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package com.diozero.internal.board.chip;
/*
* #%L
* Organisation: diozero
* Project: diozero - Core
* Filename: ChipBoardInfoProvider.java
*
* This file is part of the diozero project. More information about this project
* can be found at https://www.diozero.com/.
* %%
* Copyright (C) 2016 - 2021 diozero
* %%
* 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.
* #L%
*/
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.tinylog.Logger;
import com.diozero.api.PinInfo;
import com.diozero.internal.board.GenericLinuxArmBoardInfo;
import com.diozero.internal.spi.BoardInfoProvider;
import com.diozero.internal.spi.MmapGpioInterface;
import com.diozero.sbc.BoardInfo;
import com.diozero.sbc.LocalSystemInfo;
public class ChipBoardInfoProvider implements BoardInfoProvider {
public static final String MAKE = "Next Thing Company";
public static final String MODEL_CHIP = "CHIP";
public static final String MODEL_CHIP_PRO = "CHIP Pro";
private static final float ADC_VREF = 1.750f;
@Override
public BoardInfo lookup(LocalSystemInfo sysInfo) {
if (sysInfo.getHardware() != null && sysInfo.getHardware().startsWith("Allwinner sun4i/sun5i")) {
if (sysInfo.getMemoryKb() != null && sysInfo.getMemoryKb().intValue() < 500_000) {
return new CHIPProBoardInfo();
}
return new CHIPBoardInfo();
}
return null;
}
public static final class CHIPBoardInfo extends GenericLinuxArmBoardInfo {
public static final String U13_HEADER = "U13";
public static final String U14_HEADER = "U14";
private static final int MEMORY = 512_000;
private int xioGpioOffset = 0;
private boolean xioGpioOffsetLoaded;
public CHIPBoardInfo() {
super(MAKE, MODEL_CHIP, MEMORY, ADC_VREF);
}
@Override
public void populateBoardPinInfo() {
// FIXME Externalise this to a file
// http://www.chip-community.org/index.php/GPIO_Info#Interrupts
// Not all gpio pins support interrupts. Whether a pin supports
// interrupts can be seen by the presence of an "edge" file (e.g.
// /sys/class/gpio//edge) after exporting the pin. The
// following pins support interrupts: XIO-P0 thru XIO-P7, AP-EINT1,
// AP-EINT3, CSIPCK, CSICK.
// The XIO pin interrupts are for state changes only and may miss
// edges. The PCF8574 I/O extender only provides an interrupt on pin
// change and the driver then compares the current state of the
// inputs with the last seen state to determine which pin changed.
// This means that it can miss short pulses. In addition, the
// current driver does not respect the direction of change and
// instead delivers a signal on every change, meaning that setting
// the edge detection to "rising" or "falling" acts as if it were
// set to "both".
// Map the XIO pins. Note these are connected via a PCF8574 GPIO
// expansion board that does not handle interrupts reliably.
int gpio = 0;
int pin = 13;
for (gpio = 0; gpio < 8; gpio++) {
addGpioPinInfo(U14_HEADER, gpio, pin++, PinInfo.DIGITAL_IN_OUT);
}
/*-
* To enable:
* sudo fdtput -t s /boot/sun5i-r8-chip.dtb "/soc@01c00000/pwm@01c20e00" "status" "okay"
* sudo fdtput -t s /boot/sun5i-r8-chip.dtb "/soc@01c00000/pwm@01c20e00" "pinctrl-names" "default"
* sudo fdtput -t x /boot/sun5i-r8-chip.dtb "/soc@01c00000/pwm@01c20e00" "pinctrl-0" "0x67" # 0x63 for older v4.4
*/
addPwmPinInfo(U13_HEADER, 34, "PWM0", 18, 0, 0, PinInfo.DIGITAL_IN_OUT_PWM);
// LCD-D2-D7
gpio = 98;
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D2", 17, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D3", 20, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D4", 19, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D5", 22, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D6", 21, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D7", 24, PinInfo.DIGITAL_IN_OUT);
// LCD-D10-D15
gpio = 106;
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D10", 23, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D11", 26, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D12", 25, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D13", 28, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D14", 27, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D15", 30, PinInfo.DIGITAL_IN_OUT);
// LCD-D18-D23
gpio = 114;
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D18", 29, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D19", 32, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D20", 31, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D21", 34, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D22", 33, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, gpio++, "LCD-D23", 36, PinInfo.DIGITAL_IN_OUT);
// LCD-CLK, LCD-VSYNC, LCD-HSYNC
pin = 36;
addGpioPinInfo(U13_HEADER, 120, "LCD-CLK", pin++, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, 122, "LCD-VSYNC", pin++, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U13_HEADER, 123, "LCD-HSYNC", pin++, PinInfo.DIGITAL_IN_OUT);
// UART1
addGpioPinInfo(U14_HEADER, 195, "UART1-TX", 3, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U14_HEADER, 196, "UART1-RX", 5, PinInfo.DIGITAL_IN_OUT);
// AP-EINT
pin = 23;
addGpioPinInfo(U14_HEADER, 193, "AP-EINT1", pin++, PinInfo.DIGITAL_IN_OUT);
addGpioPinInfo(U14_HEADER, 35, "AP-EINT3", pin++, PinInfo.DIGITAL_IN_OUT);
// I2C / SPI
pin = 25;
addGpioPinInfo(U14_HEADER, 50, "TWI2-SDA", pin++, PinInfo.DIGITAL_IN_OUT); // I2C2-SDA
addGpioPinInfo(U14_HEADER, 49, "TWI2-SCK", pin++, PinInfo.DIGITAL_IN_OUT); // I2C2-SCL
addGpioPinInfo(U14_HEADER, 128, "CSIPCK", pin++, PinInfo.DIGITAL_IN_OUT); // SPI-CS0
addGpioPinInfo(U14_HEADER, 129, "CSICK", pin++, PinInfo.DIGITAL_IN_OUT); // SPI-CLK
addGpioPinInfo(U14_HEADER, 130, "CSIHSYNC", pin++, PinInfo.DIGITAL_IN_OUT); // SPI-MOSI
addGpioPinInfo(U14_HEADER, 131, "CSIVSYNC", pin++, PinInfo.DIGITAL_IN_OUT); // SPI-MISO
// CSID0-7
gpio = 132;
for (int csid = 0; csid < 8; csid++) {
addGpioPinInfo(U14_HEADER, gpio + csid, "CSID" + csid, 31 + csid, PinInfo.DIGITAL_IN_OUT);
}
// LRADC
addAdcPinInfo(U14_HEADER, 0, "LRADC", 11);
// Add other pins
pin = 1;
addGeneralPinInfo(U13_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U13_HEADER, pin++, "CHG-IN 5V");
addGeneralPinInfo(U13_HEADER, pin++, PinInfo.VCC_5V);
addGeneralPinInfo(U13_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U13_HEADER, pin++, PinInfo.VCC_3V3);
addGeneralPinInfo(U13_HEADER, pin++, "TS");
addGeneralPinInfo(U13_HEADER, pin++, "VCC-1V8");
addGeneralPinInfo(U13_HEADER, pin++, "Bat");
pin++;
addGeneralPinInfo(U13_HEADER, pin++, "PWROn");
pin++;
addGeneralPinInfo(U13_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U13_HEADER, pin++, "X1");
addGeneralPinInfo(U13_HEADER, pin++, "X2");
addGeneralPinInfo(U13_HEADER, pin++, "Y1");
addGeneralPinInfo(U13_HEADER, pin++, "Y2");
addGeneralPinInfo(U13_HEADER, 39, PinInfo.GROUND);
pin = 1;
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.VCC_5V);
pin++;
addGeneralPinInfo(U14_HEADER, pin++, "HPL");
pin++;
addGeneralPinInfo(U14_HEADER, pin++, "HPCOM");
addGeneralPinInfo(U14_HEADER, pin++, "FEL");
addGeneralPinInfo(U14_HEADER, pin++, "HPR");
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.VCC_3V3);
addGeneralPinInfo(U14_HEADER, pin++, "MICM");
pin++;
addGeneralPinInfo(U14_HEADER, pin++, "MICINT");
pin = 21;
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.GROUND);
pin = 39;
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.GROUND);
addGeneralPinInfo(U14_HEADER, pin++, PinInfo.GROUND);
}
@Override
public int mapToSysFsGpioNumber(int gpio) {
loadXioGpioOffset();
return gpio < 8 ? xioGpioOffset + gpio : gpio;
}
@Override
public MmapGpioInterface createMmapGpio() {
return new ChipMmapGpio();
}
private synchronized void loadXioGpioOffset() {
if (!xioGpioOffsetLoaded) {
// Determine the XIO GPIO base
Path gpio_sysfs_dir = Paths.get("/sys/class/gpio");
// FIXME Treat as a stream
try (DirectoryStream dirs = Files.newDirectoryStream(gpio_sysfs_dir, "gpiochip*")) {
for (Path p : dirs) {
if (Files.lines(p.resolve("label")).filter(line -> line.equals("pcf8574a")).count() > 0) {
String dir_name = p.getFileName().toString();
xioGpioOffset = Integer.parseInt(dir_name.replace("gpiochip", ""));
break;
}
/*-
try (BufferedReader reader = new BufferedReader(new FileReader(p.resolve("label").toFile()))) {
if (reader.readLine().equals("pcf8574a")) {
String dir_name = p.getFileName().toString();
xioGpioOffset = Integer.parseInt(dir_name.replace("gpiochip", ""));
break;
}
}
*/
}
Logger.debug("xioGpioOffset: {}", Integer.valueOf(xioGpioOffset));
} catch (IOException e) {
Logger.warn(e, "Unable to determine XIO GPIO offset: {}", e);
}
xioGpioOffsetLoaded = true;
}
}
}
public static final class CHIPProBoardInfo extends GenericLinuxArmBoardInfo {
private static final int MEMORY = 256;
public CHIPProBoardInfo() {
super(MAKE, MODEL_CHIP_PRO, MEMORY, ADC_VREF);
}
@Override
public void populateBoardPinInfo() {
// https://docs.getchip.com/chip_pro.html#pin-descriptions
// Look at the letter that follows the "P", in this case it's "E".
// Starting with A = 0, count up in the alphabet until you arrive at
// "E" and that is the letter index. For example, E=4. Multiply the
// letter index by 32, then add the number that follows "PE":
// (4*32)+4 = 132
// A=0, B=1, C=2, D=3, E=4, F=5, G=6
// PE0(128)/PE1(129)/PE2(130)/PG0(192)/PG1(193)/PG2(194) are for input only.
// PWM 0 & 1
int pin = 9;
addPwmPinInfo(34, "PWM0", pin++, 0, 0, PinInfo.DIGITAL_IN_OUT_PWM); // PB2
addPwmPinInfo(205, "PWM1", pin++, 0, 1, PinInfo.DIGITAL_IN_OUT_PWM); // PG13
// TWI1, UART2
int gpio = 47;
addGpioPinInfo(gpio++, "TWI1-SCK", pin++, PinInfo.DIGITAL_IN_OUT); // PB15
addGpioPinInfo(gpio++, "TWI1-SDA", pin++, PinInfo.DIGITAL_IN_OUT); // PB16
gpio = 98;
addGpioPinInfo(gpio++, "UART2-TX", pin++, PinInfo.DIGITAL_IN_OUT); // PD2
addGpioPinInfo(gpio++, "UART2-RX", pin++, PinInfo.DIGITAL_IN_OUT); // PD3
addGpioPinInfo(gpio++, "UART2-CTS", pin++, PinInfo.DIGITAL_IN_OUT); // PD4
addGpioPinInfo(gpio++, "UART2-RTS", pin++, PinInfo.DIGITAL_IN_OUT); // PD5
// I2S
gpio = 37;
pin = 21;
addGpioPinInfo(gpio++, "I2S-MCLK", pin++, PinInfo.DIGITAL_IN_OUT); // PB5
addGpioPinInfo(gpio++, "I2S-BCLK", pin++, PinInfo.DIGITAL_IN_OUT); // PB6
addGpioPinInfo(gpio++, "I2S-LCLK", pin++, PinInfo.DIGITAL_IN_OUT); // PB7
addGpioPinInfo(gpio++, "I2S-DO", pin++, PinInfo.DIGITAL_IN_OUT); // PB8
addGpioPinInfo(gpio++, "I2S-DI", pin++, PinInfo.DIGITAL_IN_OUT); // PB9
// UART1
gpio = 195;
pin = 44;
addGpioPinInfo(gpio++, "UART1-TX", pin--, PinInfo.DIGITAL_IN_OUT); // PG3
addGpioPinInfo(gpio++, "UART1-RX", pin--, PinInfo.DIGITAL_IN_OUT); // PG4
// LRADC
addAdcPinInfo(0, "LRADC0", pin--);
// SPI2
gpio = 128;
// PE0/PE1/PE2 are for input only
addGpioPinInfo(gpio++, "CSIPCK", pin--, PinInfo.DIGITAL_IN); // PE0
addGpioPinInfo(gpio++, "CSIMCLK", pin--, PinInfo.DIGITAL_IN); // PE1
addGpioPinInfo(gpio++, "CSIHSYNC", pin--, PinInfo.DIGITAL_IN); // PE2
addGpioPinInfo(gpio++, "CSIVSYNC", pin--, PinInfo.DIGITAL_IN_OUT); // PE3
// CSID0-7
gpio = 132;
for (int i = 0; i < 8; i++) {
addGpioPinInfo(gpio + i, "CSID" + i, pin--, PinInfo.DIGITAL_IN_OUT); // PE4-11
}
}
}
}
