Some fixes to the host software geom stuff, added a small demo script

firmware/main.c

@@ -272,11 +272,10 @@ int main(void) {
 	MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
 	MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
 
-	/* 200kBd */
-	MAP_SSIConfigSetExpClk(SSI0_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
-	MAP_SSIConfigSetExpClk(SSI1_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
-	MAP_SSIConfigSetExpClk(SSI2_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
-	MAP_SSIConfigSetExpClk(SSI3_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
+	MAP_SSIConfigSetExpClk(SSI0_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
+	MAP_SSIConfigSetExpClk(SSI1_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
+	MAP_SSIConfigSetExpClk(SSI2_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
+	MAP_SSIConfigSetExpClk(SSI3_BASE, MAP_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 2000000, 8);
 
 	/* Configure the µDMA controller for use by the SPI interface */
 	MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);

host/matelight/config.py

@@ -9,23 +9,27 @@ DEFAULT_SCROLL_SPEED = 4
 # Pixels to leave blank between two letters
 LETTER_SPACING = 1
 
-FONT = bdflib.reader.read_bdf(open('fonts/5x8.bdf').readlines())
-FONT_WIDTH = 5
+#FONT = bdflib.reader.read_bdf(open('fonts/5x8.bdf').readlines())
+#FONT_WIDTH = 5
 
 # Computed value
-FONT_PADDED_BINARY = ('{:0'+str(FONT_WIDTH+'b}').format
+#FONT_PADDED_BINARY = ('{:0'+str(FONT_WIDTH+'b}').format
 
 # Display geometry
 # ┌─────────┐ ┌───┬───┬  ⋯  ┬───┬───┐
-# │1 o o o 5│ │ 1 │   │     │   │16 │
+# │1 o o o 5│ │ 1 │   │     │   │ 8│
 # │6 o o o o│ ├───┼───┼  ⋯  ┼───┼───┤
-# │o o o o o│ │17 │   │     │   │32 │
-# │o o o o20│ └───┴───┴  ⋯  ┴───┴───┘
-# └─────────┘
+# │o o o o o│ │ 9 │   │     │   │16 │
+# │o o o o20│ ├───┼───┼  ⋯  ┼───┼───┤
+# └─────────┘ │17 │   │     │   │24 │
+#             ├───┼───┼  ⋯  ┼───┼───┤
+#             │25 │   │     │   │32 │
+#             └───┴───┴  ⋯  ┴───┴───┘
+
 CRATE_WIDTH = 5
 CRATE_HEIGHT = 4
-CRATES_X = 16
-CRATES_Y = 2
+CRATES_X = 8
+CRATES_Y = 4
 
 # Computed values
 DISPLAY_WIDTH = CRATES_X * CRATE_WIDTH

host/matelight/host.py

@@ -1,16 +1,19 @@
-from pyusb import usb
+import usb
 import colorsys
 import numpy as np
+from config import *
+import itertools
 
 dev = usb.core.find(idVendor=0x1cbe, idProduct=0x0003)
 
 def sendframe(framedata):
-    if not isinstance(framedata, np.array) or framedata.shape != (DISPLAY_WIDTH, DISPLAY_HEIGHT, 3) or framedata.dtype != np.int8:
-        raise ValueError('framedata must be a ({}, {}, 3)-numpy array of int8s'.format(DISPLAY_WIDTH, DISPLAY_HEIGHT))
+	# not isinstance(framedata, np.array) or 
+	if framedata.shape != (DISPLAY_HEIGHT, DISPLAY_WIDTH, 3) or framedata.dtype != np.uint8:
+		raise ValueError('framedata must be a ({}, {}, 3)-numpy array of int8s. Got a {}-numpy array of {}'.format(DISPLAY_WIDTH, DISPLAY_HEIGHT, framedata.shape, framedata.dtype))
 
-    for cx, cy in itertools.product(range(16), range(2)):
-        cratedata = framedata[cx*CRATE_WIDTH:(cx+1)*CRATE_WIDTH, cy*CRATE_HEIGHT:(cy+1)*CRATE_HEIGHT]
-        # Send framebuffer data
-        dev.write(0x01, bytes([0, x, y])+bytes(list(cratedata.flatten())))
-    # Send latch command
-    dev.write(0x01, b'\x01')
+	for cy, cx in itertools.product(range(CRATES_Y), range(CRATES_X)):
+		cratedata = framedata[cy*CRATE_HEIGHT:(cy+1)*CRATE_HEIGHT, cx*CRATE_WIDTH:(cx+1)*CRATE_WIDTH]
+		# Send framebuffer data
+		dev.write(0x01, bytes([0, cx, cy])+bytes(list(cratedata.flatten())))
+	# Send latch command
+	dev.write(0x01, b'\x01')

host/matelight/nyancat-test.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+import host
+import numpy as np
+from config import *
+from PIL import Image, ImageSequence
+import time
+
+img1 = Image.open(open('../nyancat.png', 'rb'))
+img2 = Image.open(open('../nyancat2.png', 'rb'))
+scroller = Image.open(open('../scroller.png', 'rb'))
+datas = []
+for img in [img1, img2]:
+	im = img.convert("RGB")
+	im.thumbnail((DISPLAY_WIDTH, DISPLAY_HEIGHT), Image.NEAREST)
+	data = np.array(im.getdata(), dtype=np.uint8)
+	datas += [data.reshape((DISPLAY_HEIGHT, DISPLAY_WIDTH, 3))]
+
+im = scroller.convert("RGB")
+bar = np.array(im.getdata(), dtype=np.uint8)
+foo = bar.reshape((DISPLAY_HEIGHT, 300, 3))
+
+while True:
+	for i in range(20):
+		for data in datas:
+			host.sendframe(data)
+			time.sleep(0.1)
+	for i in range(260):
+		host.sendframe(foo[:, i:i+40, :])
+