1 files changed, 0 insertions, 102 deletions
diff --git a/CODE/debug/prewk/comm/spi/arduino_spi_slave_1.py b/CODE/debug/prewk/comm/spi/arduino_spi_slave_1.py
deleted file mode 100644
index e05c2f0..0000000
--- a/CODE/debug/prewk/comm/spi/arduino_spi_slave_1.py
+++ /dev/null
@@ -1,102 +0,0 @@
-# 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.
-# }