+
+static uint32_t frameNumber() {
+ return((USB0->FRMNUML | (USB0->FRMNUMH << 8)) & 0x07FF);
+}
+
+uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
+ return 0;
+}
+
+USBHAL::USBHAL(void) {
+ // Disable IRQ
+ NVIC_DisableIRQ(USB0_IRQn);
+
+#if (defined(FSL_FEATURE_SOC_MPU_COUNT) && (FSL_FEATURE_SOC_MPU_COUNT > 0U))
+ MPU->CESR=0;
+#endif
+ // fill in callback array
+ 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;
+ epCallback[6] = &USBHAL::EP4_OUT_callback;
+ epCallback[7] = &USBHAL::EP4_IN_callback;
+
+#if defined(TARGET_KL43Z) || defined(TARGET_K22F) || defined(TARGET_K64F)
+ // enable USBFS clock
+ CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, 48000000U);
+#else
+ // choose usb src as PLL
+ SIM->SOPT2 &= ~SIM_SOPT2_PLLFLLSEL_MASK;
+ SIM->SOPT2 |= (SIM_SOPT2_USBSRC_MASK | (1 << SIM_SOPT2_PLLFLLSEL_SHIFT));
+
+ // enable OTG clock
+ SIM->SCGC4 |= SIM_SCGC4_USBOTG_MASK;
+#endif
+
+ // Attach IRQ
+ instance = this;
+ NVIC_SetVector(USB0_IRQn, (uint32_t)&_usbisr);
+ NVIC_EnableIRQ(USB0_IRQn);
+
+ // USB Module Configuration
+ // Set BDT Base Register
+ USB0->BDTPAGE1 = (uint8_t)((uint32_t)bdt>>8);
+ USB0->BDTPAGE2 = (uint8_t)((uint32_t)bdt>>16);
+ USB0->BDTPAGE3 = (uint8_t)((uint32_t)bdt>>24);
+
+ // Clear interrupt flag
+ USB0->ISTAT = 0xff;
+
+ // USB Interrupt Enablers
+ USB0->INTEN |= USB_INTEN_TOKDNEEN_MASK |
+ USB_INTEN_SOFTOKEN_MASK |
+ USB_INTEN_ERROREN_MASK |
+ USB_INTEN_USBRSTEN_MASK;
+
+ // Disable weak pull downs
+ USB0->USBCTRL &= ~(USB_USBCTRL_PDE_MASK | USB_USBCTRL_SUSP_MASK);
+
+ USB0->USBTRC0 |= 0x40;
+
+ /* Allocate control endpoint buffers */
+ endpoint_buffer[EP_BDT_IDX(0, TX, ODD)] = (uint8_t *)malloc(MAX_PACKET_SIZE_EP0);
+ endpoint_buffer[EP_BDT_IDX(0, RX, ODD)] = (uint8_t *)malloc(MAX_PACKET_SIZE_EP0);
+}
+
+USBHAL::~USBHAL(void) { }
+
+void USBHAL::connect(void) {
+ // enable USB
+ USB0->CTL |= USB_CTL_USBENSOFEN_MASK;
+ // Pull up enable
+ USB0->CONTROL |= USB_CONTROL_DPPULLUPNONOTG_MASK;
+
+ // Allocate endpoint buffers; do allocate control endpoint buffers
+ for (int i = 4; i < (NUMBER_OF_PHYSICAL_ENDPOINTS * 2); i++) {
+ if ((i == EPISO_OUT) || (i == EPISO_IN)) {
+ endpoint_buffer[i] = (uint8_t *)malloc(MAX_PACKET_SIZE_EPISO);
+ } else {
+ endpoint_buffer[i] = (uint8_t *)malloc(MAX_PACKET_SIZE_EPBULK);
+ }
+ }
+}
+
+void USBHAL::disconnect(void) {
+ // disable USB
+ USB0->CTL &= ~USB_CTL_USBENSOFEN_MASK;
+ // Pull up disable
+ USB0->CONTROL &= ~USB_CONTROL_DPPULLUPNONOTG_MASK;
+
+ //Free buffers if required; do not free the control endpoint buffers
+ for (int i = 4; i < (NUMBER_OF_PHYSICAL_ENDPOINTS * 2); i++) {
+ free(endpoint_buffer[i]);
+ endpoint_buffer[i] = NULL;
+ }
+}
+
+void USBHAL::configureDevice(void) {
+ // not needed
+}
+
+void USBHAL::unconfigureDevice(void) {
+ // not needed
+}
+
+void USBHAL::setAddress(uint8_t address) {
+ // we don't set the address now otherwise the usb controller does not ack
+ // we set a flag instead
+ // see usbisr when an IN token is received
+ set_addr = 1;
+ addr = address;
+}
+
+bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
+ uint32_t handshake_flag = 0;
+ uint8_t * buf;
+
+ if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+ return false;
+ }
+
+ uint32_t log_endpoint = PHY_TO_LOG(endpoint);
+
+ if ((flags & ISOCHRONOUS) == 0) {
+ handshake_flag = USB_ENDPT_EPHSHK_MASK;
+ }
+
+ if (IN_EP(endpoint)) {
+ buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)][0];
+ } else {
+ buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)][0];
+ }
+
+ // IN endpt -> device to host (TX)
+ if (IN_EP(endpoint)) {
+ USB0->ENDPOINT[log_endpoint].ENDPT |= handshake_flag | // ep handshaking (not if iso endpoint)
+ USB_ENDPT_EPTXEN_MASK; // en TX (IN) tran
+ bdt[EP_BDT_IDX(log_endpoint, TX, ODD )].address = (uint32_t) buf;
+ bdt[EP_BDT_IDX(log_endpoint, TX, EVEN)].address = 0;
+ }
+ // OUT endpt -> host to device (RX)
+ else {
+ USB0->ENDPOINT[log_endpoint].ENDPT |= handshake_flag | // ep handshaking (not if iso endpoint)
+ USB_ENDPT_EPRXEN_MASK; // en RX (OUT) tran.
+ bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].byte_count = maxPacket;
+ bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].address = (uint32_t) buf;
+ bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].info = BD_OWN_MASK | BD_DTS_MASK;
+ bdt[EP_BDT_IDX(log_endpoint, RX, EVEN)].info = 0;
+ }
+
+ Data1 |= (1 << endpoint);
+
+ return true;
+}
+
+// read setup packet
+void USBHAL::EP0setup(uint8_t *buffer) {
+ uint32_t sz;
+ endpointReadResult(EP0OUT, buffer, &sz);
+}
+
+void USBHAL::EP0readStage(void) {
+ Data1 &= ~1UL; // set DATA0
+ bdt[0].info = (BD_DTS_MASK | BD_OWN_MASK);
+}
+
+void USBHAL::EP0read(void) {
+ uint32_t idx = EP_BDT_IDX(PHY_TO_LOG(EP0OUT), RX, 0);
+ bdt[idx].byte_count = MAX_PACKET_SIZE_EP0;
+}
+
+uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
+ uint32_t sz;
+ endpointReadResult(EP0OUT, buffer, &sz);
+ return sz;
+}
+
+void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
+ endpointWrite(EP0IN, buffer, size);
+}
+
+void USBHAL::EP0getWriteResult(void) {
+}
+
+void USBHAL::EP0stall(void) {
+ stallEndpoint(EP0OUT);
+}
+
+EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
+ endpoint = PHY_TO_LOG(endpoint);
+ uint32_t idx = EP_BDT_IDX(endpoint, RX, 0);
+ bdt[idx].byte_count = maximumSize;
+ return EP_PENDING;
+}
+
+EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
+ uint32_t n, sz, idx, setup = 0;
+ uint8_t not_iso;
+ uint8_t * ep_buf;
+
+ uint32_t log_endpoint = PHY_TO_LOG(endpoint);
+
+ if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+ return EP_INVALID;
+ }
+
+ // if read on a IN endpoint -> error
+ if (IN_EP(endpoint)) {
+ return EP_INVALID;
+ }
+
+ idx = EP_BDT_IDX(log_endpoint, RX, 0);
+ sz = bdt[idx].byte_count;
+ not_iso = USB0->ENDPOINT[log_endpoint].ENDPT & USB_ENDPT_EPHSHK_MASK;
+
+ //for isochronous endpoint, we don't wait an interrupt
+ if ((log_endpoint != 0) && not_iso && !(epComplete & EP(endpoint))) {
+ return EP_PENDING;
+ }
+
+ if ((log_endpoint == 0) && (TOK_PID(idx) == SETUP_TOKEN)) {
+ setup = 1;
+ }
+
+ ep_buf = endpoint_buffer[idx];
+
+ for (n = 0; n < sz; n++) {
+ buffer[n] = ep_buf[n];
+ }
+
+ if (((Data1 >> endpoint) & 1) == ((bdt[idx].info >> 6) & 1)) {
+ if (setup && (buffer[6] == 0)) // if no setup data stage,
+ Data1 &= ~1UL; // set DATA0
+ else
+ Data1 ^= (1 << endpoint);
+ }
+
+ if (((Data1 >> endpoint) & 1)) {
+ bdt[idx].info = BD_DTS_MASK | BD_DATA01_MASK | BD_OWN_MASK;
+ }
+ else {
+ bdt[idx].info = BD_DTS_MASK | BD_OWN_MASK;
+ }
+
+ USB0->CTL &= ~USB_CTL_TXSUSPENDTOKENBUSY_MASK;
+ *bytesRead = sz;
+
+ epComplete &= ~EP(endpoint);
+ return EP_COMPLETED;
+}
+
+EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
+ uint32_t idx, n;
+ uint8_t * ep_buf;
+
+ if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+ return EP_INVALID;
+ }
+
+ // if write on a OUT endpoint -> error
+ if (OUT_EP(endpoint)) {
+ return EP_INVALID;
+ }
+
+ idx = EP_BDT_IDX(PHY_TO_LOG(endpoint), TX, 0);
+ bdt[idx].byte_count = size;
+
+ ep_buf = endpoint_buffer[idx];
+
+ for (n = 0; n < size; n++) {
+ ep_buf[n] = data[n];
+ }
+
+ if ((Data1 >> endpoint) & 1) {
+ bdt[idx].info = BD_OWN_MASK | BD_DTS_MASK;
+ } else {
+ bdt[idx].info = BD_OWN_MASK | BD_DTS_MASK | BD_DATA01_MASK;
+ }
+
+ Data1 ^= (1 << endpoint);
+
+ return EP_PENDING;
+}
+
+EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
+ if (epComplete & EP(endpoint)) {
+ epComplete &= ~EP(endpoint);
+ return EP_COMPLETED;
+ }
+
+ return EP_PENDING;
+}
+
+void USBHAL::stallEndpoint(uint8_t endpoint) {
+ USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT |= USB_ENDPT_EPSTALL_MASK;
+}
+
+void USBHAL::unstallEndpoint(uint8_t endpoint) {
+ USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT &= ~USB_ENDPT_EPSTALL_MASK;
+}
+
+bool USBHAL::getEndpointStallState(uint8_t endpoint) {
+ uint8_t stall = (USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT & USB_ENDPT_EPSTALL_MASK);
+ return (stall) ? true : false;
+}
+
+void USBHAL::remoteWakeup(void) {
+ // [TODO]
+}
+
+
+void USBHAL::_usbisr(void) {
+ instance->usbisr();
+}
+
+
+void USBHAL::usbisr(void) {
+ uint8_t i;
+ uint8_t istat = USB0->ISTAT;
+
+ // reset interrupt
+ if (istat & USB_ISTAT_USBRST_MASK) {
+ // disable all endpt
+ for(i = 0; i < 16; i++) {
+ USB0->ENDPOINT[i].ENDPT = 0x00;
+ }
+
+ // enable control endpoint
+ realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
+ realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
+
+ Data1 = 0x55555555;
+ USB0->CTL |= USB_CTL_ODDRST_MASK;
+
+ USB0->ISTAT = 0xFF; // clear all interrupt status flags
+ USB0->ERRSTAT = 0xFF; // clear all error flags
+ USB0->ERREN = 0xFF; // enable error interrupt sources
+ USB0->ADDR = 0x00; // set default address
+
+ // reset bus for USBDevice layer
+ busReset();
+
+ return;
+ }
+
+ // resume interrupt
+ if (istat & USB_ISTAT_RESUME_MASK) {
+ USB0->ISTAT = USB_ISTAT_RESUME_MASK;
+ }
+
+ // SOF interrupt
+ if (istat & USB_ISTAT_SOFTOK_MASK) {
+ USB0->ISTAT = USB_ISTAT_SOFTOK_MASK;
+ // SOF event, read frame number
+ SOF(frameNumber());
+ }
+
+ // stall interrupt
+ if (istat & 1<<7) {
+ if (USB0->ENDPOINT[0].ENDPT & USB_ENDPT_EPSTALL_MASK)
+ USB0->ENDPOINT[0].ENDPT &= ~USB_ENDPT_EPSTALL_MASK;
+ USB0->ISTAT |= USB_ISTAT_STALL_MASK;
+ }
+
+ // token interrupt
+ if (istat & 1<<3) {
+ uint32_t num = (USB0->STAT >> 4) & 0x0F;
+ uint32_t dir = (USB0->STAT >> 3) & 0x01;
+ uint32_t ev_odd = (USB0->STAT >> 2) & 0x01;
+ int endpoint = (num << 1) | dir;
+
+ // setup packet
+ if ((num == 0) && (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == SETUP_TOKEN)) {
+ Data1 &= ~0x02;
+ bdt[EP_BDT_IDX(0, TX, EVEN)].info &= ~BD_OWN_MASK;
+ bdt[EP_BDT_IDX(0, TX, ODD)].info &= ~BD_OWN_MASK;
+
+ // EP0 SETUP event (SETUP data received)
+ EP0setupCallback();
+
+ } else {
+ // OUT packet
+ if (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == OUT_TOKEN) {
+ if (num == 0)
+ EP0out();
+ else {
+ epComplete |= EP(endpoint);
+ if ((instance->*(epCallback[endpoint - 2]))()) {
+ epComplete &= ~EP(endpoint);
+ }
+ }
+ }
+
+ // IN packet
+ if (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == IN_TOKEN) {
+ if (num == 0) {
+ EP0in();
+ if (set_addr == 1) {
+ USB0->ADDR = addr & 0x7F;
+ set_addr = 0;
+ }
+ }
+ else {
+ epComplete |= EP(endpoint);
+ if ((instance->*(epCallback[endpoint - 2]))()) {
+ epComplete &= ~EP(endpoint);
+ }
+ }
+ }
+ }
+
+ USB0->ISTAT = USB_ISTAT_TOKDNE_MASK;
+ }
+
+ // sleep interrupt
+ if (istat & 1<<4) {
+ USB0->ISTAT |= USB_ISTAT_SLEEP_MASK;
+ }
+
+ // error interrupt
+ if (istat & USB_ISTAT_ERROR_MASK) {
+ USB0->ERRSTAT = 0xFF;
+ USB0->ISTAT |= USB_ISTAT_ERROR_MASK;
+ }
+}
+
+
+#endif