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RISCY BUSINESS»Episode Guide
LED Fade Demo Review
References ▼
SiFive Developers
Freedom E300 Platform Reference Manual
[1]2:16[8]45:54
SiFve
HiFive1 Schematics
[2]4:41
Handmade Network
RISCY BUSINESS Forums
[3]10:48[6]25:01
Wikipedia
Illuminant D65
[4]10:48
GitHub
drones-for-ag/​treecount
[5]21:34
Twitter
@hmn_riscy For uint32_t G = 0xFF0; 6% duty cycle, as you predicted. Is this what you wanted?
[7]31:54
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0:06Recap and set the stage for the day
0:06Recap and set the stage for the day
0:06Recap and set the stage for the day
2:16Consult the schematic on p 341
2:16Consult the schematic on p 341
2:16Consult the schematic on p 341
3:03croepha I think the circle denotes a normally off input, but that wouldn't apply for oval in this case. So, I think the whole grey block is the tristate buffer, and the triangle is just the output part of the buffer
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3:03croepha I think the circle denotes a normally off input, but that wouldn't apply for oval in this case. So, I think the whole grey block is the tristate buffer, and the triangle is just the output part of the buffer
🗪
3:03croepha I think the circle denotes a normally off input, but that wouldn't apply for oval in this case. So, I think the whole grey block is the tristate buffer, and the triangle is just the output part of the buffer
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3:39croepha Alright go to the board schematics, page three, grid D1
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3:39croepha Alright go to the board schematics, page three, grid D1
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3:39croepha Alright go to the board schematics, page three, grid D1
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4:41Consult the HiFive1 Schematics2 in conjunction with croepha's explanation
4:41Consult the HiFive1 Schematics2 in conjunction with croepha's explanation
4:41Consult the HiFive1 Schematics2 in conjunction with croepha's explanation
7:53croepha If it's high, then no current will flow through the LED, because the potential will be the same on both sides of the LED
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7:53croepha If it's high, then no current will flow through the LED, because the potential will be the same on both sides of the LED
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7:53croepha If it's high, then no current will flow through the LED, because the potential will be the same on both sides of the LED
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10:34croepha The main thing OE does is make the output buffer go from high impedance (off) to low impedance (on)
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10:34croepha The main thing OE does is make the output buffer go from high impedance (off) to low impedance (on)
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10:34croepha The main thing OE does is make the output buffer go from high impedance (off) to low impedance (on)
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10:48Consult Megan's forum post regarding programming the PWM-driven LEDs3 and write a reply, referring to Illuminant D654
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10:48Consult Megan's forum post regarding programming the PWM-driven LEDs3 and write a reply, referring to Illuminant D654
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10:48Consult Megan's forum post regarding programming the PWM-driven LEDs3 and write a reply, referring to Illuminant D654
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21:34Show some colour correct code using D655
21:34Show some colour correct code using D655
21:34Show some colour correct code using D655
25:01Continue replying to Megan6
25:01Continue replying to Megan6
25:01Continue replying to Megan6
30:43Shout-out to Megan, with thoughts to try and interview her on the series
30:43Shout-out to Megan, with thoughts to try and interview her on the series
30:43Shout-out to Megan, with thoughts to try and interview her on the series
31:32Determine that we understand double_tap_dontboot.c and move on to led_fade.c
31:32Determine that we understand double_tap_dontboot.c and move on to led_fade.c
31:32Determine that we understand double_tap_dontboot.c and move on to led_fade.c
31:54Refer to RiskyFive's oscilloscope7 with our newfound understanding of how the PWM works
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31:54Refer to RiskyFive's oscilloscope7 with our newfound understanding of how the PWM works
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31:54Refer to RiskyFive's oscilloscope7 with our newfound understanding of how the PWM works
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35:310 = On for the LEDs
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35:310 = On for the LEDs
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35:310 = On for the LEDs
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37:21Review led_fade.c with our newfound understanding
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37:21Review led_fade.c with our newfound understanding
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37:21Review led_fade.c with our newfound understanding
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45:54Closely read the LED changing code in conjunction with the documentation on the Pulse-Width Modulation (PWM) Peripheral8
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45:54Closely read the LED changing code in conjunction with the documentation on the Pulse-Width Modulation (PWM) Peripheral8
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45:54Closely read the LED changing code in conjunction with the documentation on the Pulse-Width Modulation (PWM) Peripheral8
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55:59Reasoning about the duty cycle of the LEDs
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55:59Reasoning about the duty cycle of the LEDs
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55:59Reasoning about the duty cycle of the LEDs
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🖌
1:03:31Review the intuition behind the center-aligned waveform computation
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1:03:31Review the intuition behind the center-aligned waveform computation
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🖌
1:03:31Review the intuition behind the center-aligned waveform computation
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🖌
1:06:13That's gonna do it for this episode
1:06:13That's gonna do it for this episode
1:06:13That's gonna do it for this episode