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RISCY BUSINESS»Episode Guide
Studying the LED Fade Demo Code
References ▼
SiFive Developers
Platform Reference Manual
[1]8:47[2]17:02[6]38:00
[7]50:32[8]52:56[9]55:54
SiFive Developers
Freedom E310-G000 Manual
[3]25:23[4]28:31[5]35:03
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Neo Ar
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Matt Mascarenhas
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0:07Recap and set the stage for the day
0:07Recap and set the stage for the day
0:07Recap and set the stage for the day
1:46Learn the LED colour fading logic in led_fade.c
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1:46Learn the LED colour fading logic in led_fade.c
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1:46Learn the LED colour fading logic in led_fade.c
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4:33Consider investing in a second webcam for the HiFive1
4:33Consider investing in a second webcam for the HiFive1
4:33Consider investing in a second webcam for the HiFive1
5:56Upload led_fade.c to the HiFive1 and run it to eyeball the LED fading
🏃
5:56Upload led_fade.c to the HiFive1 and run it to eyeball the LED fading
🏃
5:56Upload led_fade.c to the HiFive1 and run it to eyeball the LED fading
🏃
8:01Confirm that it is doing the logic we expected
8:01Confirm that it is doing the logic we expected
8:01Confirm that it is doing the logic we expected
8:47Determine to understand how the PWM1_REG() calls manipulate the PWM Configuration Register1
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8:47Determine to understand how the PWM1_REG() calls manipulate the PWM Configuration Register1
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8:47Determine to understand how the PWM1_REG() calls manipulate the PWM Configuration Register1
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17:02Marry up the register offsets and constants defined in devices/pwm.h with the documentation2
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17:02Marry up the register offsets and constants defined in devices/pwm.h with the documentation2
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17:02Marry up the register offsets and constants defined in devices/pwm.h with the documentation2
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25:23Consult the Freedom E310-G000 Manual3 for the base address of the config register
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25:23Consult the Freedom E310-G000 Manual3 for the base address of the config register
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25:23Consult the Freedom E310-G000 Manual3 for the base address of the config register
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28:31Determine that we are sending three different signals, one for each LED channel4
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28:31Determine that we are sending three different signals, one for each LED channel4
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28:31Determine that we are sending three different signals, one for each LED channel4
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35:03Read the PWM1_REG() macro and marry up the defined PWM1_BASE_ADDR with the documentation5
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35:03Read the PWM1_REG() macro and marry up the defined PWM1_BASE_ADDR with the documentation5
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35:03Read the PWM1_REG() macro and marry up the defined PWM1_BASE_ADDR with the documentation5
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38:00Come to understand how the PWM1_REG() calls manipulate the low 16 bits of the PWM Compare Register6
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38:00Come to understand how the PWM1_REG() calls manipulate the low 16 bits of the PWM Compare Register6
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38:00Come to understand how the PWM1_REG() calls manipulate the low 16 bits of the PWM Compare Register6
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50:32Learn that pwmcmp0 sets the width of the duty cycle and that pwmcount resets to zero at the end of every PWM cycle7
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50:32Learn that pwmcmp0 sets the width of the duty cycle and that pwmcount resets to zero at the end of every PWM cycle7
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50:32Learn that pwmcmp0 sets the width of the duty cycle and that pwmcount resets to zero at the end of every PWM cycle7
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52:56Go over the PWM Compare Registers another time8
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52:56Go over the PWM Compare Registers another time8
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52:56Go over the PWM Compare Registers another time8
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55:54Note that the signal is high most of the time9
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55:54Note that the signal is high most of the time9
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55:54Note that the signal is high most of the time9
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58:37Think about the logic of those PWM1_REG() calls
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🖌
58:37Think about the logic of those PWM1_REG() calls
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🖌
58:37Think about the logic of those PWM1_REG() calls
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🖌
1:02:38Determine to draw out the LED's waveform
1:02:38Determine to draw out the LED's waveform
1:02:38Determine to draw out the LED's waveform
1:03:23We're out of time for today
1:03:23We're out of time for today
1:03:23We're out of time for today