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RISCY BUSINESS»Episode Guide
More confusion over LEDs
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The Big RISCY BUSINESS Question Thread
[1]0:08
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SiFive HiFive1 Getting Started Guide
[2]19:38
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Freedom E300 Platform Reference Manual
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[6]35:28[7]37:50[9]48:42
[10]52:50[11]55:17[12]59:53
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0:08Consult Luis' forum post explaining why measure_cpu_freq is no_inline1
0:08Consult Luis' forum post explaining why measure_cpu_freq is no_inline1
0:08Consult Luis' forum post explaining why measure_cpu_freq is no_inline1
4:53croepha Well, if it actually gets inlined, then the instructions for the inline function will be at multiple addresses
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4:53croepha Well, if it actually gets inlined, then the instructions for the inline function will be at multiple addresses
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4:53croepha Well, if it actually gets inlined, then the instructions for the inline function will be at multiple addresses
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7:22Recap last episode with the determination to review the stuff controlling the LEDs
7:22Recap last episode with the determination to review the stuff controlling the LEDs
7:22Recap last episode with the determination to review the stuff controlling the LEDs
8:28Reacquaint ourselves with the LED controlling code
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8:28Reacquaint ourselves with the LED controlling code
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8:28Reacquaint ourselves with the LED controlling code
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19:38Consult 7.1. Freedom E310 Pinout2
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19:38Consult 7.1. Freedom E310 Pinout2
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19:38Consult 7.1. Freedom E310 Pinout2
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21:20Chapter 11 - General Purpose Input/Output Controller (GPIO)3
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21:20Chapter 11 - General Purpose Input/Output Controller (GPIO)3
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21:20Chapter 11 - General Purpose Input/Output Controller (GPIO)3
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24:03Determine that we are skipping the PWM, but writing directly to the output port
24:03Determine that we are skipping the PWM, but writing directly to the output port
24:03Determine that we are skipping the PWM, but writing directly to the output port
25:17Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral4
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25:17Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral4
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25:17Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral4
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30:03Chapter 11 - General Purpose Input/Output Controller (GPIO)5
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30:03Chapter 11 - General Purpose Input/Output Controller (GPIO)5
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30:03Chapter 11 - General Purpose Input/Output Controller (GPIO)5
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35:28Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral6
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35:28Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral6
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35:28Chapter 15 - E300 Pulse-Width Modulation (PWM) Peripheral6
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36:07croepha Is GPIO_REG a macro? Might be worth looking at the defines in the header
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36:07croepha Is GPIO_REG a macro? Might be worth looking at the defines in the header
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36:07croepha Is GPIO_REG a macro? Might be worth looking at the defines in the header
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37:50Chapter 15, continued7
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37:50Chapter 15, continued7
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37:50Chapter 15, continued7
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39:12Wonder if it's not a bug in the code, check the GitHub repository8 and determine to ask on the forums
39:12Wonder if it's not a bug in the code, check the GitHub repository8 and determine to ask on the forums
39:12Wonder if it's not a bug in the code, check the GitHub repository8 and determine to ask on the forums
42:10Review the PWM Red LED path
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42:10Review the PWM Red LED path
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42:10Review the PWM Red LED path
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45:22Review the LED code in led_fade.c
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45:22Review the LED code in led_fade.c
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45:22Review the LED code in led_fade.c
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45:47croepha Period != duty cycle. Period is more like frequency
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45:47croepha Period != duty cycle. Period is more like frequency
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45:47croepha Period != duty cycle. Period is more like frequency
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45:58Duty cycle
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45:58Duty cycle
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45:58Duty cycle
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48:42Review the documentation on CMP09
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48:42Review the documentation on CMP09
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48:42Review the documentation on CMP09
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51:44croepha When configured as an output (either SW or IOF controlled), the SW-writeableoutxorregister is combined with the output to invert it
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51:44croepha When configured as an output (either SW or IOF controlled), the SW-writeableoutxorregister is combined with the output to invert it
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51:44croepha When configured as an output (either SW or IOF controlled), the SW-writeableoutxorregister is combined with the output to invert it
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52:50Read about PWM Compare Registers, and consider if the XOR is doing nothing because we are not setting the 0 bit10
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52:50Read about PWM Compare Registers, and consider if the XOR is doing nothing because we are not setting the 0 bit10
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52:50Read about PWM Compare Registers, and consider if the XOR is doing nothing because we are not setting the 0 bit10
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54:24croepha I think it means that it inverts it based on its last state
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54:24croepha I think it means that it inverts it based on its last state
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54:24croepha I think it means that it inverts it based on its last state
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55:17Consult Figure 11.1 - Structure of a single GPIO Pin with Control Registers11
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55:17Consult Figure 11.1 - Structure of a single GPIO Pin with Control Registers11
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55:17Consult Figure 11.1 - Structure of a single GPIO Pin with Control Registers11
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56:18croepha When the bit is high for OUT_XOR, it enables the path through the XOR gate
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56:18croepha When the bit is high for OUT_XOR, it enables the path through the XOR gate
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56:18croepha When the bit is high for OUT_XOR, it enables the path through the XOR gate
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57:15croepha The oval feeds back in, so it's a loop
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57:15croepha The oval feeds back in, so it's a loop
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57:15croepha The oval feeds back in, so it's a loop
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58:58croepha I guess I was assuming that IOF1_OVAL was the previous value
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58:58croepha I guess I was assuming that IOF1_OVAL was the previous value
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58:58croepha I guess I was assuming that IOF1_OVAL was the previous value
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59:53Continue studying Figure 11.112
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59:53Continue studying Figure 11.112
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59:53Continue studying Figure 11.112
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1:05:59We are out of time for today, with the determination to ask on the forums about the CMP0 setting and the XOR stuff
1:05:59We are out of time for today, with the determination to ask on the forums about the CMP0 setting and the XOR stuff
1:05:59We are out of time for today, with the determination to ask on the forums about the CMP0 setting and the XOR stuff