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CCHandshake.c
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CCHandshake.c
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/**
* usbc-pd-fusb302-d: Library for ONSEMI FUSB302-D (USB-C Controller) for PD negotiation
* Copyright (C) 2020 Philip Tschiemer https://filou.se
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "CCHandshake.h"
#include "HW_i2c.h"
static FUSB302_D_t Driver;
#if ONSEMI_LIBRARY==true
#include "Platform_ARM/app/HWIO.h"
#include "Platform_ARM/app/TimeDelay.h"
#include "Platform_ARM/app/Timing.h"
#include "Platform_ARM/app/PlatformI2C.h"
//#include "core/TypeC.h"
#ifdef PWR
#undef PWR
#endif
#ifdef COMP
#undef COMP
#endif
#include "core/fusb30X.h"
extern DeviceReg_t Registers;
#else
// #include "main.h"
#include <string.h>
#include "PD.h"
#include "util-string.h" // https://github.com/tschiemer/c-utils
typedef enum {
PD_State_Disabled,
PD_State_HardReset,
PD_State_Reset,
PD_State_Idle,
PD_State_Rx,
PD_State_AwaitGoodCRC,
PD_State_Resend,
} PD_State_t;
//static uint8_t * regPtr( FUSB302_D_Register_t reg );
static bool read( FUSB302_D_Register_t reg, uint8_t * value );
static bool write( FUSB302_D_Register_t reg, uint8_t value );
static bool readAll( void );
static bool readStatus( void );
static bool configure( void );
static void typeC_core( void );
static bool readCCVoltageLevel( uint8_t * bc_lvl );
static CCHandshake_CC_t detectCCPinSink( void );
static bool enableSink( CCHandshake_CC_t cc );
static bool disableSink();
static void pd_core( void );
static void pd_init( void );
static void pd_deinit( void );
static bool pd_hasMessage( void );
static bool pd_getMessage( PD_Message_t * message );
static bool pd_sendMessage( PD_Message_t * message, PD_State_t (*onAcknowledged)( PD_Message_t * message) );
static PD_State_t pd_processMessage( PD_Message_t * message );
static PD_State_t pd_onSourceCapabilities( PD_Message_t * message );
static void pd_createRequest( PD_Message_t * message );
static void pd_hardreset( void );
static void pd_reset( void );
//static void pd_setRoles( CCHandshake_PD_Role_t powerRole, CCHandshake_PD_Role_t dataRole )
//static void pd_setAutoGoodCrc( bool enabled );
static void pd_flushRxFifo( void );
static void pd_flushTxFifo( void );
static void pd_startTx( void );
static FUSB302_D_Registers_st Registers;
static volatile CCHandshake_CC_t ConnectedCC;
static struct {
volatile PD_State_t State;
struct {
uint8_t MessageId;
PD_Message_t Message;
bool HasData;
} Rx;
struct {
uint8_t MessageId;
PD_Message_t Message;
PD_State_t (*OnAcknowledged)( PD_Message_t * message );
TimerTime_t SentTs;
uint8_t SendAttempts;
} Tx;
struct {
uint8_t NSourceCapabilities;
PD_DataObject_t SourceCapabilities[PD_MESSAGE_MAX_OBJECTS];
uint8_t BestCapIndex;
// PD_DataObject_t BestCap;
} Power;
} PD;
static inline void pd_clearTx( void )
{
memset( (uint8_t*)&PD.Tx.Message, 0, sizeof(PD_Message_t) );
}
static inline uint8_t pd_nextTxMessageId( void )
{
// uint8_t mid = PD.Rx.MessageId + 1;
uint8_t mid = PD.Tx.MessageId;
PD.Tx.MessageId = (PD.Tx.MessageId + 1) % PD_MESSAGE_MAX_MID;
return mid;
}
#endif
void CCHandshake_init( void )
{
FUSB302_D_Init( &Driver, HW_I2C_Handle(), I2CX_IRQn, FUSB302_D_DEFAULT_ADDRESS );
if (FUSB302_D_Probe( &Driver, 3, 100 ) == FUSB302_D_ERROR )
{
Error_Handler( ErrorCodeCCHandshakeFail );
}
#if ONSEMI_LIBRARY==true
// InitializeBoard();
// InitializeDelay();
InitializeCoreTimer();
core_initialize();
DBG( "CC pid=%d v=%d rev=%d\n", Registers.DeviceID.PRODUCT_ID, Registers.DeviceID.VERSION_ID, Registers.DeviceID.REVISION_ID);
core_enable_typec( TRUE ); // Enable the state machine by default
// SetStateUnattached();
#else
ConnectedCC = CCHandshake_CC_None;
// read( FUSB302_D_Register_Reset, );
// Registers.Reset |= FUSB302_D_Reset_SW_RES;
write( FUSB302_D_Register_Reset, FUSB302_D_Reset_SW_RES );
// Registers.Reset &= ~FUSB302_D_Reset_SW_RES;
if (readAll() == false)
{
Error_Handler( ErrorCodeCCHandshakeFail );
}
if (configure() == false)
{
Error_Handler( ErrorCodeCCHandshakeFail );
}
PD.State = PD_State_Disabled;
#endif
}
void CCHandshake_deinit( void )
{
#if ONSEMI_LIBRARY==false
ConnectedCC = CCHandshake_CC_None;
PD.State = PD_State_Disabled;
#endif
}
CCHandshake_CC_t CCHandshake_getOrientation( void )
{
#if ONSEMI_LIBRARY==true
return CCHandshake_CC_None;
#else
return ConnectedCC;
#endif
}
void CCHandshake_core( void )
{
#if ONSEMI_LIBRARY==true
core_state_machine();
#else
#if CCHANDSHAKE_AUTONOMOUS==true
#else
// while(1){
// read all essential registers
readStatus();
// if ( Registers.Interrupt != 0 ){
// DBG("Interrupt %02x\n", Registers.Interrupt);
// }
// if ( Registers.Interrupta != 0 ){
// DBG("Interrupt %02x\n", Registers.Interrupta);
// }
// if ( Registers.Interruptb != 0 ){
// DBG("Interrupt %02x\n", Registers.Interruptb);
// }
typeC_core();
pd_core();
// }
#endif
#endif /* ONSEMI_LIBRARY */
}
#if ONSEMI_LIBRARY==true
FSC_BOOL platform_get_device_irq_state( void )
{
uint8_t reg = 0;
DeviceRead(regInterrupta, 2, &Registers.Status.InterruptAdv);
DeviceRead(regInterrupt, 1, &Registers.Status.Interrupt1);
if (Registers.Status.InterruptAdv != 0 || Registers.Status.Interrupt1 != 0)
{
// DBG("interruptAdv %04X \t interrupt1 %04X\n", Registers.Status.InterruptAdv, Registers.Status.Interrupt1 );
if (Registers.Status.I_OCP_TEMP){ DBG("I_OCP_TEMP " ); }
if (Registers.Status.I_TOGDONE){ DBG("I_TOGDONE " ); }
if (Registers.Status.I_SOFTFAIL){ DBG("I_SOFTFAIL " ); }
if (Registers.Status.I_RETRYFAIL){ DBG("I_RETRYFAIL " ); }
if (Registers.Status.I_HARDSENT){ DBG("I_HARDSENT " ); }
if (Registers.Status.I_TXSENT){ DBG("I_TXSENT " ); }
if (Registers.Status.I_SOFTRST){ DBG("I_SOFTRST " ); }
if (Registers.Status.I_HARDRST){ DBG("I_HARDRST " ); }
if (Registers.Status.I_GCRCSENT){ DBG("I_GCRCSENT " ); }
if (Registers.Status.I_VBUSOK){ DBG("I_VBUSOK " ); }
if (Registers.Status.I_ACTIVITY){ DBG("I_ACTIVITY " ); }
if (Registers.Status.I_COMP_CHNG){ DBG("I_COMP_CHNG " ); }
if (Registers.Status.I_CRC_CHK){ DBG("I_CRC_CHK " ); }
if (Registers.Status.I_ALERT){ DBG("I_ALERT " ); }
if (Registers.Status.I_WAKE){ DBG("I_WAKE " ); }
if (Registers.Status.I_COLLISION){ DBG("I_COLLISION " ); }
if (Registers.Status.I_BC_LVL){ DBG("I_BC_LVL " ); }
DBG("\n");
}
return (Registers.Status.Interrupt1 != 0 || Registers.Status.InterruptAdv != 0);
//
// if (FUSB302_D_Read( &Driver, FUSB302_D_Register_Interrupta, ®) == FUSB302_D_OK)
// {
// if (reg != interrupta)
// {
// interrupta = reg;
// return TRUE;
// }
// }
//
// if (FUSB302_D_Read( &Driver, FUSB302_D_Register_Interruptb, ®) == FUSB302_D_OK)
// {
// if (reg != interruptb)
// {
// interruptb = reg;
// return TRUE;
// }
// }
//
// if (FUSB302_D_Read( &Driver, FUSB302_D_Register_Status0, ®) == FUSB302_D_OK)
// {
// if (reg != status0)
// {
// status0 = reg;
// return TRUE;
// }
// }
//
// if (FUSB302_D_Read( &Driver, FUSB302_D_Register_Status1, ®) == FUSB302_D_OK)
// {
// if (reg != status1)
// {
// status1 = reg;
// return TRUE;
// }
// }
//
// if (FUSB302_D_Read( &Driver, FUSB302_D_Register_Interrupt, ®) == FUSB302_D_OK)
// {
// if (reg != interrupt)
// {
// interrupt = reg;
// return TRUE;
// }
// }
}
#else
static void typeC_core( void )
{
// if not connected check if there is one
if (ConnectedCC == CCHandshake_CC_None)
{
CCHandshake_CC_t detected = detectCCPinSink();
// if none detected, just quit
if (detected == CCHandshake_CC_None)
{
return;
}
// DBG("typeC Switches1 %02x\n", Registers.Switches1 );
if (enableSink( detected ) == false)
{
return;
}
// DBG("typeC Switches1 %02x\n", Registers.Switches1 );
pd_init();
ConnectedCC = detected;
// DBG("typeC Switches1 %02x\n", Registers.Switches1 );
DBG("CC detected %d\n", detected);
}
else // check if it's still connected
{
// if (read( FUSB302_D_Register_Interrupt ) == false)
// {
// return;
// }
if ( (Registers.Interrupt & FUSB302_D_Interrupt_I_BC_LVL) != FUSB302_D_Interrupt_I_BC_LVL )
{
return;
}
uint8_t bc_lvl = 0;
// DBG("typeC Switches1 %02x\n", Registers.Switches1 );
if (readCCVoltageLevel( &bc_lvl ) == false)
{
return;
}
// DBG("typeC Switches1 %02x\n", Registers.Switches1 );
// above threshold?
if (bc_lvl >= CCHANDSHAKE_REQUIRE_BC_LVL)
{
return; // then we're still good
}
if ( disableSink() == false )
{
}
pd_deinit();
ConnectedCC = CCHandshake_CC_None;
DBG("CC lost\n");
}
}
//inline static uint8_t * regPtr( FUSB302_D_Register_t reg )
//{
// switch (reg){
// case FUSB302_D_Register_DeviceID: return &Registers.DeviceID;
// case FUSB302_D_Register_Switches0: return &Registers.Switches0;
// case FUSB302_D_Register_Switches1: return &Registers.Switches1;
// case FUSB302_D_Register_Measure: return &Registers.Measure;
// case FUSB302_D_Register_Slice: return &Registers.Slice;
// case FUSB302_D_Register_Control0: return &Registers.Control0;
// case FUSB302_D_Register_Control1: return &Registers.Control1;
// case FUSB302_D_Register_Control2: return &Registers.Control2;
// case FUSB302_D_Register_Control3: return &Registers.Control3;
// case FUSB302_D_Register_Mask1: return &Registers.Mask1;
// case FUSB302_D_Register_Power: return &Registers.Power;
// case FUSB302_D_Register_Reset: return &Registers.Reset;
// case FUSB302_D_Register_OCPreg: return &Registers.OCPreg;
// case FUSB302_D_Register_Maska: return &Registers.Maska;
// case FUSB302_D_Register_Maskb: return &Registers.Maskb;
// case FUSB302_D_Register_Control4: return &Registers.Control4;
// case FUSB302_D_Register_Status0a: return &Registers.Status0a;
// case FUSB302_D_Register_Status1a: return &Registers.Status1a;
// case FUSB302_D_Register_Interrupta: return &Registers.Interrupta;
// case FUSB302_D_Register_Interruptb: return &Registers.Interruptb;
// case FUSB302_D_Register_Status0: return &Registers.Status0;
// case FUSB302_D_Register_Status1: return &Registers.Status1;
// case FUSB302_D_Register_Interrupt: return &Registers.Interrupt;
// case FUSB302_D_Register_FIFOs: return &Registers.FIFOs;
//
// default: return NULL;
// }
//}
static bool read( FUSB302_D_Register_t reg, uint8_t * value )
{
// uint8_t * r = regPtr( reg );
//
// if (r == NULL)
// {
// return false;
// }
uint8_t r[2] = {0,0};
if (FUSB302_D_Read( &Driver, reg, &r[0] ) == FUSB302_D_ERROR)
{
return false;
}
*value = r[0];
return true;
}
static bool write( FUSB302_D_Register_t reg, uint8_t value )
{
// uint8_t * r = regPtr( reg );
//
// if (r == NULL)
// {
// return false;
// }
if (FUSB302_D_Write( &Driver, reg, value ) == FUSB302_D_ERROR)
{
return false;
}
return true;
}
static bool readAll( void )
{
if (read(FUSB302_D_Register_DeviceID, &Registers.DeviceID) == false) return false;
if (read(FUSB302_D_Register_Switches0, &Registers.Switches0 ) == false) return false;
if (read(FUSB302_D_Register_Switches1, &Registers.Switches1) == false) return false;
if (read(FUSB302_D_Register_Measure, &Registers.Measure ) == false) return false;
if (read(FUSB302_D_Register_Slice, &Registers.Slice) == false) return false;
if (read(FUSB302_D_Register_Control0, &Registers.Control0) == false) return false;
if (read(FUSB302_D_Register_Control1, &Registers.Control1) == false) return false;
if (read(FUSB302_D_Register_Control2, &Registers.Control2 ) == false) return false;
if (read(FUSB302_D_Register_Control3, &Registers.Control3) == false) return false;
if (read(FUSB302_D_Register_Mask1, &Registers.Mask1) == false) return false;
if (read(FUSB302_D_Register_Power, &Registers.Power) == false) return false;
// if (read(FUSB302_D_Register_Reset, &Registers.Reset) == false) return false; // no point in reading this
if (read(FUSB302_D_Register_OCPreg, &Registers.OCPreg) == false) return false;
if (read(FUSB302_D_Register_Maska, &Registers.Maska) == false) return false;
if (read(FUSB302_D_Register_Maskb, &Registers.Maskb) == false) return false;
if (read(FUSB302_D_Register_Control4, &Registers.Control4) == false) return false;
if (read(FUSB302_D_Register_Status0a, &Registers.Status0a) == false) return false;
if (read(FUSB302_D_Register_Status1a, &Registers.Status1a) == false) return false;
if (read(FUSB302_D_Register_Status0, &Registers.Status0) == false) return false;
if (read(FUSB302_D_Register_Status1, &Registers.Status1) == false) return false;
if (read(FUSB302_D_Register_FIFOs, &Registers.FIFOs) == false) return false;
return true;
}
static bool readStatus( void )
{
uint8_t buf[5] = {0,0,0,0,0};
if (FUSB302_D_ReadN( &Driver, FUSB302_D_Register_Interrupta, &buf[0], 5 ) == FUSB302_D_ERROR)
{
DBG("failed read\n");
return false;
}
Registers.Interrupta = buf[0];
Registers.Interruptb = buf[1];
Registers.Status0 = buf[2];
Registers.Status1 = buf[3];
Registers.Interrupt = buf[4];
// if (read(FUSB302_D_Register_Interrupta, &Registers.Interrupta) == false) return false;
// if (read(FUSB302_D_Register_Interruptb, &Registers.Interruptb) == false) return false;
// if (read(FUSB302_D_Register_Status0, &Registers.Status0) == false) return false;
// if (read(FUSB302_D_Register_Status1, &Registers.Status1) == false) return false;
// if (read(FUSB302_D_Register_Interrupt, &Registers.Interrupt) == false) return false;
return true;
}
static bool configure( void )
{
#if CCHANDSHAKE_AUTONOMOUS==true
#else
// enable all power except internal oscillator
Registers.Power = FUSB302_D_Power_PWR_MASK;// & ~FUSB302_D_Power_PWR_InternalOscillator;
if (write( FUSB302_D_Register_Power, Registers.Power ) == false) return false;
// enable high current mode
// if we were using the interrupt pin, also set FUSB302_D_Control0_INT_MASK (don't forget to optionally set TOG_RD_ONLY)
// Registers.Control0 = (Registers.Control0 & ~FUSB302_D_Control0_HOST_CUR_MASK) | FUSB302_D_Control0_HOST_CUR_HighCurrentMode;
// Registers.Control0 &= ~FUSB302_D_Control0_AUTO_PRE; // is 0 by default
// if (write( FUSB302_D_Register_Control0, Registers.Control0 ) == false) return false;
// ON SEMI also sets TOC_USRC_EXIT of "undocumented control 4"
// enable sink polling (NOTE, we're not using it right now, disabled by default)
// read( FUSB302_D_Register_Control2 );
// Registers.Control2 = FUSB302_D_Control2_MODE_SnkPolling | FUSB302_D_Control2_TOGGLE;
// if (write( FUSB302_D_Register_Control2 );
Registers.Switches1 = FUSB302_D_Switches1_POWERROLE_Sink | FUSB302_D_Switches1_DATAROLE_Sink | FUSB302_D_Switches1_SPECREV_Rev2_0 | FUSB302_D_Switches1_AUTO_CRC;
if (write( FUSB302_D_Register_Switches1, Registers.Switches1 ) == false) return false;
// DBG("configure Switches1 %02x\n", Registers.Switches1 );
Registers.Control3 |= FUSB302_D_Control3_AUTO_HARDRESET | FUSB302_D_Control3_AUTO_SOFTRESET | FUSB302_D_Control3_AUTO_RETRY | (0xFF & FUSB302_D_Control3_N_RETRIES_MASK);
if (write( FUSB302_D_Register_Control3, Registers.Control3 ) == false) return false;
// disable all interrupts
Registers.Mask1 = FUSB302_D_Mask1_ALL;
if (write( FUSB302_D_Register_Mask1, Registers.Mask1 ) == false) return false;
Registers.Maska = FUSB302_D_Maska_ALL;
if (write( FUSB302_D_Register_Maska, Registers.Maska ) == false) return false;
Registers.Maskb = FUSB302_D_Maskb_ALL;
if (write( FUSB302_D_Register_Maskb, Registers.Maskb ) == false) return false;
// DBG("configure Switches1 %02x\n", Registers.Switches1 );
#endif
return true;
}
/**
* Tries to get fresh value of measurement (the currently selected cc pin)
*/
static bool readCCVoltageLevel( uint8_t * bc_lvl )
{
if (read(FUSB302_D_Register_Status0, &Registers.Status0) == false)
{
return false;
}
*bc_lvl = Registers.Status0 & FUSB302_D_Status0_BC_LVL_MASK;
return true;
}
/**
* Tries to detect which cc pin has voltage
* WARNING: resets Switches0 register
*/
static CCHandshake_CC_t detectCCPinSink( void )
{
uint8_t BC_LVL;
// read( FUSB302_D_Register_Switches0 );
// enable measurement on cc1
Registers.Switches0 = (Registers.Switches0 & ~FUSB302_D_Switches0_MEAS_CC_MASK) | FUSB302_D_Switches0_MEAS_CC1;// | FUSB302_D_Switches0_PDWN2 | FUSB302_D_Switches0_PDWN1;
write( FUSB302_D_Register_Switches0, Registers.Switches0 );
// wait a bit
DelayMs(250);
// get measurement
if (readCCVoltageLevel( &BC_LVL ) == false)
{
return CCHandshake_CC_None;
}
if ( BC_LVL > FUSB302_D_Status0_BC_LVL_LessThan200mV )
{
return CCHandshake_CC_1;
}
// enable measurement on cc2
Registers.Switches0 = (Registers.Switches0 & ~FUSB302_D_Switches0_MEAS_CC_MASK) | FUSB302_D_Switches0_MEAS_CC2;// | FUSB302_D_Switches0_PDWN2 | FUSB302_D_Switches0_PDWN1;
write( FUSB302_D_Register_Switches0, Registers.Switches0 );
// wait a bit
DelayMs(250);
// get measurement
if (readCCVoltageLevel( &BC_LVL ) == false)
{
return CCHandshake_CC_None;
}
if ( BC_LVL > FUSB302_D_Status0_BC_LVL_LessThan200mV )
{
return CCHandshake_CC_2;
}
return CCHandshake_CC_None;
}
static bool enableSink( CCHandshake_CC_t cc )
{
if (cc == CCHandshake_CC_None)
{
DBG("Trying to enable none!");
return false;
}
// DBG("enableSink Switches1 %02x\n", Registers.Switches1 );
// read( FUSB302_D_Register_Switches1 );
// read( FUSB302_D_Register_Power );
// DBG("switches1 %02x\n", Registers.Switches1 );
// enable meas and txcc
if (cc == CCHandshake_CC_1)
{
Registers.Switches0 = ((Registers.Switches0 & ~FUSB302_D_Switches0_MEAS_CC_MASK) | FUSB302_D_Switches0_MEAS_CC1);
Registers.Switches1 = (Registers.Switches1 & ~FUSB302_D_Switches1_TXCC_MASK) | FUSB302_D_Switches1_TXCC1;
}
else if (cc == CCHandshake_CC_2)
{
Registers.Switches0 = ((Registers.Switches0 & ~FUSB302_D_Switches0_MEAS_CC_MASK) | FUSB302_D_Switches0_MEAS_CC2);
Registers.Switches1 = (Registers.Switches1 & ~(FUSB302_D_Switches1_TXCC_MASK)) | FUSB302_D_Switches1_TXCC2;
}
if (write( FUSB302_D_Register_Switches0, Registers.Switches0 ) == false) return false;
if (write( FUSB302_D_Register_Switches1, Registers.Switches1 ) == false) return false;
// read( FUSB302_D_Register_Switches1, &Registers.Switches1 );
// DBG("enableSink Switches1 %02x\n", Registers.Switches1 );
// enable oscillator for PD
// if ( (Registers.Power & FUSB302_D_Power_PWR_InternalOscillator) != FUSB302_D_Power_PWR_InternalOscillator )
// {
// DBG("activating internal oscillator\n");
// Registers.Power |= FUSB302_D_Power_PWR_InternalOscillator;
// if (write( FUSB302_D_Register_Power, Registers.Power ) == false) return false;
// }
// Registers.Switches
// TXCCx = 1
// MEAS_CCx = 1
// TXCCy = 0
// MEAS_CCy = 0
// Registers.Switches1 // by default we don't have to set this
// POWERROLE = 0
// DATAROLE = 0
// Registers.Control
// ENSOP1 = 0
// ENSOP1DP = 0
// ENSOP2 = 0
// ENSOP2DP = 0
// Registers.Power enable internal oscillator
return true;
}
static bool disableSink()
{
// DBG("disableSink()\n");
// read( FUSB302_D_Register_Switches1 );
// read( FUSB302_D_Register_Power );
// DBG("disableSink Switches1 %02x\n", Registers.Switches1 );
// disable TXCCx
Registers.Switches1 &= ~FUSB302_D_Switches1_TXCC_MASK;
write( FUSB302_D_Register_Switches1, Registers.Switches1 );
// disable CC
Registers.Switches0 &= ~FUSB302_D_Switches0_MEAS_CC_MASK;
write( FUSB302_D_Register_Switches0, Registers.Switches0 );
// DBG("disableSink Switches1 %02x\n", Registers.Switches1 );
// disable oscillator for PD
// Registers.Power &= ~FUSB302_D_Power_PWR_InternalOscillator;
return true;
}
static void pd_core( void )
{
if (PD.State == PD_State_Disabled)
{
// DBG("PD State Disabled\n");
return;
}
// static bool first = true;
// if (first){
// DBG("FIRST\n");
// first = false;
// }
if ( (Registers.Status1 & FUSB302_D_Status1_RX_EMPTY ) == FUSB302_D_Status1_RX_EMPTY){
// DBG("RX_EMPTY\n");
// PD.Rx.HasData |= PD.Rx.HasData;
// PD.State = PD_State_Rx;
}
if ( (Registers.Status1 & FUSB302_D_Status1_RX_FULL ) == FUSB302_D_Status1_RX_FULL){
DBG("RX_FULL\n");
}
if ( (Registers.Status1 & FUSB302_D_Status1_TX_EMPTY ) == FUSB302_D_Status1_TX_EMPTY){
// DBG("TX_EMPTY\n");
}
if ( (Registers.Status1 & FUSB302_D_Status1_TX_FULL ) == FUSB302_D_Status1_TX_FULL){
DBG("TX_FULL\n");
}
if ( (Registers.Interrupt & FUSB302_D_Interrupt_I_COLLISION) == FUSB302_D_Interrupt_I_COLLISION )
{
DBG("I_COLLISION\n");
}
if ( (Registers.Interrupt & FUSB302_D_Interrupt_I_ACTIVITY) == FUSB302_D_Interrupt_I_ACTIVITY )
{
// DBG("I_ACTIVITY\n");
}
if ( (Registers.Interrupt & FUSB302_D_Interrupt_I_ALERT) == FUSB302_D_Interrupt_I_ALERT )
{
DBG("I_ALERT\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_SOFTFAIL ) == FUSB302_D_Interrupta_I_SOFTFAIL){
DBG("I_SOFTFAIL\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_RETRYFAIL ) == FUSB302_D_Interrupta_I_RETRYFAIL){
DBG("I_RETRYFAIL\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_HARDSENT ) == FUSB302_D_Interrupta_I_HARDSENT){
DBG("I_HARDSENT\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_TXSENT ) == FUSB302_D_Interrupta_I_TXSENT){
DBG("I_TXSENT\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_SOFTRST ) == FUSB302_D_Interrupta_I_SOFTRST){
DBG("I_SOFTRST\n");
}
if ( (Registers.Interrupta & FUSB302_D_Interrupta_I_HARDRST ) == FUSB302_D_Interrupta_I_HARDRST){
DBG("I_HARDRST\n");
// PD.State = PD_State_Reset;
}
if ( (Registers.Interruptb & FUSB302_D_Interruptb_I_GCRCSENT ) == FUSB302_D_Interruptb_I_GCRCSENT){
DBG("I_GCRCSENT\n");
PD.State = PD_State_Rx;
}
PD_DataObject_t request = { .Value = 0 };
switch( PD.State )
{
// this is only here to suppress the compiler warning
case PD_State_Disabled:
{
// do nothing
break;
}
case PD_State_HardReset:
{
DBG("PD State HardReset\n");
pd_hardreset();
DelayMs(1);
PD.State = PD_State_Reset;
break;
}
case PD_State_Reset:
{
DBG("PD State Reset\n");
pd_reset();
pd_flushRxFifo();
pd_flushTxFifo();
// try to get source capabilities
pd_clearTx();
PD_newMessage( &PD.Tx.Message, 0, pd_nextTxMessageId(), PD_HeaderWord_PowerRole_Sink, PD_HeaderWord_SpecRev_2_0, PD_HeaderWord_DataRole_Sink, PD_ControlCommand_GetSourceCap, NULL );
pd_sendMessage( &PD.Tx.Message, NULL );
PD.Tx.SendAttempts = 0;
break;
}
case PD_State_Idle:
{
// DBG("PD State Idle\n");
// if neither empty nor full there is data pending
if ((Registers.Status1 & FUSB302_D_Status1_TX_EMPTY ) != FUSB302_D_Status1_TX_EMPTY &&
(Registers.Status1 & FUSB302_D_Status1_TX_FULL ) != FUSB302_D_Status1_TX_FULL )
// (Registers.Interrupt & FUSB302_D_Interrupt_I_ACTIVITY) != FUSB302_D_Interrupt_I_ACTIVITY)
{
// DBG("Resending\n");
// pd_startTx();
// pd_flushTxFifo();
// pd_sendMessage( &PD.Tx.Message, NULL );
}
break;
}
case PD_State_Rx:
{
// DBG("PD State Rx\n");
// if (pd_hasMessage() == false)
// {
// PD.State = PD_State_Idle;
// return;
// }
// DBG("PD has message\n");
// memset( &PD.Rx.Message, 0, sizeof(PD_Message_t) );
if (pd_getMessage( &PD.Rx.Message ) == false)
{
PD.State = PD_State_Idle;
return;
}
// DBG("PD process\n");
PD.State = pd_processMessage( &PD.Rx.Message );
break;
}
// case PD_State_AwaitGoodCRC:
// {
//// DBG("PD State AwaitGoodCRC\n");
//
// if (TimerGetElapsedTime(PD.Tx.SentTs) > 1000){
// if (PD.Tx.SendAttempts > 3)
// {
// PD.State = PD_State_HardReset;
// }
// else
// {
// PD.State = PD_State_Resend;
// }
// break;
// }
//
// if ( (Registers.Interruptb & FUSB302_D_Interruptb_I_GCRCSENT ) == FUSB302_D_Interruptb_I_GCRCSENT){
// PD.State = PD_State_Idle;
// break;
// }
////
//// if (pd_hasMessage() == false)
//// {
//// return;
//// }
////
//// memset( &PD.Rx.Message, 0, sizeof(PD_Message_t) );
////
//// if (pd_getMessage( &PD.Rx.Message ) == false)
//// {
//// return;
//// }
//
// break;
// }
//
// case PD_State_Resend:
// {
// DBG("PD State Resend\n");
//
// pd_sendMessage( &PD.Tx.Message, PD.Tx.OnAcknowledged );
// PD.Tx.SentTs = TimerGetCurrentTime();
// PD.Tx.SendAttempts++;
//
// PD.State = PD_State_AwaitGoodCRC;
//
// break;
// }
default:
PD.State = PD_State_Reset;
}
}
static void pd_init( void )
{
// DBG("pd_init Switches1 %02x\n", Registers.Switches1 );
PD.Rx.HasData = false;
PD.Tx.MessageId = 2;
PD.State = PD_State_Idle;
PD.Power.NSourceCapabilities = 0;
memset( &PD.Power.SourceCapabilities[0], 0, PD_MESSAGE_MAX_OBJECTS * sizeof(PD_DataObject_t) );
PD.Power.BestCapIndex = 0;
// enable auto goodCRC
// DBG("Switches1 %d\n", Registers.Switches1 );
// read( FUSB302_D_Register_Switches1 );
// DBG("Switches1 %d\n", Registers.Switches1 );
// Registers.Switches1 = FUSB302_D_Switches1_SPECREV_Rev2_0 | FUSB302_D_Switches1_AUTO_CRC;
// Registers.Switches1 = (Registers.Switches1 & ~FUSB302_D_Switches1_SPECREV_MASK) | FUSB302_D_Switches1_SPECREV_Rev2_0;
// Registers.Switches1 |= FUSB302_D_Switches1_AUTO_CRC;
// enable meas and txcc
// if (ConnectedCC == CCHandshake_CC_1)
// {
//// Registers.Switches0 = (Registers.Switches0 & ~)
// Registers.Switches1 |= FUSB302_D_Switches1_TXCC1;
// }
// else if (ConnectedCC == CCHandshake_CC_2)
// {
// Registers.Switches1 |= FUSB302_D_Switches1_TXCC2;
//
// }
// DBG("Switches1 %d\n", Registers.Switches1 );
// write( FUSB302_D_Register_Switches1 );
//
// DBG("Switches1 %d\n", Registers.Switches1 );
//
// read( FUSB302_D_Register_Switches1 );
// DBG("Switches1 %d\n", Registers.Switches1 );
// read( FUSB302_D_Register_Control0, Registers.Control0 );
// Registers.Control0 &= ~FUSB302_D_Control0_AUTO_PRE;
// write( FUSB302_D_Register_Control0, Registers.Control0 );
// enable interrupts
// read( FUSB302_D_Register_Maska );
// Registers.Maska |= FUSB302_D_Maska_M_TXSENT;
// write( FUSB302_D_Register_Maska, Registers.Maska );
// read( FUSB302_D_Register_Maskb );
// Registers.Maskb |= FUSB302_D_Maskb_M_GCRCSENT;
// write( FUSB302_D_Register_Maskb, Registers.Maskb );
// pd_reset();
// pd_flushRxFifo();
// pd_flushTxFifo();
// DBG("pd_init Switches1 %02x\n", Registers.Switches1 );
}
static void pd_deinit( void )
{
// DBG("pd_deinit Switches1 %02x\n", Registers.Switches1 );