boochow

/* Private function prototypes -----------------------------------------------*/
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
   set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */

/**

boochow

import mcu
# set gpio47 to output mode
mcu.mem32[int("0x20200010")] = 2**21
# set gpio47 to L (LED on)
mcu.mem32[int("0x2020002C")] = 2**15
# set gpio47 to H (LED off)
mcu.mem32[int("0x20200020")] = 2**15

boochow

import mcu, utime
# set gpio47 to output mode
mcu.mem32[mcu.GPFSEL4] = 2**21
while(1):
    mcu.mem32[mcu.GPCLR1] = 2**15
    utime.sleep_ms(300)
    mcu.mem32[mcu.GPSET1] = 2**15
    utime.sleep_ms(300)

boochow

pi@pi-zero-w:~ $ echo 4 > /sys/class/gpio/export
pi@pi-zero-w:~ $ ls /sys/class/gpio/
export  gpio4  gpiochip0  unexport
pi@pi-zero-w:~ $ echo out > /sys/class/gpio/gpio4/direction
pi@pi-zero-w:~ $ echo 1 > /sys/class/gpio/gpio4/value
pi@pi-zero-w:~ $ echo 0 > /sys/class/gpio/gpio4/value
pi@pi-zero-w:~ $ echo 4 > /sys/class/gpio/unexport
pi@pi-zero-w:~ $ ls /sys/class/gpio/
export  gpiochip0  unexport
pi@pi-zero-w:~ $

boochow

pi@pi-zero-w:~$ i2cdetect -a 1
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-1.
I will probe address range 0x00-0x7f.
Continue? [Y/n]
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --

boochow

#!/bin/sh
i2cset -y 1 0x3c 0x00 0xae # display off
i2cset -y 1 0x3c 0x00 0xd5 # clockdiv
i2cset -y 1 0x3c 0x00 0x80
i2cset -y 1 0x3c 0x00 0xa8 # multiplex
i2cset -y 1 0x3c 0x00 0x3f
i2cset -y 1 0x3c 0x00 0xd3 # offset
i2cset -y 1 0x3c 0x00 0x00
i2cset -y 1 0x3c 0x00 0x40 # startline
i2cset -y 1 0x3c 0x00 0x8d # charge pump

boochow

pi@pi-zero-w:~$ raspi-gpio get
BANK0 (GPIO 0 to 27):
GPIO 0: level=1 fsel=0 func=INPUT
GPIO 1: level=1 fsel=0 func=INPUT
GPIO 2: level=1 fsel=4 alt=0 func=SDA1
GPIO 3: level=1 fsel=4 alt=0 func=SCL1
GPIO 4: level=1 fsel=0 func=INPUT
GPIO 5: level=1 fsel=0 func=INPUT
GPIO 6: level=1 fsel=0 func=INPUT
GPIO 7: level=1 fsel=1 func=OUTPUT

boochow

pi@pi-zero-w:~$ gpio mode 1 pwm
pi@pi-zero-w:~$ gpio pwm-ms
pi@pi-zero-w:~$ gpio pwmc 192
pi@pi-zero-w:~$ gpio pwmr 2000
pi@pi-zero-w:~$ gpio pwm 1 150
pi@pi-zero-w:~$ gpio pwm 1 100
pi@pi-zero-w:~$ gpio pwm 1 200
pi@pi-zero-w:~$

boochow

  // initialize usb
  UsbInitialise();

  while (1) {
      unsigned int kbd_addr;
      unsigned int keys[6];
      unsigned int key;

      if (kbd_addr == 0) {
          // Is there a keyboard ?

boochow

import math
hid = pyb.USB_HID()
def osc(n, d):
  for i in range(n):
    hid.send((0, int(20 * math.sin(i / 10)), 0, 0))
    pyb.delay(d)

# osc(100, 50)