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PWM Speed Test (Cont.)
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Previous: 'Writing a PWM Speed Test'
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0:08Recap and set the stage for the day
0:08Recap and set the stage for the day
0:08Recap and set the stage for the day
0:32Point out a solution from the forum1 to build the Freedom E SDK
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0:32Point out a solution from the forum1 to build the Freedom E SDK
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0:32Point out a solution from the forum1 to build the Freedom E SDK
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2:26Compile and upload test.c to our HiFive1
2:26Compile and upload test.c to our HiFive1
2:26Compile and upload test.c to our HiFive1
5:02Connect to and reset our HiFive1, to see no output
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5:02Connect to and reset our HiFive1, to see no output
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5:02Connect to and reset our HiFive1, to see no output
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6:22Use PWM0_REG rather than PWM1_REG
6:22Use PWM0_REG rather than PWM1_REG
6:22Use PWM0_REG rather than PWM1_REG
7:43Compile, upload and run test.c to see no output
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7:43Compile, upload and run test.c to see no output
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7:43Compile, upload and run test.c to see no output
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8:51Try to print "Hello, World!" before entering the busy-loop
8:51Try to print "Hello, World!" before entering the busy-loop
8:51Try to print "Hello, World!" before entering the busy-loop
9:47Run our program and see no output
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9:47Run our program and see no output
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9:47Run our program and see no output
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12:21Simplify test.c down to the absolute essentials for printing
12:21Simplify test.c down to the absolute essentials for printing
12:21Simplify test.c down to the absolute essentials for printing
13:26Try to run our program and still see no output
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13:26Try to run our program and still see no output
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13:26Try to run our program and still see no output
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14:32Append '\r' to our string
14:32Append '\r' to our string
14:32Append '\r' to our string
15:25Run our program and again see no output
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15:25Run our program and again see no output
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15:25Run our program and again see no output
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16:26Set up the UART
16:26Set up the UART
16:26Set up the UART
17:24Try to run our program and still see no output
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17:24Try to run our program and still see no output
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17:24Try to run our program and still see no output
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18:08Make test.c wait for the HiFive1 to settle
18:08Make test.c wait for the HiFive1 to settle
18:08Make test.c wait for the HiFive1 to settle
18:51Try to run our program and still see no output
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18:51Try to run our program and still see no output
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18:51Try to run our program and still see no output
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19:44Pass our "Hello, World!" string to _puts() as a variable
19:44Pass our "Hello, World!" string to _puts() as a variable
19:44Pass our "Hello, World!" string to _puts() as a variable
21:08Try to run our program and still see no output
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21:08Try to run our program and still see no output
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21:08Try to run our program and still see no output
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22:21Compile, upload and run led_fade to determine that our upload is not working, and investigate why
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22:21Compile, upload and run led_fade to determine that our upload is not working, and investigate why
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22:21Compile, upload and run led_fade to determine that our upload is not working, and investigate why
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25:41Peruse the forums for information on upload failures2
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25:41Peruse the forums for information on upload failures2
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25:41Peruse the forums for information on upload failures2
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29:04Try to upload the led_fade program in safe mode3
29:04Try to upload the led_fade program in safe mode3
29:04Try to upload the led_fade program in safe mode3
32:51Connect to and reset our HiFive1 to see the led_fade successfully running
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32:51Connect to and reset our HiFive1 to see the led_fade successfully running
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32:51Connect to and reset our HiFive1 to see the led_fade successfully running
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33:22Try to upload demo_gpio, and run it successfully
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33:22Try to upload demo_gpio, and run it successfully
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33:22Try to upload demo_gpio, and run it successfully
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35:26Try to upload our own test program, and run it successfully
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35:26Try to upload our own test program, and run it successfully
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35:26Try to upload our own test program, and run it successfully
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37:01Uncomment our PLIC_init() call, hit an error upon uploading, and investigate why
37:01Uncomment our PLIC_init() call, hit an error upon uploading, and investigate why
37:01Uncomment our PLIC_init() call, hit an error upon uploading, and investigate why
41:02Comment out the g_ext_interrupt_handlers initialisation
41:02Comment out the g_ext_interrupt_handlers initialisation
41:02Comment out the g_ext_interrupt_handlers initialisation
41:38Switch to safe boot mode, upload and successfully run our test program
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41:38Switch to safe boot mode, upload and successfully run our test program
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41:38Switch to safe boot mode, upload and successfully run our test program
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42:27Uncomment that g_ext_interrupt_handlers initialisation and try to determine how the interrupt handlers table should be set up
42:27Uncomment that g_ext_interrupt_handlers initialisation and try to determine how the interrupt handlers table should be set up
42:27Uncomment that g_ext_interrupt_handlers initialisation and try to determine how the interrupt handlers table should be set up
44:30Try to upload and run our test program, to see that we were doing it correctly after all
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44:30Try to upload and run our test program, to see that we were doing it correctly after all
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44:30Try to upload and run our test program, to see that we were doing it correctly after all
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45:04Try to pass a string literal to _puts()
45:04Try to pass a string literal to _puts()
45:04Try to pass a string literal to _puts()
47:48Upload and run our program successfully
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47:48Upload and run our program successfully
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47:48Upload and run our program successfully
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48:34Proceed to uncomment the PLIC_enable_interrupt() call and set up the PWM in ONESHOT mode
48:34Proceed to uncomment the PLIC_enable_interrupt() call and set up the PWM in ONESHOT mode
48:34Proceed to uncomment the PLIC_enable_interrupt() call and set up the PWM in ONESHOT mode
49:39Switch to safe boot mode, upload and run our program without success, and investigate why
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49:39Switch to safe boot mode, upload and run our program without success, and investigate why
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49:39Switch to safe boot mode, upload and run our program without success, and investigate why
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52:18Introduce mei_isr() and correctly set up the PLIC interrupt handler
52:18Introduce mei_isr() and correctly set up the PLIC interrupt handler
52:18Introduce mei_isr() and correctly set up the PLIC interrupt handler
59:58Read through trap_entry in entry.S
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59:58Read through trap_entry in entry.S
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59:58Read through trap_entry in entry.S
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1:05:28Consider how global_interrupts.c sets up the interrupt handlers
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1:05:28Consider how global_interrupts.c sets up the interrupt handlers
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1:05:28Consider how global_interrupts.c sets up the interrupt handlers
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1:10:19See how coreplexip-e31-arty/init.c sets up the localISR in handle_trap()
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1:10:19See how coreplexip-e31-arty/init.c sets up the localISR in handle_trap()
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1:10:19See how coreplexip-e31-arty/init.c sets up the localISR in handle_trap()
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1:13:09Wrap it up with the determination to dive into the assembly code
1:13:09Wrap it up with the determination to dive into the assembly code
1:13:09Wrap it up with the determination to dive into the assembly code
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Next: 'Studying entry.S'
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