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-rw-r--r--comm/arduino_binairy_decoder/arduino_binairy_decoder.ino (renamed from spi_comm/arduino_binairy_decoder/arduino_binairy_decoder.ino)0
-rw-r--r--comm/deg_to_byte.py (renamed from spi_comm/deg_to_byte.py)0
-rw-r--r--comm/i2c/arduino_i2c_slave_1.py98
-rw-r--r--comm/i2c/i2c_arduino_master/i2c_arduino_master.ino36
-rw-r--r--comm/spi/arduino_spi_master/arduino_spi_master.ino34
-rw-r--r--comm/spi/arduino_spi_slave_1.py102
-rw-r--r--comm/uart/arduino_uart/arduino_uart.ino14
-rw-r--r--comm/uart/arduino_uart_1.py42
-rw-r--r--spi_comm/arduino_master_read/arduino_master_read.ino26
-rw-r--r--spi_comm/arduino_slave_read/arduino_slave_read.ino30
-rw-r--r--spi_comm/arduino_slave_write/arduino_slave_write.ino34
-rw-r--r--spi_comm/openmv_slave/spi_com_master.py36
12 files changed, 326 insertions, 126 deletions
diff --git a/spi_comm/arduino_binairy_decoder/arduino_binairy_decoder.ino b/comm/arduino_binairy_decoder/arduino_binairy_decoder.ino
index eb257e5..eb257e5 100644
--- a/spi_comm/arduino_binairy_decoder/arduino_binairy_decoder.ino
+++ b/comm/arduino_binairy_decoder/arduino_binairy_decoder.ino
diff --git a/spi_comm/deg_to_byte.py b/comm/deg_to_byte.py
index 196d4a5..196d4a5 100644
--- a/spi_comm/deg_to_byte.py
+++ b/comm/deg_to_byte.py
diff --git a/comm/i2c/arduino_i2c_slave_1.py b/comm/i2c/arduino_i2c_slave_1.py
new file mode 100644
index 0000000..5957c5b
--- /dev/null
+++ b/comm/i2c/arduino_i2c_slave_1.py
@@ -0,0 +1,98 @@
+# This work is licensed under the MIT license.
+# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
+# https://github.com/openmv/openmv/blob/master/LICENSE
+#
+# I2C with the Arduino as the master device and the OpenMV Cam as the slave.
+#
+# Please wire up your OpenMV Cam to your Arduino like this:
+#
+# OpenMV Cam Master I2C Data (P5) - Arduino Uno Data (A4)
+# OpenMV Cam Master I2C Clock (P4) - Arduino Uno Clock (A5)
+# OpenMV Cam Ground - Arduino Ground
+
+import pyb
+import ustruct
+
+text = "Hello World!\n"
+data = ustruct.pack("<%ds" % len(text), text)
+# Use "ustruct" to build data packets to send.
+# "<" puts the data in the struct in little endian order.
+# "%ds" puts a string in the data stream. E.g. "13s" for "Hello World!\n" (13 chars).
+# See https://docs.python.org/3/library/struct.html
+
+# READ ME!!!
+#
+# Please understand that when your OpenMV Cam is not the I2C master it may miss responding to
+# sending data as a I2C slave no matter if you call "i2c.send()" in an interrupt callback or in the
+# main loop below. When this happens the Arduino will get a NAK and have to try reading from the
+# OpenMV Cam again. Note that both the Arduino and OpenMV Cam I2C drivers are not good at getting
+# unstuck after encountering any I2C errors. On the OpenMV Cam and Arduino you can recover by
+# de-initing and then re-initing the I2C peripherals.
+
+# The hardware I2C bus for your OpenMV Cam is always I2C bus 2.
+bus = pyb.I2C(2, pyb.I2C.SLAVE, addr=0x12)
+bus.deinit() # Fully reset I2C device...
+bus = pyb.I2C(2, pyb.I2C.SLAVE, addr=0x12)
+print("Waiting for Arduino...")
+
+# Note that for sync up to work correctly the OpenMV Cam must be running this script before the
+# Arduino starts to poll the OpenMV Cam for data. Otherwise the I2C byte framing gets messed up,
+# and etc. So, keep the Arduino in reset until the OpenMV Cam is "Waiting for Arduino...".
+
+while True:
+ try:
+ bus.send(
+ ustruct.pack("<h", len(data)), timeout=10000
+ ) # Send the len first (16-bits).
+ try:
+ bus.send(data, timeout=10000) # Send the data second.
+ print("Sent Data!") # Only reached on no error.
+ except OSError as err:
+ pass # Don't care about errors - so pass.
+ # Note that there are 3 possible errors. A timeout error, a general purpose error, or
+ # a busy error. The error codes are 116, 5, 16 respectively for "err.arg[0]".
+ except OSError as err:
+ pass # Don't care about errors - so pass.
+ # Note that there are 3 possible errors. A timeout error, a general purpose error, or
+ # a busy error. The error codes are 116, 5, 16 respectively for "err.arg[0]".
+
+###################################################################################################
+# Arduino Code
+###################################################################################################
+#
+# #include <Wire.h>
+# #define BAUD_RATE 19200
+# #define CHAR_BUF 128
+#
+# void setup() {
+# Serial.begin(BAUD_RATE);
+# Wire.begin();
+# delay(1000); // Give the OpenMV Cam time to bootup.
+# }
+#
+# void loop() {
+# int32_t temp = 0;
+# char buff[CHAR_BUF] = {0};
+#
+# Wire.requestFrom(0x12, 2);
+# if(Wire.available() == 2) { // got length?
+#
+# temp = Wire.read() | (Wire.read() << 8);
+# delay(1); // Give some setup time...
+#
+# Wire.requestFrom(0x12, temp);
+# if(Wire.available() == temp) { // got full message?
+#
+# temp = 0;
+# while(Wire.available()) buff[temp++] = Wire.read();
+#
+# } else {
+# while(Wire.available()) Wire.read(); // Toss garbage bytes.
+# }
+# } else {
+# while(Wire.available()) Wire.read(); // Toss garbage bytes.
+# }
+#
+# Serial.print(buff);
+# delay(1); // Don't loop to quickly.
+# }
diff --git a/comm/i2c/i2c_arduino_master/i2c_arduino_master.ino b/comm/i2c/i2c_arduino_master/i2c_arduino_master.ino
new file mode 100644
index 0000000..ff960ed
--- /dev/null
+++ b/comm/i2c/i2c_arduino_master/i2c_arduino_master.ino
@@ -0,0 +1,36 @@
+#include <Wire.h>
+#define BAUD_RATE 19200
+#define CHAR_BUF 128
+
+void setup() {
+ Serial.begin(BAUD_RATE);
+ Wire.begin();
+ delay(1000); // Give the OpenMV Cam time to bootup.
+}
+
+void loop() {
+ int32_t temp = 0;
+ char buff[CHAR_BUF] = {0};
+
+ Wire.requestFrom(0x12, 2);
+ if(Wire.available() == 2) { // got length?
+
+ temp = Wire.read() | (Wire.read() << 8);
+ delay(1); // Give some setup time...
+
+ Wire.requestFrom(0x12, temp);
+ if(Wire.available() == temp) { // got full message?
+
+ temp = 0;
+ while(Wire.available()) buff[temp++] = Wire.read();
+
+ } else {
+ while(Wire.available()) Wire.read(); // Toss garbage bytes.
+ }
+ } else {
+ while(Wire.available()) Wire.read(); // Toss garbage bytes.
+ }
+
+ Serial.print(buff);
+ delay(1); // Don't loop to quickly.
+}
diff --git a/comm/spi/arduino_spi_master/arduino_spi_master.ino b/comm/spi/arduino_spi_master/arduino_spi_master.ino
new file mode 100644
index 0000000..248ef0f
--- /dev/null
+++ b/comm/spi/arduino_spi_master/arduino_spi_master.ino
@@ -0,0 +1,34 @@
+#include <SPI.h>
+#define SS_PIN 10
+#define BAUD_RATE 19200
+#define CHAR_BUF 128
+
+void setup() {
+ pinMode(SS_PIN, OUTPUT);
+ Serial.begin(BAUD_RATE);
+ SPI.begin();
+ SPI.setBitOrder(MSBFIRST);
+ SPI.setClockDivider(SPI_CLOCK_DIV16);
+ SPI.setDataMode(SPI_MODE0);
+ delay(1000); // Give the OpenMV Cam time to bootup.
+}
+
+void loop() {
+ int32_t len = 0;
+ char buff[CHAR_BUF] = {0};
+ digitalWrite(SS_PIN, LOW);
+ delay(1); // Give the OpenMV Cam some time to setup to send data.
+
+ if(SPI.transfer(1) == 85) { // saw sync char?
+ SPI.transfer(&len, 4); // get length
+ if (len) {
+ SPI.transfer(&buff, min(len, CHAR_BUF));
+ len -= min(len, CHAR_BUF);
+ }
+ while (len--) SPI.transfer(0); // eat any remaining bytes
+ }
+
+ digitalWrite(SS_PIN, HIGH);
+ Serial.print(buff);
+ delay(1); // Don't loop to quickly.
+} \ No newline at end of file
diff --git a/comm/spi/arduino_spi_slave_1.py b/comm/spi/arduino_spi_slave_1.py
new file mode 100644
index 0000000..e05c2f0
--- /dev/null
+++ b/comm/spi/arduino_spi_slave_1.py
@@ -0,0 +1,102 @@
+# This work is licensed under the MIT license.
+# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
+# https://github.com/openmv/openmv/blob/master/LICENSE
+#
+# SPI with the Arduino as the master device and the OpenMV Cam as the slave.
+#
+# Please wire up your OpenMV Cam to your Arduino like this:
+#
+# OpenMV Cam Master Out Slave In (P0) - Arduino Uno MOSI (11)
+# OpenMV Cam Master In Slave Out (P1) - Arduino Uno MISO (12)
+# OpenMV Cam Serial Clock (P2) - Arduino Uno SCK (13)
+# OpenMV Cam Slave Select (P3) - Arduino Uno SS (10)
+# OpenMV Cam Ground - Arduino Ground
+
+import pyb
+import ustruct
+import time
+
+text = "Hello World!\n"
+data = ustruct.pack("<bi%ds" % len(text), 85, len(text), text) # 85 is a sync char.
+# Use "ustruct" to build data packets to send.
+# "<" puts the data in the struct in little endian order.
+# "b" puts a signed char in the data stream.
+# "i" puts a signed integer in the data stream.
+# "%ds" puts a string in the data stream. E.g. "13s" for "Hello World!\n" (13 chars).
+# See https://docs.python.org/3/library/struct.html
+
+# READ ME!!!
+#
+# Please understand that when your OpenMV Cam is not the SPI master it may miss responding to
+# sending data as a SPI slave no matter if you call "spi.send()" in an interrupt callback or in the
+# main loop below. Because of this you must absolutely design your communications protocol such
+# that if the slave device (the OpenMV Cam) doesn't call "spi.send()" in time that garbage data
+# read from the SPI peripheral by the master (the Arduino) is tossed. To accomplish this we use a
+# sync character of 85 (binary 01010101) which the Arduino will look for as the first byte read.
+# If it doesn't see this then it aborts the SPI transaction and will try again. Second, in order to
+# clear out the SPI peripheral state we always send a multiple of four bytes and an extra four zero
+# bytes to make sure that the SPI peripheral doesn't hold any stale data which could be 85. Note
+# that the OpenMV Cam will miss the "spi.send()" window randomly because it has to service
+# interrupts. Interrupts will happen a lot more while connected to your PC.
+
+# The hardware SPI bus for your OpenMV Cam is always SPI bus 2.
+# polarity = 0 -> clock is idle low.
+# phase = 0 -> sample data on rising clock edge, output data on falling clock edge.
+spi = pyb.SPI(2, pyb.SPI.SLAVE, polarity=0, phase=0)
+
+
+# NSS callback.
+def nss_callback(line):
+ global spi, data
+ try:
+ spi.send(data, timeout=1000)
+ except OSError as err:
+ pass # Don't care about errors - so pass.
+ # Note that there are 3 possible errors. A timeout error, a general purpose error, or
+ # a busy error. The error codes are 116, 5, 16 respectively for "err.arg[0]".
+
+
+# Configure NSS/CS in IRQ mode to send data when requested by the master.
+pyb.ExtInt(pyb.Pin("P3"), pyb.ExtInt.IRQ_FALLING, pyb.Pin.PULL_UP, nss_callback)
+
+while True:
+ time.sleep_ms(1000)
+
+###################################################################################################
+# Arduino Code
+###################################################################################################
+#
+# #include <SPI.h>
+# #define SS_PIN 10
+# #define BAUD_RATE 19200
+# #define CHAR_BUF 128
+#
+# void setup() {
+# pinMode(SS_PIN, OUTPUT);
+# Serial.begin(BAUD_RATE);
+# SPI.begin();
+# SPI.setBitOrder(MSBFIRST);
+# SPI.setClockDivider(SPI_CLOCK_DIV16);
+# SPI.setDataMode(SPI_MODE0);
+# delay(1000); // Give the OpenMV Cam time to bootup.
+# }
+#
+# void loop() {
+# int32_t len = 0;
+# char buff[CHAR_BUF] = {0};
+# digitalWrite(SS_PIN, LOW);
+# delay(1); // Give the OpenMV Cam some time to setup to send data.
+#
+# if(SPI.transfer(1) == 85) { // saw sync char?
+# SPI.transfer(&len, 4); // get length
+# if (len) {
+# SPI.transfer(&buff, min(len, CHAR_BUF));
+# len -= min(len, CHAR_BUF);
+# }
+# while (len--) SPI.transfer(0); // eat any remaining bytes
+# }
+#
+# digitalWrite(SS_PIN, HIGH);
+# Serial.print(buff);
+# delay(1); // Don't loop to quickly.
+# }
diff --git a/comm/uart/arduino_uart/arduino_uart.ino b/comm/uart/arduino_uart/arduino_uart.ino
new file mode 100644
index 0000000..de826c9
--- /dev/null
+++ b/comm/uart/arduino_uart/arduino_uart.ino
@@ -0,0 +1,14 @@
+void setup() {
+ // put your setup code here, to run once:
+ Serial.begin(19200);
+}
+
+void loop() {
+ // put your main code here, to run repeatedly:
+ if (Serial.available()) {
+ // Read the most recent byte
+ byte byteRead = Serial.read();
+ // ECHO the value that was read
+ Serial.write(byteRead);
+ }
+} \ No newline at end of file
diff --git a/comm/uart/arduino_uart_1.py b/comm/uart/arduino_uart_1.py
new file mode 100644
index 0000000..3996cf7
--- /dev/null
+++ b/comm/uart/arduino_uart_1.py
@@ -0,0 +1,42 @@
+# This work is licensed under the MIT license.
+# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
+# https://github.com/openmv/openmv/blob/master/LICENSE
+#
+# Basic UART communications between OpenMV and Arduino Uno.
+
+# 1) Wire up your OpenMV Cam to your Arduino Uno like this:
+#
+# OpenMV Cam Ground Pin ----> Arduino Ground
+# OpenMV Cam UART3_TX(P4) ----> Arduino Uno UART_RX(0)
+# OpenMV Cam UART3_RX(P5) ----> Arduino Uno UART_TX(1)
+
+# 2) Uncomment and upload the following sketch to Arduino:
+#
+# void setup() {
+# // put your setup code here, to run once:
+# Serial.begin(19200);
+# }
+#
+# void loop() {
+# // put your main code here, to run repeatedly:
+# if (Serial.available()) {
+# // Read the most recent byte
+# byte byteRead = Serial.read();
+# // ECHO the value that was read
+# Serial.write(byteRead);
+# }
+# }
+
+# 3) Run the following script in OpenMV IDE:
+
+import time
+from pyb import UART
+
+# UART 3, and baudrate.
+uart = UART(3, 19200, timeout_char=200)
+
+while True:
+ uart.write("Hello World!\n")
+ if uart.any():
+ print(uart.read())
+ time.sleep_ms(1000)
diff --git a/spi_comm/arduino_master_read/arduino_master_read.ino b/spi_comm/arduino_master_read/arduino_master_read.ino
deleted file mode 100644
index e31eac9..0000000
--- a/spi_comm/arduino_master_read/arduino_master_read.ino
+++ /dev/null
@@ -1,26 +0,0 @@
-#include <SPI.h>
-
-int x;
-
-void setup() {
- Serial.begin(115200);
- SPI.begin();
- SPI.setClockDivider(SPI_CLOCK_DIV8);
- digitalWrite(SS,HIGH);
-
-}
-
-void loop() {
- byte Mastersend,Mastereceive;
- digitalWrite(SS, LOW);
- x = 1;
- Mastersend = x;
- Mastereceive=SPI.transfer(Mastersend);
- if(Mastereceive == 1){
- Serial.println("Master receive 1");
- }
- else{
- Serial.println("Master receive 0");
- }
-
-}
diff --git a/spi_comm/arduino_slave_read/arduino_slave_read.ino b/spi_comm/arduino_slave_read/arduino_slave_read.ino
deleted file mode 100644
index 8264ae3..0000000
--- a/spi_comm/arduino_slave_read/arduino_slave_read.ino
+++ /dev/null
@@ -1,30 +0,0 @@
-#include<SPI.h>
-
-volatile boolean received;
-volatile byte receivedData;
-
-ISR (SPI_STC_vect) //Inerrrput routine function
-{
- receivedData = SPDR; // Get the received data from SPDR register
- received = true; // Sets received as True
-}
-
-void setup()
-{
- Serial.begin(115200);
-
- pinMode(MISO,OUTPUT); //Sets MISO as OUTPUT
- SPCR |= _BV(SPE); //Turn on SPI in Slave Mode
- received = false;
- SPI.attachInterrupt(); //Activate SPI Interuupt
-}
-
-
-void loop()
-{
- if(received) {
- SPDR = receivedData; // send back the received data, this is not necessary, only for demo purpose
- received = false;
- Serial.print(receivedData, HEX);
- }
-}
diff --git a/spi_comm/arduino_slave_write/arduino_slave_write.ino b/spi_comm/arduino_slave_write/arduino_slave_write.ino
deleted file mode 100644
index d6f838f..0000000
--- a/spi_comm/arduino_slave_write/arduino_slave_write.ino
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <SPI.h>
-
-int x;
-long randNumber;
-
-
-volatile boolean received;
-volatile byte Slavereceived,Slavesend;
-
-void setup() {
- Serial.begin(115200);
- randomSeed(analogRead(0));
-
- pinMode(MISO,OUTPUT);
- SPCR |= _BV(SPE);
- received = false;
- SPI.attachInterrupt();
-
-}
-
-ISR (SPI_STC_vect){
- Slavereceived = SPDR;
- received = true;
-}
-
-void loop() {
- // put your main code here, to run repeatedly:
- randNumber = random(0, 1);
- Serial.println(randNumber);
- Slavesend=randNumber;
- SPDR = Slavesend;
- delay(1000);
-
-}
diff --git a/spi_comm/openmv_slave/spi_com_master.py b/spi_comm/openmv_slave/spi_com_master.py
deleted file mode 100644
index 6e10881..0000000
--- a/spi_comm/openmv_slave/spi_com_master.py
+++ /dev/null
@@ -1,36 +0,0 @@
-from machine import SPI, Pin
-deg = 40
-binary = format(deg, 'b')
-print(binary)
-
-spi = SPI(0, baudrate=400000) # Create SPI peripheral 0 at frequency of 400kHz.
- # Depending on the use case, extra parameters may be required
- # to select the bus characteristics and/or pins to use.
-cs = Pin(4, mode=Pin.OUT, value=1) # Create chip-select on pin 4.
-
-try:
- cs(0) # Select peripheral.
- spi.write(b"12345678") # Write 8 bytes, and don't care about received data.
-finally:
- cs(1) # Deselect peripheral.
-
-try:
- cs(0) # Select peripheral.
- rxdata = spi.read(8, 0x42) # Read 8 bytes while writing 0x42 for each byte.
-finally:
- cs(1) # Deselect peripheral.
-
-rxdata = bytearray(8)
-try:
- cs(0) # Select peripheral.
- spi.readinto(rxdata, 0x42) # Read 8 bytes inplace while writing 0x42 for each byte.
-finally:
- cs(1) # Deselect peripheral.
-
-txdata = b"12345678"
-rxdata = bytearray(len(txdata))
-try:
- cs(0) # Select peripheral.
- spi.write_readinto(txdata, rxdata) # Simultaneously write and read bytes.
-finally:
- cs(1) # Deselect peripheral.
generated by cgit v1.2.3 (git 2.46.0) at 2026-09-30 04:57:27 +0000