SSD1306 code on ESP32 master branch firmware from https://gi

SSD1306 code on ESP32 master branch firmware from https://github.com/micropython/micropython-esp32.git
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Executing esp-idf monitor...
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MONITOR
--- idf_monitor on /dev/ttyUSB0 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0008,len:8
load:0x3fff0010,len:3404
ho 0 tail 12 room 4
load:0x40078000,len:9488
load:0x40080000,len:252
0x40080000: _iram_start at ??:?

entry 0x40080034
0x40080034: _iram_start at ??:?

I (1397) cpu_start: Pro cpu up.
I (1397) cpu_start: Single core mode
I (1399) heap_init: Initializing. RAM available for dynamic allocation:
I (1410) heap_init: At 3FFAE2A0 len 00001D60 (7 KiB): DRAM
I (1429) heap_init: At 3FFD4FD8 len 0000B028 (44 KiB): DRAM
I (1448) heap_init: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM
I (1468) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (1488) heap_init: At 400920A0 len 0000DF60 (55 KiB): IRAM
I (1507) cpu_start: Pro cpu start user code
I (1568) cpu_start: Starting scheduler on PRO CPU.
OSError: [Errno 2] ENOENT
MicroPython v1.9.1-477-g75ead22 on 2017-08-30; ESP32 module with ESP32
Type "help()" for more information.
#######################################################################

>>> import machine
>>> from ssd1306 import SSD1306_SPI, SSD1306_I2C
>>> WIDTH = const(128)
>>> HEIGHT = const (64)
>>> pdc = machine.Pin(22, machine.Pin.OUT)
>>> pcs = machine.Pin(21, machine.Pin.OUT)
>>> prst = machine.Pin(5, machine.Pin.OUT)
>>> sck_pin = machine.Pin(18, machine.Pin.OUT)
>>> mosi_pin = machine.Pin(23, machine.Pin.IN)
>>> miso_pin = machine.Pin(19, machine.Pin.OUT)
>>> spi = machine.SPI(1,baudrate=1000000, sck=sck_pin, mosi=mosi_pin, miso=miso_pin)
>>> ssd = SSD1306_SPI(WIDTH, HEIGHT, spi, pdc, prst, pcs)
>>> import freesans20
>>> from writer import Writer
>>> wri2 = Writer(ssd, freesans20, verbose=True)
Orientation: horiz Reversal: False
>>> Writer.set_clip(True, True)
>>> Writer.set_textpos(0, 0)
>>> wri2.printstring('Tuesday\n')
>>> ssd.show()

###
OLED display works fine and shows "Tuesday"