Turtorial Examples for CC3200-MicroPython
2020/3/11
Turtorial Examples for CC3200-MicroPython
CC3200
LaunchPad CC3200 WiFi pinout
Ti/swru372c.pdf
Ti/cc3200.pdf
I2C pinout:
| P1_xx | Func |
|---|---|
| P1_01(3.3V) | VCC |
| P1_09(P01/GP10) | SCL |
| P1_10(P02/GP11) | SDA |
| P2_xx | Func |
|---|---|
| P2_20(GND) | GND |
SPI pinout:
| P1_xx | Func |
|---|---|
| P1_01(3.3V) | VCC |
| P1_07(P05/GP14) | CLK |
| P2_xx | Func |
|---|---|
| P2_20(GND | GND |
| P2_18(P08/GP17) | CS |
| P2_15(P07/GP16) | MOSI(DOUT) |
| P2_14(P06/GP15) | MISO(DIN) |
GPIO pinout:
| P1_xx | Func |
|---|---|
| P1_01(3.3V) | VCC |
| P1_05(P61/GP06) | GPIO |
| P1_08(P62/GP07) | GPIO |
| P2_xx | Func |
|---|---|
| P2_20(GND) | GND |
| P2_19(P18/GP28) | GPIO |
| P2_18(P08/GP17) | CS |
| P2_15(P07/GP16) | MOSI(DOUT) |
| P2_14(P06/GP15) | MISO(DIN) |
| P2_12(P55/GP01) | GPIO |
| P2_11(P15/GP22) | GPIO |
decimal numbers not supported
>>> a = 0.123
Traceback (most recent call last):
File "<stdin>", line 1
SyntaxError: decimal numbers not supported
>>>
Pin/GPIO
from machine import Pin
# Orange LED - D6(GP10) on board
gp10_out = Pin('GP10', mode=Pin.OUT)
gp10_out.value(1)
gp10_out.value(0)
# Green LED - D5(GP11) on board
gp11_out = Pin('GP11', mode=Pin.OUT)
gp11_out.value(1)
gp11_out.value(0)
from machine import Pin
# SW2 GPIO22
# SW3 GPIO13
# make GP22 an input with the pull-up enabled
gp22_in = Pin('GP22', mode=Pin.IN, pull=Pin.PULL_UP)
gp22_in() # get value, 0 or 1 on SW2
# make GP13 an input with the pull-up enabled
gp13_in = Pin('GP13', mode=Pin.IN, pull=Pin.PULL_UP)
gp13_in() # get value, 0 or 1 on SW3
SW control LED
from machine import Pin
ledOrange = Pin('GP10', mode=Pin.OUT)
ledGreen = Pin('GP11', mode=Pin.OUT)
sw2 = Pin('GP22', mode=Pin.IN, pull=Pin.PULL_UP)
sw3 = Pin('GP13', mode=Pin.IN, pull=Pin.PULL_UP)
while True:
ledOrange.value(sw2())
ledGreen.value(sw3())
PWM
# make LEDs off
from machine import Pin
# Orange LED - D6(GP10) on board
gp10_out = Pin('GP10', mode=Pin.OUT)
gp10_out.value(0)
# Green LED - D5(GP11) on board
gp11_out = Pin('GP11', mode=Pin.OUT)
gp11_out.value(0)
#
from machine import Timer
# timer 3 in PWM mode and width must be 16 buts
tim = Timer(3, mode=Timer.PWM, width=16)
# enable channel A @1KHz with a 1.55% duty cycle
tim_a = tim.channel(Timer.A, freq=1000, duty_cycle=0155) # p1(GP10): Orange LED on board
# enable channel B @1KHz with a 30.55% duty cycle
tim_b = tim.channel(Timer.B, freq=1000, duty_cycle=3055) # p2(GP11): Green LED on board
ADC
from time import sleep_ms
# p57 GP2 a#0
# p58 GP3 a#1
# p59 GP4 a#2
# p60 GP5 a#3
# read value, 0-4095
from machine import ADC
adc = ADC()
a0in = adc.channel(pin='GP2')
a1in = adc.channel(pin='GP3')
a2in = adc.channel(pin='GP4')
a3in = adc.channel(pin='GP5')
while True:
print('p57:'+str(a0in()))
print('p58:'+str(a1in()))
print('p59:'+str(a2in()))
print('p60:'+str(a3in()))
print('============')
sleep_ms(1000)
SPI
SDCard(動作確認無し、ピン配置からの推測)
# SDCard
from machine import SD, Pin
import os
# clock pin, cmd pin, data0 pin
# 以下の２つの設定のうち１つを使用する
# 設定＃１
sd0_clk = Pin('GP10', mode=Pin.ALT, alt=6)
sd0_cmd = Pin('GP11', mode=Pin.ALT, alt=6)
sd0_dat0 = Pin('GP15', mode=Pin.ALT, alt=8)
# 設定#2
sd0_clk = Pin('GP16', mode=Pin.ALT, alt=8)
sd0_cmd = Pin('GP17', mode=Pin.ALT, alt=8)
sd0_dat0 = Pin('GP15', mode=Pin.ALT, alt=8)
sd = SD(pins=(sd0_clk, sd0_cmd, sd0_dat0) # SD0_CLK(SCL) SD0_CMD(MOSI) SD0_DAT0(MISO)
os.mount(sd, '/sd')
another SPI sample:
see NeoPixel(are using SPI)
I2C
from machine import Pin, I2C
scl0 = Pin('GP10', mode=Pin.ALT, alt=1)
sda0 = Pin('GP11', mode=Pin.ALT, alt=1)
i2c = I2C(0, scl=scl0, sda=sda0)
i2c.scan()
# [24, 65] (ボード上の以下のデバイスのアドレスが返る)
# BMA222 (加速度センサ) 24(0x18)
# TMP006 (温度センサ) 65(0x41)
RTC
from machine import RTC
rtc = RTC() # init with default time and date
rtc = RTC(datetime=(2020, 3, 11, 0, 21, 0, 0, None)) # init with a specific time and date
print(rtc.now())
NeoPixel
module install:
git clone https://github.com/JanBednarik/micropython-ws2812.git
cd micropython-ws2812
Patch ws2812.py to ws2812_cc3200.py as follows:
patch#1:
import pyb
->
import machine as pyb
patch#2:
self.spi = pyb.SPI(spi_bus, pyb.SPI.MASTER, baudrate=3200000, polarity=0, phase=1)
->
self.spi = pyb.SPI(spi_bus,baudrate=3200000, polarity=0, phase=1)
patch#3:
self.spi.send(self.buf)
->
self.spi.write(self.buf)
Put it in /flash
ampy put ws2812_cc3200.py
demo sample:
# connect the following pin to DIN of nexpixels
# P2_15(P07/GP16) (if spi_bus=0)
from ws2812_cc3200 import WS2812
chain = WS2812(spi_bus=0, led_count=4)
data = [
(255, 0, 0), # red
(0, 255, 0), # greenp
(0, 0, 255), # blue
(85, 85, 85), # white
]
chain.show(data)
Networking
以下の部分は自分のWiFi環境に合わせて変更すること：
MYSSID = "your_ssid"
MYKEY = "your_passwd"
ＩＰを静的に与えるサンプルにもなっているので IPがかち合っていれば、IPも変更すること。
CC3200_starwars.py
MYSSID = "your_ssid"
MYKEY = "your_passwd
import machine
from network import WLAN
# configure the WLAN subsystem in station mode (the default is AP)
wlan = WLAN(mode=WLAN.STA)
# go for fixed IP settings
wlan.ifconfig(config=('192.168.0.107', '255.255.255.0', '192.168.0.1', '8.8.8.8'))
#wlan.scan() # scan for available networks
wlan.connect(ssid=MYSSID, auth=(WLAN.WPA2, MYKEY))
while not wlan.isconnected():
pass
print(wlan.ifconfig())
#==========================================
# Star Wars ASCII Art (python3)
import socket
addr_info = socket.getaddrinfo("towel.blinkenlights.nl",23)
addr = addr_info[0][-1]
s = socket.socket()
s.connect(addr)
while True:
data = s.recv(500)
print(str(data, 'utf8'), end='')
#=============================================
starwarsのASCII_Artのアニメが表示されればＯＫとなる。
Peformace Test
performanceTestCC3200.py
# Peformace Test for CC3200
from machine import RTC
rtc = RTC(datetime=(2020, 2, 9, 10, 11, 0, 0, None))
def performanceTest():
secs = rtc.now()[5]
endTime = secs + 10
count = 0
while rtc.now()[5] < endTime:
count += 1
print("Count: ", count)
performanceTest()
以上
