/*
* The MIT License (MIT)
*
* Copyright (c) 2021 Rafael Silva (@perigoso)
* Copyright (c) 2021 Ha Thach (tinyusb.org)
*
* 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.
*
* This file is part of the TinyUSB stack.
*/
#include "../board.h"
#include "em_device.h"
/*--------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM */
/*--------------------------------------------------------------------*/
#define LED_PORT 0 // A
#define LED_PIN_R 12 // 12
#define LED_PIN_B 13 // 13
#define LED_PIN_G 14 // 14
#define LED_STATE_ON 0 // active-low
#define BUTTON_PORT 3 // D
#define BUTTON_PIN 5 // 5
#define BUTTON_STATE_ACTIVE 0 // active-low
/*--------------------------------------------------------------------*/
/* Forward USB interrupt events to TinyUSB IRQ Handler */
/*--------------------------------------------------------------------*/
void USB_IRQHandler(void)
{
tud_int_handler(0);
}
/*--------------------------------------------------------------------*/
/* Fault Handlers */
/*--------------------------------------------------------------------*/
void HardFault_Handler(void)
{
asm("bkpt");
}
void MemManage_Handler(void)
{
asm("bkpt");
}
void BusFault_Handler(void)
{
asm("bkpt");
}
void UsageFault_Handler(void)
{
asm("bkpt");
}
/*--------------------------------------------------------------------*/
/* Startup */
/*--------------------------------------------------------------------*/
// Required by __libc_init_array in startup code if we are compiling using
// -nostdlib/-nostartfiles.
void _init(void)
{
}
/*--------------------------------------------------------------------*/
/* Initing Funcs */
/*--------------------------------------------------------------------*/
void emu_init(uint8_t immediate_switch)
{
EMU->PWRCTRL = (immediate_switch ? EMU_PWRCTRL_IMMEDIATEPWRSWITCH : 0) | EMU_PWRCTRL_REGPWRSEL_DVDD | EMU_PWRCTRL_ANASW_AVDD;
}
void emu_reg_init(float target_voltage)
{
if(target_voltage < 2300.f || target_voltage >= 3800.f)
return;
uint8_t level = ((target_voltage - 2300.f) / 100.f);
EMU->R5VCTRL = EMU_R5VCTRL_INPUTMODE_AUTO;
EMU->R5VOUTLEVEL = level; /* Reg output to 3.3V*/
}
void emu_dcdc_init(float target_voltage, float max_ln_current, float max_lp_current, float max_reverse_current)
{
if(target_voltage < 1800.f || target_voltage >= 3000.f)
return;
if(max_ln_current <= 0.f || max_ln_current > 200.f)
return;
if(max_lp_current <= 0.f || max_lp_current > 10000.f)
return;
if(max_reverse_current < 0.f || max_reverse_current > 160.f)
return;
// Low Power & Low Noise current limit
uint8_t lp_bias = 0;
if(max_lp_current < 75.f)
lp_bias = 0;
else if(max_lp_current < 500.f)
lp_bias = 1;
else if(max_lp_current < 2500.f)
lp_bias = 2;
else
lp_bias = 3;
EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_LPCMPBIASEM234H_MASK) | ((uint32_t)lp_bias << _EMU_DCDCMISCCTRL_LPCMPBIASEM234H_SHIFT);
EMU->DCDCMISCCTRL |= EMU_DCDCMISCCTRL_LNFORCECCM; // Force CCM to prevent reverse current
EMU->DCDCLPCTRL |= EMU_DCDCLPCTRL_LPVREFDUTYEN; // Enable duty cycling of the bias for LP mode
EMU->DCDCLNFREQCTRL = (EMU->DCDCLNFREQCTRL & ~_EMU_DCDCLNFREQCTRL_RCOBAND_MASK) | 4; // Set RCO Band to 7MHz
uint8_t fet_count = 0;
if(max_ln_current < 20.f)
fet_count = 4;
else if(max_ln_current >= 20.f && max_ln_current < 40.f)
fet_count = 8;
else
fet_count = 16;
EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_NFETCNT_MASK) | ((uint32_t)(fet_count - 1) << _EMU_DCDCMISCCTRL_NFETCNT_SHIFT);
EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_PFETCNT_MASK) | ((uint32_t)(fet_count - 1) << _EMU_DCDCMISCCTRL_PFETCNT_SHIFT);
uint8_t ln_current_limit = (((max_ln_current + 40.f) * 1.5f) / (5.f * fet_count)) - 1;
uint8_t lp_current_limit = 1; // Recommended value
EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~(_EMU_DCDCMISCCTRL_LNCLIMILIMSEL_MASK | _EMU_DCDCMISCCTRL_LPCLIMILIMSEL_MASK)) | ((uint32_t)ln_current_limit << _EMU_DCDCMISCCTRL_LNCLIMILIMSEL_SHIFT) | ((uint32_t)lp_current_limit << _EMU_DCDCMISCCTRL_LPCLIMILIMSEL_SHIFT);
uint8_t z_det_limit = ((max_reverse_current + 40.f) * 1.5f) / (2.5f * fet_count);
EMU->DCDCZDETCTRL = (EMU->DCDCZDETCTRL & ~_EMU_DCDCZDETCTRL_ZDETILIMSEL_MASK) | ((uint32_t)z_det_limit << _EMU_DCDCZDETCTRL_ZDETILIMSEL_SHIFT);
EMU->DCDCCLIMCTRL |= EMU_DCDCCLIMCTRL_BYPLIMEN; // Enable bypass current limiter to prevent overcurrent when switching modes
// Output Voltage
if(target_voltage > 1800.f)
{
float max_vout = 3000.f;
float min_vout = 1800.f;
float diff_vout = max_vout - min_vout;
uint8_t ln_vref_high = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_MASK) >> _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_SHIFT;
uint8_t ln_vref_low = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_SHIFT;
uint8_t ln_vref = ((target_voltage - min_vout) * (float)(ln_vref_high - ln_vref_low)) / diff_vout;
ln_vref += ln_vref_low;
EMU->DCDCLNVCTRL = (ln_vref << _EMU_DCDCLNVCTRL_LNVREF_SHIFT) | EMU_DCDCLNVCTRL_LNATT;
uint8_t lp_vref_low = 0;
uint8_t lp_vref_high = 0;
switch(lp_bias)
{
case 0:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_SHIFT;
}
break;
case 1:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_SHIFT;
}
break;
case 2:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_SHIFT;
}
break;
case 3:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_SHIFT;
}
break;
}
uint8_t lp_vref = ((target_voltage - min_vout) * (float)(lp_vref_high - lp_vref_low)) / diff_vout;
lp_vref += lp_vref_low;
EMU->DCDCLPVCTRL = (lp_vref << _EMU_DCDCLPVCTRL_LPVREF_SHIFT) | EMU_DCDCLPVCTRL_LPATT;
}
else
{
float max_vout = 1800.f;
float min_vout = 1200.f;
float diff_vout = max_vout - min_vout;
uint8_t ln_vref_high = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_SHIFT;
uint8_t ln_vref_low = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_SHIFT;
uint8_t ln_vref = ((target_voltage - min_vout) * (float)(ln_vref_high - ln_vref_low)) / diff_vout;
ln_vref += ln_vref_low;
EMU->DCDCLNVCTRL = ln_vref << _EMU_DCDCLNVCTRL_LNVREF_SHIFT;
uint8_t lp_vref_low = 0;
uint8_t lp_vref_high = 0;
switch(lp_bias)
{
case 0:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_SHIFT;
}
break;
case 1:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_SHIFT;
}
break;
case 2:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_SHIFT;
}
break;
case 3:
{
lp_vref_high = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_SHIFT;
lp_vref_low = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_SHIFT;
}
break;
}
uint8_t lp_vref = ((target_voltage - min_vout) * (float)(lp_vref_high - lp_vref_low)) / diff_vout;
lp_vref += lp_vref_low;
EMU->DCDCLPVCTRL = lp_vref << _EMU_DCDCLPVCTRL_LPVREF_SHIFT;
}
EMU->DCDCLPCTRL = (EMU->DCDCLPCTRL & ~_EMU_DCDCLPCTRL_LPCMPHYSSELEM234H_MASK) | (((DEVINFO->DCDCLPCMPHYSSEL1 & (((uint32_t)0xFF) << (lp_bias * 8))) >> (lp_bias * 8)) << _EMU_DCDCLPCTRL_LPCMPHYSSELEM234H_SHIFT);
while(EMU->DCDCSYNC & EMU_DCDCSYNC_DCDCCTRLBUSY); // Wait for configuration to write
// Calibration
//EMU->DCDCLNCOMPCTRL = 0x57204077; // Compensation for 1uF DCDC capacitor
EMU->DCDCLNCOMPCTRL = 0xB7102137; // Compensation for 4.7uF DCDC capacitor
// Enable DCDC converter
EMU->DCDCCTRL = EMU_DCDCCTRL_DCDCMODEEM4_EM4LOWPOWER | EMU_DCDCCTRL_DCDCMODEEM23_EM23LOWPOWER | EMU_DCDCCTRL_DCDCMODE_LOWNOISE;
// Switch digital domain to DVDD
EMU->PWRCTRL = EMU_PWRCTRL_REGPWRSEL_DVDD | EMU_PWRCTRL_ANASW_AVDD;
}
void cmu_hfxo_startup_calib(uint16_t ib_trim, uint16_t c_tune)
{
if(CMU->STATUS & CMU_STATUS_HFXOENS)
return;
CMU->HFXOSTARTUPCTRL = (CMU->HFXOSTARTUPCTRL & ~(_CMU_HFXOSTARTUPCTRL_CTUNE_MASK | _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK)) | (((uint32_t)c_tune << _CMU_HFXOSTARTUPCTRL_CTUNE_SHIFT) & _CMU_HFXOSTARTUPCTRL_CTUNE_MASK) | (((uint32_t)ib_trim << _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_SHIFT) & _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK);
}
void cmu_hfxo_steady_calib(uint16_t ib_trim, uint16_t c_tune)
{
if(CMU->STATUS & CMU_STATUS_HFXOENS)
return;
CMU->HFXOSTEADYSTATECTRL = (CMU->HFXOSTEADYSTATECTRL & ~(_CMU_HFXOSTEADYSTATECTRL_CTUNE_MASK | _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_MASK)) | (((uint32_t)c_tune << _CMU_HFXOSTEADYSTATECTRL_CTUNE_SHIFT) & _CMU_HFXOSTEADYSTATECTRL_CTUNE_MASK) | (((uint32_t)ib_trim << _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_SHIFT) & _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_MASK);
}
void cmu_hfrco_calib(uint32_t calibration)
{
if(CMU->STATUS & CMU_STATUS_DPLLENS)
return;
while(CMU->SYNCBUSY & CMU_SYNCBUSY_HFRCOBSY);
CMU->HFRCOCTRL = calibration;
while(CMU->SYNCBUSY & CMU_SYNCBUSY_HFRCOBSY);
}
void cmu_ushfrco_calib(uint8_t enable, uint32_t calibration)
{
if(CMU->USBCRCTRL & CMU_USBCRCTRL_USBCREN)
return;
if(!enable)
{
CMU->OSCENCMD = CMU_OSCENCMD_USHFRCODIS;
while(CMU->STATUS & CMU_STATUS_USHFRCOENS);
return;
}
while(CMU->SYNCBUSY & CMU_SYNCBUSY_USHFRCOBSY);
CMU->USHFRCOCTRL = calibration | CMU_USHFRCOCTRL_FINETUNINGEN;
while(CMU->SYNCBUSY & CMU_SYNCBUSY_USHFRCOBSY);
if(enable && !(CMU->STATUS & CMU_STATUS_USHFRCOENS))
{
CMU->OSCENCMD = CMU_OSCENCMD_USHFRCOEN;
while(!(CMU->STATUS & CMU_STATUS_USHFRCORDY));
}
}
void cmu_auxhfrco_calib(uint8_t enable, uint32_t calibration)
{
if(!enable)
{
CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCODIS;
while(CMU->STATUS & CMU_STATUS_AUXHFRCOENS);
return;
}
while(CMU->SYNCBUSY & CMU_SYNCBUSY_AUXHFRCOBSY);
CMU->AUXHFRCOCTRL = calibration;
while(CMU->SYNCBUSY & CMU_SYNCBUSY_AUXHFRCOBSY);
if(enable && !(CMU->STATUS & CMU_STATUS_AUXHFRCOENS))
{
CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCOEN;
while(!(CMU->STATUS & CMU_STATUS_AUXHFRCORDY));
}
}
void cmu_init(void)
{
// Change SDIO clock to HFXO if HFRCO selected and disable it
CMU->SDIOCTRL = CMU_SDIOCTRL_SDIOCLKDIS | CMU_SDIOCTRL_SDIOCLKSEL_HFXO;
while(CMU->STATUS & CMU_STATUS_SDIOCLKENS);
// Change QSPI clock to HFXO if HFRCO selected and disable it
CMU->QSPICTRL = CMU_QSPICTRL_QSPI0CLKDIS | CMU_QSPICTRL_QSPI0CLKSEL_HFXO;
while(CMU->STATUS & CMU_STATUS_QSPI0CLKENS);
// Disable DPLL if enabled
if(CMU->STATUS & CMU_STATUS_DPLLENS)
{
CMU->OSCENCMD = CMU_OSCENCMD_DPLLDIS;
while(CMU->STATUS & CMU_STATUS_DPLLENS);
}
// Disable HFXO if enabled
if(CMU->STATUS & CMU_STATUS_HFXOENS)
{
CMU->OSCENCMD = CMU_OSCENCMD_HFXODIS;
while(CMU->STATUS & CMU_STATUS_HFXOENS);
}
// Setup HFXO
CMU->HFXOCTRL = CMU_HFXOCTRL_PEAKDETMODE_AUTOCMD | CMU_HFXOCTRL_MODE_XTAL;
CMU->HFXOCTRL1 = CMU_HFXOCTRL1_PEAKDETTHR_DEFAULT;
CMU->HFXOSTEADYSTATECTRL |= CMU_HFXOSTEADYSTATECTRL_PEAKMONEN;
CMU->HFXOTIMEOUTCTRL = (7 << _CMU_HFXOTIMEOUTCTRL_PEAKDETTIMEOUT_SHIFT) | (8 << _CMU_HFXOTIMEOUTCTRL_STEADYTIMEOUT_SHIFT) | (12 << _CMU_HFXOTIMEOUTCTRL_STARTUPTIMEOUT_SHIFT);
// Enable HFXO and wait for it to be ready
CMU->OSCENCMD = CMU_OSCENCMD_HFXOEN;
while(!(CMU->STATUS & CMU_STATUS_HFXORDY));
// Switch main clock to HFXO and wait for it to be selected
CMU->HFCLKSEL = CMU_HFCLKSEL_HF_HFXO;
while((CMU->HFCLKSTATUS & _CMU_HFCLKSTATUS_SELECTED_MASK) != CMU_HFCLKSTATUS_SELECTED_HFXO);
// Calibrate HFRCO for 72MHz and enable tuning by PLL
cmu_hfrco_calib((DEVINFO->HFRCOCAL16) | CMU_HFRCOCTRL_FINETUNINGEN);
// Setup the PLL
CMU->DPLLCTRL = CMU_DPLLCTRL_REFSEL_HFXO | CMU_DPLLCTRL_AUTORECOVER | CMU_DPLLCTRL_EDGESEL_RISE | CMU_DPLLCTRL_MODE_FREQLL;
// 72MHz = 50MHz (HFXO) * 1.44 (144/100)
CMU->DPLLCTRL1 = (143 << _CMU_DPLLCTRL1_N_SHIFT) | (99 << _CMU_DPLLCTRL1_M_SHIFT); // fHFRCO = fHFXO * (N + 1) / (M + 1)
// Enable the DPLL and wait for it to be ready
CMU->OSCENCMD = CMU_OSCENCMD_DPLLEN;
while(!(CMU->STATUS & CMU_STATUS_DPLLRDY));
// Config peripherals for the new frequency (freq > 32MHz)
CMU->CTRL |= CMU_CTRL_WSHFLE;
// Set prescalers
CMU->HFPRESC = CMU_HFPRESC_HFCLKLEPRESC_DIV2 | CMU_HFPRESC_PRESC_NODIVISION;
CMU->HFBUSPRESC = 1 << _CMU_HFBUSPRESC_PRESC_SHIFT;
CMU->HFCOREPRESC = 0 << _CMU_HFCOREPRESC_PRESC_SHIFT;
CMU->HFPERPRESC = 1 << _CMU_HFPERPRESC_PRESC_SHIFT;
CMU->HFEXPPRESC = 0 << _CMU_HFEXPPRESC_PRESC_SHIFT;
CMU->HFPERPRESCB = 0 << _CMU_HFPERPRESCB_PRESC_SHIFT;
CMU->HFPERPRESCC = 1 << _CMU_HFPERPRESCC_PRESC_SHIFT;
// Enable clock to peripherals
CMU->CTRL |= CMU_CTRL_HFPERCLKEN;
// Switch main clock to HFRCO and wait for it to be selected
CMU->HFCLKSEL = CMU_HFCLKSEL_HF_HFRCO;
while((CMU->HFCLKSTATUS & _CMU_HFCLKSTATUS_SELECTED_MASK) != CMU_HFCLKSTATUS_SELECTED_HFRCO);
// LFA Clock
CMU->LFACLKSEL = CMU_LFACLKSEL_LFA_LFRCO;
// LFB Clock
CMU->LFBCLKSEL = CMU_LFBCLKSEL_LFB_LFRCO;
// LFC Clock
CMU->LFCCLKSEL = CMU_LFCCLKSEL_LFC_LFRCO;
// LFE Clock
CMU->LFECLKSEL = CMU_LFECLKSEL_LFE_ULFRCO;
}
void systick_init(void)
{
SysTick->LOAD = (72000000 / 1000) - 1;
SysTick->VAL = 0;
SysTick->CTRL = SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_CLKSOURCE_Msk;
SCB->SHP[11] = 7 << (8 - __NVIC_PRIO_BITS); // Set priority 3,1 (min)
}
void gpio_init(void)
{
CMU->HFBUSCLKEN0 |= CMU_HFBUSCLKEN0_GPIO;
// NC - Not Connected (not available in mcu package)
// NR - Not routed (no routing to pin on pcb, floating)
// NU - Not used (not currently in use)
// Port A
GPIO->P[0].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[0].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NU
| GPIO_P_MODEL_MODE1_DISABLED // NU
| GPIO_P_MODEL_MODE2_DISABLED // NU
| GPIO_P_MODEL_MODE3_DISABLED // NU
| GPIO_P_MODEL_MODE4_DISABLED // NU
| GPIO_P_MODEL_MODE5_DISABLED // NU
| GPIO_P_MODEL_MODE6_DISABLED // NU
| GPIO_P_MODEL_MODE7_DISABLED; // NC
GPIO->P[0].MODEH = GPIO_P_MODEH_MODE8_DISABLED // GPIO - MIC_ENABLE
| GPIO_P_MODEH_MODE9_DISABLED // NC
| GPIO_P_MODEH_MODE10_DISABLED // NC
| GPIO_P_MODEH_MODE11_DISABLED // NC
| GPIO_P_MODEH_MODE12_WIREDAND // LED0R
| GPIO_P_MODEH_MODE13_WIREDAND // LED0B
| GPIO_P_MODEH_MODE14_WIREDAND // LED0G
| GPIO_P_MODEH_MODE15_DISABLED; // NU
GPIO->P[0].DOUT = 0x7000; // Leds off By default
GPIO->P[0].OVTDIS = 0;
// Port B
GPIO->P[1].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[1].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
| GPIO_P_MODEL_MODE1_DISABLED // NC
| GPIO_P_MODEL_MODE2_DISABLED // NC
| GPIO_P_MODEL_MODE3_DISABLED // NU
| GPIO_P_MODEL_MODE4_DISABLED // NU
| GPIO_P_MODEL_MODE5_DISABLED // NU
| GPIO_P_MODEL_MODE6_DISABLED // NU
| GPIO_P_MODEL_MODE7_DISABLED; // MAIN_LFXTAL_P
GPIO->P[1].MODEH = GPIO_P_MODEH_MODE8_DISABLED // MAIN_LFXTAL_N
| GPIO_P_MODEH_MODE9_DISABLED // NC
| GPIO_P_MODEH_MODE10_DISABLED // NC
| GPIO_P_MODEH_MODE11_DISABLED // PDM_DAT0 - MIC_DATA
| GPIO_P_MODEH_MODE12_DISABLED // PDM_CLK - MIC_CLOCK
| GPIO_P_MODEH_MODE13_DISABLED // MAIN_HFXTAL_P
| GPIO_P_MODEH_MODE14_DISABLED // MAIN_HFXTAL_N
| GPIO_P_MODEH_MODE15_DISABLED; // NC
GPIO->P[1].DOUT = 0;
GPIO->P[1].OVTDIS = 0;
// Port C
GPIO->P[2].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (7 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[2].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
| GPIO_P_MODEL_MODE1_DISABLED // NC
| GPIO_P_MODEL_MODE2_DISABLED // NC
| GPIO_P_MODEL_MODE3_DISABLED // NC
| GPIO_P_MODEL_MODE4_DISABLED // NU
| GPIO_P_MODEL_MODE5_DISABLED // NU
| GPIO_P_MODEL_MODE6_DISABLED // NC
| GPIO_P_MODEL_MODE7_DISABLED; // NC
GPIO->P[2].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NC
| GPIO_P_MODEH_MODE9_DISABLED // NC
| GPIO_P_MODEH_MODE10_DISABLED // NC
| GPIO_P_MODEH_MODE11_DISABLED // NC
| GPIO_P_MODEH_MODE12_DISABLED // NC
| GPIO_P_MODEH_MODE13_DISABLED // NC
| GPIO_P_MODEH_MODE14_DISABLED // NC
| GPIO_P_MODEH_MODE15_DISABLED; // NC
GPIO->P[2].DOUT = 0;
GPIO->P[2].OVTDIS = 0;
// Port D
GPIO->P[3].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[3].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NU
| GPIO_P_MODEL_MODE1_DISABLED // NU
| GPIO_P_MODEL_MODE2_DISABLED // NU
| GPIO_P_MODEL_MODE3_DISABLED // NU
| GPIO_P_MODEL_MODE4_DISABLED // NU
| GPIO_P_MODEL_MODE5_INPUT // GPIO - BTN0
| GPIO_P_MODEL_MODE6_WIREDAND // LED1R
| GPIO_P_MODEL_MODE7_DISABLED; // NU
GPIO->P[3].MODEH = GPIO_P_MODEH_MODE8_INPUT // GPIO - BTN1
| GPIO_P_MODEH_MODE9_DISABLED // NC
| GPIO_P_MODEH_MODE10_DISABLED // NC
| GPIO_P_MODEH_MODE11_DISABLED // NC
| GPIO_P_MODEH_MODE12_DISABLED // NC
| GPIO_P_MODEH_MODE13_DISABLED // NC
| GPIO_P_MODEH_MODE14_DISABLED // NC
| GPIO_P_MODEH_MODE15_DISABLED; // NC
GPIO->P[3].DOUT = 0;
GPIO->P[3].OVTDIS = 0;
// Port E
GPIO->P[4].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[4].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
| GPIO_P_MODEL_MODE1_DISABLED // NC
| GPIO_P_MODEL_MODE2_DISABLED // NC
| GPIO_P_MODEL_MODE3_DISABLED // NC
| GPIO_P_MODEL_MODE4_DISABLED // NU
| GPIO_P_MODEL_MODE5_DISABLED // NU
| GPIO_P_MODEL_MODE6_DISABLED // NU
| GPIO_P_MODEL_MODE7_DISABLED; // NU
GPIO->P[4].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NU
| GPIO_P_MODEH_MODE9_DISABLED // NU
| GPIO_P_MODEH_MODE10_DISABLED // NU
| GPIO_P_MODEH_MODE11_DISABLED // NU
| GPIO_P_MODEH_MODE12_WIREDAND // LED1B
| GPIO_P_MODEH_MODE13_DISABLED // NU
| GPIO_P_MODEH_MODE14_DISABLED // NU
| GPIO_P_MODEH_MODE15_DISABLED; // NU
GPIO->P[4].DOUT = 0;
GPIO->P[4].OVTDIS = 0;
// Port F
GPIO->P[5].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
GPIO->P[5].MODEL = GPIO_P_MODEL_MODE0_PUSHPULL // SWCLK
| GPIO_P_MODEL_MODE1_PUSHPULL // SWDIO
| GPIO_P_MODEL_MODE2_PUSHPULL // SWO
| GPIO_P_MODEL_MODE3_DISABLED // NC
| GPIO_P_MODEL_MODE4_DISABLED // NC
| GPIO_P_MODEL_MODE5_DISABLED // NU
| GPIO_P_MODEL_MODE6_DISABLED // NC
| GPIO_P_MODEL_MODE7_DISABLED; // NC
GPIO->P[5].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NC
| GPIO_P_MODEH_MODE9_DISABLED // NC
| GPIO_P_MODEH_MODE10_DISABLED // USB N
| GPIO_P_MODEH_MODE11_DISABLED // USB P
| GPIO_P_MODEH_MODE12_WIREDAND // LED1G
| GPIO_P_MODEH_MODE13_DISABLED // NC
| GPIO_P_MODEH_MODE14_DISABLED // NC
| GPIO_P_MODEH_MODE15_DISABLED; // NC
GPIO->P[5].DOUT = 0;
GPIO->P[5].OVTDIS = 0;
// Debugger Route
GPIO->ROUTEPEN &= ~(GPIO_ROUTEPEN_TDIPEN | GPIO_ROUTEPEN_TDOPEN); // Disable JTAG
GPIO->ROUTEPEN |= GPIO_ROUTEPEN_SWVPEN; // Enable SWO
GPIO->ROUTELOC0 = GPIO_ROUTELOC0_SWVLOC_LOC0; // SWO on PF2
// External interrupts
GPIO->EXTIPSELL = GPIO_EXTIPSELL_EXTIPSEL0_PORTE // NU
| GPIO_EXTIPSELL_EXTIPSEL1_PORTB // NU
| GPIO_EXTIPSELL_EXTIPSEL2_PORTB // NU
| GPIO_EXTIPSELL_EXTIPSEL3_PORTB // NU
| GPIO_EXTIPSELL_EXTIPSEL4_PORTA // NU
| GPIO_EXTIPSELL_EXTIPSEL5_PORTA // NU
| GPIO_EXTIPSELL_EXTIPSEL6_PORTC // NU
| GPIO_EXTIPSELL_EXTIPSEL7_PORTC; // NU
GPIO->EXTIPSELH = GPIO_EXTIPSELH_EXTIPSEL8_PORTA // NU
| GPIO_EXTIPSELH_EXTIPSEL9_PORTE // NU
| GPIO_EXTIPSELH_EXTIPSEL10_PORTF // NU
| GPIO_EXTIPSELH_EXTIPSEL11_PORTA // NU
| GPIO_EXTIPSELH_EXTIPSEL12_PORTA // NU
| GPIO_EXTIPSELH_EXTIPSEL13_PORTE // NU
| GPIO_EXTIPSELH_EXTIPSEL14_PORTF // NU
| GPIO_EXTIPSELH_EXTIPSEL15_PORTA; // NU
GPIO->EXTIPINSELL = GPIO_EXTIPINSELL_EXTIPINSEL0_PIN3 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL1_PIN1 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL2_PIN2 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL3_PIN3 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL4_PIN6 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL5_PIN7 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL6_PIN4 // NU
| GPIO_EXTIPINSELL_EXTIPINSEL7_PIN7; // NU
GPIO->EXTIPINSELH = GPIO_EXTIPINSELH_EXTIPINSEL8_PIN8 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL9_PIN9 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL10_PIN11 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL11_PIN8 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL12_PIN13 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL13_PIN15 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL14_PIN12 // NU
| GPIO_EXTIPINSELH_EXTIPINSEL15_PIN12; // NU
}
/*--------------------------------------------------------------------*/
/* Board Init */
/*--------------------------------------------------------------------*/
void board_init(void)
{
emu_dcdc_init(1800.f, 50.f, 100.f, 0.f); // Init DC-DC converter (1.8 V, 50 mA active, 100 uA sleep, 0 mA reverse limit)
emu_init(0);
emu_reg_init(3300.f); // set output regulator to 3.3V
cmu_hfxo_startup_calib(0x200, 0x145); // Config HFXO Startup for 1280 uA, 36 pF (18 pF + 2 pF CLOAD)
cmu_hfxo_steady_calib(0x009, 0x145); // Config HFXO Steady for 12 uA, 36 pF (18 pF + 2 pF CLOAD)
cmu_init(); // Init Clock Management Unit
cmu_ushfrco_calib(1, DEVINFO->USHFRCOCAL13); // Enable and calibrate USHFRCO for 48 MHz
cmu_auxhfrco_calib(1, DEVINFO->AUXHFRCOCAL11); // Enable and calibrate AUXHFRCO for 32 MHz
CMU->USBCRCTRL = CMU_USBCRCTRL_USBCREN; // enable USB clock recovery
CMU->USBCTRL = CMU_USBCTRL_USBCLKSEL_USHFRCO | CMU_USBCTRL_USBCLKEN; // select USHFRCO as USB Phy clock source and enable it
CMU->HFBUSCLKEN0 |= CMU_HFBUSCLKEN0_USB; // enable USB peripheral clock
systick_init(); // Init system tick
gpio_init(); // Init IOs
}
/*--------------------------------------------------------------------*/
/* Board porting API */
/*--------------------------------------------------------------------*/
void board_led_write(bool state)
{
// Combine red and blue for pink Because it looks good :)
GPIO->P[LED_PORT].DOUT = (GPIO->P[LED_PORT].DOUT & ~((1 << LED_PIN_R) | (1 << LED_PIN_B))) | (state << LED_PIN_R) | (state << LED_PIN_B);
}
uint32_t board_button_read(void)
{
return !!(GPIO->P[BUTTON_PORT].DIN & (1 << BUTTON_PIN));
}
int board_uart_read(uint8_t* buf, int len)
{
(void) buf; (void) len;
return 0;
}
int board_uart_write(void const * buf, int len)
{
(void) buf; (void) len;
return 0;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void)
{
system_ticks++;
}
uint32_t board_millis(void)
{
return system_ticks;
}
#endif
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(char *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */