aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fw/.gitignore6
-rw-r--r--fw/Makefile6
-rw-r--r--fw/MatrixTransform.ipynb218
-rw-r--r--fw/bus_addr.c3
-rw-r--r--fw/crc.c59
-rw-r--r--fw/crc.py8
6 files changed, 298 insertions, 2 deletions
diff --git a/fw/.gitignore b/fw/.gitignore
index 9c55c38..c5278ea 100644
--- a/fw/.gitignore
+++ b/fw/.gitignore
@@ -1,4 +1,5 @@
*.o
+*.so
*.dot
*.lst
*.map
@@ -10,3 +11,8 @@
transpose.elf
cmsis_exports.c
+sources.c
+sources.tar.xz
+bus_addr.c
+__pycache__
+.ipynb_checkpoints
diff --git a/fw/Makefile b/fw/Makefile
index f86df47..b6f64d0 100644
--- a/fw/Makefile
+++ b/fw/Makefile
@@ -52,9 +52,9 @@ sources.tar.xz: main.c transpose.c transpose.h
tar -caf $@ $^
sources.c: sources.tar.xz
- xxd -i $< > $@
+ xxd -i $< | sed 's/=/__attribute__((section(".text")))=/' > $@
-main.elf: main.o startup_stm32f030x6.o system_stm32f0xx.o $(HAL_PATH)/Src/stm32f0xx_ll_utils.o base.o cmsis_exports.o transpose.o bus_addr.o
+main.elf: main.o startup_stm32f030x6.o system_stm32f0xx.o $(HAL_PATH)/Src/stm32f0xx_ll_utils.o base.o cmsis_exports.o transpose.o bus_addr.o sources.o
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
$(OBJCOPY) -O ihex $@ $(@:.elf=.hex)
$(OBJCOPY) -O binary $@ $(@:.elf=.bin)
@@ -80,4 +80,6 @@ clean:
rm -f **.expand
rm -f transpose.elf
rm -f crc.so
+ rm -f sources.tar.xz
+ rm -f sources.c
diff --git a/fw/MatrixTransform.ipynb b/fw/MatrixTransform.ipynb
new file mode 100644
index 0000000..8e95469
--- /dev/null
+++ b/fw/MatrixTransform.ipynb
@@ -0,0 +1,218 @@
+{
+ "cells": [
+ {
+ "cell_type": "code",
+ "execution_count": 129,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "import struct\n",
+ "\n",
+ "import serial\n",
+ "import PIL\n",
+ "import numpy as np\n",
+ "from matplotlib import pyplot as plt\n",
+ "%matplotlib inline\n",
+ "\n",
+ "import crc"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 102,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "digit_mask = PIL.Image.open('scans/digit.png')\n",
+ "seg_masks = [ np.asarray(PIL.Image.open('segmasks/seg{}.png'.format(i)), dtype=np.float)[:,:,0]/255.0 for i in range(1,9) ]\n",
+ "digit_h, digit_w = seg_masks[0].shape"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 193,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "pic = PIL.Image.open('circle.jpg')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 194,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "dpi = 600\n",
+ "scale = 1000/5091\n",
+ "stride_x, stride_y = 1.0*dpi*scale, 38.8/25.4*dpi*scale"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 195,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "mask_w, mask_h = int(8*stride_x)+1, int(4*stride_y)+1\n",
+ "resized = np.asarray(pic.resize((mask_w, mask_h), PIL.Image.BILINEAR).convert('HSV'), dtype=np.float)[:,:,2]/255"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 196,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "def sub(resized, x, y):\n",
+ " return resized[int(y*stride_y):int(y*stride_y)+digit_h, int(x*stride_x):int(x*stride_x)+digit_w]"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 197,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+ "source": [
+ "def digit_values(resized, x, y):\n",
+ " img = sub(resized, x, y)/255.0\n",
+ " for mask in seg_masks:\n",
+ " yield np.average(np.multiply(mask, img))"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 198,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [],
+ "source": [
+ "def make_vals(resized):\n",
+ " subvals = np.zeros((8, 4, 8), dtype=np.float)\n",
+ " for x in range(8):\n",
+ " for y in range(4):\n",
+ " subvals[x,y] = list(digit_values(resized, x, y))\n",
+ " return subvals"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 204,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+ "source": [
+ "def send_packet(ser, resized, addr=5):\n",
+ " gamma = 2\n",
+ " out = np.clip(np.power(make_vals(resized), 1/gamma)*255, 0, 255).astype(np.uint8)\n",
+ " pkt = b''\n",
+ " for x in range(8):\n",
+ " for y in range(4):\n",
+ " pkt += bytes(out[x,y,:]) + b'\\x00\\x00'\n",
+ " pkt += b'\\x03\\x00\\x00\\x00'\n",
+ " pkt += struct.pack('I', crc.crc(pkt))\n",
+ " pkt = bytes([0x40 | addr]) + pkt\n",
+ " ser.write(pkt)\n",
+ " return out"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 205,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "array([[[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 0],\n",
+ " [2, 3, 0, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [1, 2, 0, 0, 0, 0, 0, 0],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [0, 2, 2, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [0, 2, 2, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [1, 0, 2, 0, 0, 0, 0, 0],\n",
+ " [0, 0, 0, 0, 0, 0, 0, 0],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 0, 3, 1, 1],\n",
+ " [2, 0, 3, 2, 1, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]],\n",
+ "\n",
+ " [[3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1],\n",
+ " [3, 3, 3, 3, 3, 3, 3, 1]]], dtype=uint8)"
+ ]
+ },
+ "execution_count": 205,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "ser = serial.Serial('/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A90JRHXH-if00-port0', 2000000)\n",
+ "send_packet(ser, resized)"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.5.3"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
diff --git a/fw/bus_addr.c b/fw/bus_addr.c
new file mode 100644
index 0000000..7f765ec
--- /dev/null
+++ b/fw/bus_addr.c
@@ -0,0 +1,3 @@
+
+#include <stdint.h>
+uint8_t bus_addr = 0;
diff --git a/fw/crc.c b/fw/crc.c
new file mode 100644
index 0000000..5e5c7d2
--- /dev/null
+++ b/fw/crc.c
@@ -0,0 +1,59 @@
+/* MPEG-2 CRC as done by the STM32F0 hardware CRC unit */
+#include <sys/types.h>
+
+/* CRC32 lookup table for polynomial 0x04c11db7 */
+static u_long crc_table[256] = {
+ 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
+ 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
+ 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
+ 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
+ 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
+ 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+ 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
+ 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
+ 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
+ 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
+ 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
+ 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
+ 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
+ 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
+ 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
+ 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+ 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
+ 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
+ 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
+ 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
+ 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
+ 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
+ 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
+ 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
+ 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
+ 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+ 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
+ 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
+ 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
+ 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
+ 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
+ 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
+ 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
+ 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
+ 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
+ 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+ 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
+ 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
+ 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
+ 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
+ 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
+ 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
+ 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4};
+
+u_long crc32 (char *data, int len)
+{
+ register int i;
+ u_long crc = 0xffffffff;
+
+ for (i=0; i<len; i++)
+ crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *data++) & 0xff];
+
+ return crc;
+}
diff --git a/fw/crc.py b/fw/crc.py
new file mode 100644
index 0000000..043c6e9
--- /dev/null
+++ b/fw/crc.py
@@ -0,0 +1,8 @@
+import ctypes
+import os
+lib = ctypes.CDLL(os.path.join(os.path.dirname(__file__), '_crc.so'))
+lib.crc32.restype = ctypes.c_uint32
+def crc(data):
+ if type(data) is not bytes:
+ raise TypeError('This only works with bytes')
+ return lib.crc32(data, len(data))
generated by cgit (git 2.34.1) at 2024-11-21 12:32:43 +0000