356 lines
12 KiB
C
356 lines
12 KiB
C
/**
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*******************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* All rights reserved.
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*
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* This software component is licensed by WCH under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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*******************************************************************************
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*/
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#include "pins_arduino.h"
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#include "mik32_hal_adc.h"
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#include "wiring_analog.h"
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#define SPI0_SWITCH_PORT GPIO_1
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#define SPI0_SWITCH_PIN GPIO_PIN_10
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#define SPI0_NSS_IN_PORT GPIO_0
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#define SPI0_NSS_IN_PIN GPIO_PIN_3
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#define SPI1_SWITCH_PORT GPIO_1
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#define SPI1_SWITCH_PIN GPIO_PIN_6
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#define SPI1_NSS_IN_PORT GPIO_1
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#define SPI1_NSS_IN_PIN GPIO_PIN_3
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bool spi0NssPinIsBlocked = false;
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bool spi1NssPinIsBlocked = false;
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// list of pin numbers from both ports with pins inside the port
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const HAL_PinsTypeDef digitalPinToGpioPinArray[PINS_COMMON_QTY] =
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{
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GPIO_PIN_5, // D0
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GPIO_PIN_6, // D1
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GPIO_PIN_10,// D2
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GPIO_PIN_0, // D3
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GPIO_PIN_8, // D4
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GPIO_PIN_1, // D5
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GPIO_PIN_2, // D6
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GPIO_PIN_8, // D7
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GPIO_PIN_9, // D8
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GPIO_PIN_3, // D9
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GPIO_PIN_3, // D10
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GPIO_PIN_1, // D11
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GPIO_PIN_0, // D12
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GPIO_PIN_2, // D13
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GPIO_PIN_5, // D14/A0
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GPIO_PIN_7, // D15/A1
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GPIO_PIN_4, // D16/A2
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GPIO_PIN_7, // D17/A3
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GPIO_PIN_12,// D18
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GPIO_PIN_13,// D19
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GPIO_PIN_9, // A4 (board pin 20)
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GPIO_PIN_9, // A5 (board pin 21)
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GPIO_PIN_7, // LED(pin 22)
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GPIO_PIN_6 // BTN(pin 23)
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};
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// determines the address of the port by the board pin number to which this pin belongs on the MCU
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__attribute__((noinline, section(".ram_text"))) GPIO_TypeDef* digitalPinToPort(uint32_t digPinNumber)
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{
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if (digPinNumber >= pinCommonQty())
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{
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ErrorMsgHandler("digitalPinToPort(): pin number exceeds the total number of pins");
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return NULL;
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}
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// port 2 - led and button
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if (digPinNumber == LED_BUILTIN || digPinNumber == BTN_BUILTIN)
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return GPIO_2;
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// port 1 - board pins 7, 8, 10...13, 14(А0), 15(А1), 18,19
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else if (digPinNumber == 7 || digPinNumber == 8 || (digPinNumber >= 10 && digPinNumber <= 15)
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|| digPinNumber == 18 || digPinNumber == 19 || (digPinNumber == 9 && spi0NssPinIsBlocked)) // 10 pieces
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return GPIO_1;
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// port 0 - board pins 0...6, 9, 16(A2), 17(A3), 20(A4), 21(A5)
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else
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return GPIO_0;
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}
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// determines the pin address inside the port by the board pin number
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__attribute__((noinline, section(".ram_text"))) HAL_PinsTypeDef digitalPinToBitMask(uint32_t digPinNumber)
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{
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if (digPinNumber >= pinCommonQty())
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{
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ErrorMsgHandler("digitalPinToBitMask(): pin number exceeds the total number of pins");
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return NOT_A_PIN;
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}
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// if spi is on default pin NSS_IN is needed for spi, board pin is replaced to pin NSS_OUT
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if ((digPinNumber == 10) && spi1NssPinIsBlocked)
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return SPI1_NSS_OUT_PIN;
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else if ((digPinNumber == 9) && spi0NssPinIsBlocked)
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return SPI0_NSS_OUT_PIN;
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else
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return digitalPinToGpioPinArray[digPinNumber];
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}
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// the function returns a reference to the OUTPUT address of the GPIO register
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volatile uint32_t* portOutputRegister(GPIO_TypeDef* GPIO_x)
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{
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return &GPIO_x->OUTPUT_;
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}
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// the function returns a reference to the STATE address of the GPIO register
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volatile uint32_t* portInputRegister(GPIO_TypeDef* GPIO_x)
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{
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return &GPIO_x->STATE;
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}
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// the function initializes additional MCU pins depending on the specified pin number
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#define SELA45_PORT GPIO_1
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#define SELA45_PIN GPIO_PIN_15
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static bool selaSwitchIsInited = false;
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void additionalPinsInit(uint32_t PinNumber)
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{
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if (!selaSwitchIsInited)
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{
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HAL_GPIO_PinConfig(SELA45_PORT, SELA45_PIN, HAL_GPIO_MODE_GPIO_OUTPUT, HAL_GPIO_PULL_NONE, HAL_GPIO_DS_2MA);
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selaSwitchIsInited = true;
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}
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// if we use pin A5, we need to set SELA45 to 1 to switch the output from A4 to A5
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if (PinNumber == A5)
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HAL_GPIO_WritePin(SELA45_PORT, SELA45_PIN, GPIO_PIN_HIGH);
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else if(PinNumber == A4)
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// return the switch to A4 in case A5 was previously read
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HAL_GPIO_WritePin(SELA45_PORT, SELA45_PIN, GPIO_PIN_LOW);
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}
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// ---------------------- ADC ---------------------- //
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// determines the ADC channel number by the board pin number
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uint32_t analogInputToChannelNumber(uint32_t PinNumber)
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{
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uint32_t adcChannel = 0;
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// if get a value 0...5 instead of A0...A5
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if (PinNumber < 4) PinNumber += 14;
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else if (PinNumber < 6) PinNumber += 16;
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switch (PinNumber)
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{
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case PIN_A0:
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adcChannel = ADC_CHANNEL0;
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break;
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case PIN_A1:
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adcChannel = ADC_CHANNEL1;
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break;
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case PIN_A2:
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adcChannel = ADC_CHANNEL3;
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break;
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case PIN_A3:
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adcChannel = ADC_CHANNEL4;
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break;
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case PIN_A4:
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case PIN_A5:
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adcChannel = ADC_CHANNEL5;
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break;
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default:
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adcChannel = NC;
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}
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return adcChannel;
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}
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// ---------------------- PWM ---------------------- //
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// return true if digitalPin configured as pwm
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__attribute__((noinline, section(".ram_text"))) bool digitalPinPwmIsOn(uint8_t digitalPin)
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{
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if (digitalPinHasPWM(digitalPin))
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{
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uint8_t config = 0;
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uint8_t pinShift = PIN_MASK_TO_PIN_NUMBER(digitalPinToBitMask(digitalPin));
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if (PWM_PIN_TO_PORT_NUMBER(digitalPin) == 0)
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config = PIN_GET_PAD_CONFIG(PORT_0_CFG, pinShift);
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else
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config = PIN_GET_PAD_CONFIG(PORT_1_CFG, pinShift);
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if (config == 2)
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return true;
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}
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return false;
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}
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// function is used only if digitalPinHasPWM() is true
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TIMER32_TypeDef* pwmPinToTimer(uint32_t digPinNumber)
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{
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TIMER32_TypeDef* timerNum = NULL;
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// timer 1
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if (digPinNumber == 3 || digPinNumber == 5 || digPinNumber == 6 || digPinNumber == 9)
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timerNum = TIMER32_1;
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// timer 2
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else if (digPinNumber == 10 || digPinNumber == 11 || digPinNumber == 12 || digPinNumber == 13)
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timerNum = TIMER32_2;
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return timerNum;
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}
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// function is used only if digitalPinHasPWM() is true
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HAL_TIMER32_CHANNEL_IndexTypeDef pwmPinToTimerChannel(uint32_t digPinNumber)
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{
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HAL_TIMER32_CHANNEL_IndexTypeDef channel = 0;
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if (digPinNumber == 3 || digPinNumber == 12) channel = TIMER32_CHANNEL_0;
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else if (digPinNumber == 5 || digPinNumber == 11) channel = TIMER32_CHANNEL_1;
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else if (digPinNumber == 6 || digPinNumber == 13) channel = TIMER32_CHANNEL_2;
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else if (digPinNumber == 9 || digPinNumber == 10) channel = TIMER32_CHANNEL_3;
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return channel;
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}
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// ---------------------- interrupts ---------------------- //
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// interrupt table is stored in ram to improve performance
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// index = interrupt number. In each row {digitalPinNumber, IntLineValue, IntMuxValue}
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uint8_t interruptInfo[EXTERNAL_INTERRUPTS_QTY][3] =
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{
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{ 2, GPIO_LINE_2, GPIO_MUX_LINE_2_PORT0_10}, // INT0
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{ 3, GPIO_LINE_0, GPIO_MUX_LINE_0_PORT0_0}, // INT1
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{ 4, GPIO_LINE_4, GPIO_MUX_LINE_4_PORT0_8}, // INT2
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{ 5, GPIO_LINE_1, GPIO_MUX_LINE_1_PORT0_1}, // INT3
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{ 8, GPIO_LINE_5, GPIO_MUX_LINE_5_PORT1_9}, // INT4
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{ 9, GPIO_LINE_3, GPIO_MUX_LINE_3_PORT0_3}, // INT5
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{ A1, GPIO_LINE_7, GPIO_MUX_LINE_7_PORT1_7}, // INT6
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{BTN_BUILTIN, GPIO_LINE_6, GPIO_MUX_LINE_6_PORT2_6}, // INT7 (button)
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};
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int8_t digitalPinToGpioIntMux(uint8_t digPinNumber)
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{
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for (uint8_t i = 0; i < EXTERNAL_INTERRUPTS_QTY; i++)
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{
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if (interruptInfo[i][0] == digPinNumber)
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return interruptInfo[i][2];
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}
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return NOT_AN_INTERRUPT;
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}
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int8_t digitalPinToGpioIntLine(uint8_t digPinNumber)
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{
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for (uint8_t i = 0; i < EXTERNAL_INTERRUPTS_QTY; i++)
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{
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if (interruptInfo[i][0] == digPinNumber)
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return interruptInfo[i][1];
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}
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return NOT_AN_INTERRUPT;
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}
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int8_t gpioIntLineToInterrupt(uint32_t gpioIntLine)
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{
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for (uint8_t i = 0; i < EXTERNAL_INTERRUPTS_QTY; i++)
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{
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if (interruptInfo[i][1] == gpioIntLine)
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return i;
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}
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return NOT_AN_INTERRUPT;
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}
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int8_t digitalPinToInterrupt(uint32_t digPinNumber)
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{
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for (uint8_t i = 0; i < EXTERNAL_INTERRUPTS_QTY; i++)
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{
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if (interruptInfo[i][0] == digPinNumber)
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return i;
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}
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return NOT_AN_INTERRUPT;
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}
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// ---------------------- SPI ---------------------- //
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void spi_onBegin(uint8_t spiNum)
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{
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// On Elbear Ace-Uno rev1.1.0 spi0 needs pin 0.3, spi1 needs pin 1.3 for correct work (NSS_IN).
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// This pins are connected to board digital pins D9 and D10. There is a seller on each pin which
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// replace board digital pin from NSS_IN pin to different free pin (NSS_OUT)
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// replace config from NSS_IN to NSS_OUT
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uint8_t config;
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if (spiNum == 1)
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config = PIN_GET_PAD_CONFIG(PORT_1_CFG, PIN_MASK_TO_PIN_NUMBER(SPI1_NSS_IN_PIN));
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else
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config = PIN_GET_PAD_CONFIG(PORT_0_CFG, PIN_MASK_TO_PIN_NUMBER(SPI0_NSS_IN_PIN));
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if (config == 0) // common gpio
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{
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if (spiNum == 1)
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{
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// get info from pin NSS_IN and set config to NSS_OUT
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HAL_GPIO_PinConfig(SPI1_NSS_OUT_PORT, SPI1_NSS_OUT_PIN, HAL_GPIO_GetPinDirection(SPI1_NSS_IN_PORT, SPI1_NSS_IN_PIN),
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(HAL_GPIO_PullTypeDef)PIN_GET_PAD_CONFIG(PORT_1_PUPD, PIN_MASK_TO_PIN_NUMBER(SPI1_NSS_IN_PIN)),
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HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin(SPI1_NSS_OUT_PORT, SPI1_NSS_OUT_PIN, (GPIO_PinState)GPIO_GET_PIN_STATE(SPI1_NSS_IN_PORT, PIN_MASK_TO_PIN_NUMBER(SPI1_NSS_IN_PIN)));
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// pin D10 was switched to different gpio and can be used further
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}
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else
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{
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// get info from pin NSS_IN and set config to NSS_OUT
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HAL_GPIO_PinConfig(SPI0_NSS_OUT_PORT, SPI0_NSS_OUT_PIN, HAL_GPIO_GetPinDirection(SPI0_NSS_IN_PORT, SPI0_NSS_IN_PIN),
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(HAL_GPIO_PullTypeDef)PIN_GET_PAD_CONFIG(PORT_0_PUPD, PIN_MASK_TO_PIN_NUMBER(SPI0_NSS_IN_PIN)),
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HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin(SPI0_NSS_OUT_PORT, SPI0_NSS_OUT_PIN, (GPIO_PinState)GPIO_GET_PIN_STATE(SPI0_NSS_IN_PORT, PIN_MASK_TO_PIN_NUMBER(SPI0_NSS_IN_PIN)));
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// pin D9 was switched to different gpio and can be used further
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}
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}
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else if(config == 2) // timer for pwm
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{
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// if spi NSS_IN pin was used as pwm, we need to stop timer, because another pins don't support it
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if (spiNum == 1)
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{
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analogWriteStop(10);
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ErrorMsgHandler("analogWrite(): D10 cannot be used as PWM pin while SPI is running");
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}
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else
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{
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analogWriteStop(9);
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ErrorMsgHandler("analogWrite(): D9 cannot be used as PWM pin while SPI1 is running");
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}
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}
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// switch seller to pin NSS_OUT
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if (spiNum == 1)
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{
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HAL_GPIO_PinConfig(SPI1_SWITCH_PORT, SPI1_SWITCH_PIN, HAL_GPIO_MODE_GPIO_OUTPUT, HAL_GPIO_PULL_NONE, HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin (SPI1_SWITCH_PORT, SPI1_SWITCH_PIN, GPIO_PIN_HIGH);
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spi1NssPinIsBlocked = true; // block spi pin
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}
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else
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{
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HAL_GPIO_PinConfig(SPI0_SWITCH_PORT, SPI0_SWITCH_PIN, HAL_GPIO_MODE_GPIO_OUTPUT, HAL_GPIO_PULL_NONE, HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin (SPI0_SWITCH_PORT, SPI0_SWITCH_PIN, GPIO_PIN_HIGH);
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spi0NssPinIsBlocked = true; // block spi pin
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}
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}
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void spi_onEnd(uint8_t spiNum)
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{
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// get info from pin NSS_OUT and set config to NSS_IN
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if (spiNum == 1)
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{
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HAL_GPIO_PinConfig(SPI1_NSS_IN_PORT, SPI1_NSS_IN_PIN, HAL_GPIO_GetPinDirection(SPI1_NSS_OUT_PORT, SPI1_NSS_OUT_PIN),
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(HAL_GPIO_PullTypeDef)PIN_GET_PAD_CONFIG(PORT_1_PUPD, PIN_MASK_TO_PIN_NUMBER(SPI1_NSS_OUT_PIN)), HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin (SPI1_NSS_IN_PORT, SPI1_NSS_IN_PIN,
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(GPIO_PinState)GPIO_GET_PIN_STATE(SPI1_NSS_OUT_PORT, PIN_MASK_TO_PIN_NUMBER(SPI1_NSS_OUT_PIN)));
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// switch seller back to NSS_IN
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HAL_GPIO_WritePin(SPI1_SWITCH_PORT, SPI1_SWITCH_PIN, GPIO_PIN_LOW);
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spi1NssPinIsBlocked = false; // unblock spi pin
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}
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else
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{
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HAL_GPIO_PinConfig(SPI0_NSS_IN_PORT, SPI0_NSS_IN_PIN, HAL_GPIO_GetPinDirection(SPI0_NSS_OUT_PORT, SPI0_NSS_OUT_PIN),
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(HAL_GPIO_PullTypeDef)PIN_GET_PAD_CONFIG(PORT_1_PUPD, PIN_MASK_TO_PIN_NUMBER(SPI0_NSS_OUT_PIN)), HAL_GPIO_DS_2MA);
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HAL_GPIO_WritePin (SPI0_NSS_IN_PORT, SPI0_NSS_IN_PIN,
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(GPIO_PinState)GPIO_GET_PIN_STATE(SPI0_NSS_OUT_PORT, PIN_MASK_TO_PIN_NUMBER(SPI0_NSS_OUT_PIN)));
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// switch seller back to NSS_IN
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HAL_GPIO_WritePin(SPI0_SWITCH_PORT, SPI0_SWITCH_PIN, GPIO_PIN_LOW);
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spi0NssPinIsBlocked = false; // unblock spi pin
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}
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} |