Investigating handle_m_time_interrupt ⚠ Click here to regain focus ⚠
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0:08Recap and set the stage for the day, with a special shout-out to Andrew Waterman
0:08Recap and set the stage for the day, with a special shout-out to Andrew Waterman
0:08Recap and set the stage for the day, with a special shout-out to Andrew Waterman
3:05Dive back into demo_gpio.c and look into setting mtimecmp to operate on an arbitrary thread
3:05Dive back into demo_gpio.c and look into setting mtimecmp to operate on an arbitrary thread
3:05Dive back into demo_gpio.c and look into setting mtimecmp to operate on an arbitrary thread
4:48Understanding shifting with relation to the memory addresses
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4:48Understanding shifting with relation to the memory addresses
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4:48Understanding shifting with relation to the memory addresses
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9:01Jumping in increments, using multiplication
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9:01Jumping in increments, using multiplication
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9:01Jumping in increments, using multiplication
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11:44A few words on traditional mathematics vs bitwise operations
11:44A few words on traditional mathematics vs bitwise operations
11:44A few words on traditional mathematics vs bitwise operations
14:01Continue reading reset_demo()
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14:01Continue reading reset_demo()
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14:01Continue reading reset_demo()
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15:57Refresh our memories on the Real-Time Clock frequency1
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15:57Refresh our memories on the Real-Time Clock frequency1
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15:57Refresh our memories on the Real-Time Clock frequency1
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21:38Consult the documentation on mtime and mtimecmp2
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21:38Consult the documentation on mtime and mtimecmp2
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21:38Consult the documentation on mtime and mtimecmp2
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24:50Read deeply about the Real-Time Clock3
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24:50Read deeply about the Real-Time Clock3
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24:50Read deeply about the Real-Time Clock3
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29:50Wonder why we have both the RTC and the CLINT's mtime and mtimecmp methods
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29:50Wonder why we have both the RTC and the CLINT's mtime and mtimecmp methods
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29:50Wonder why we have both the RTC and the CLINT's mtime and mtimecmp methods
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31:34Come to understand handle_m_time_interrupt() in demo_gpio.c
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31:34Come to understand handle_m_time_interrupt() in demo_gpio.c
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31:34Come to understand handle_m_time_interrupt() in demo_gpio.c
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34:51Investigate how it knows to call handle_m_time_interrupt(), and remain bamboozled
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34:51Investigate how it knows to call handle_m_time_interrupt(), and remain bamboozled
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34:51Investigate how it knows to call handle_m_time_interrupt(), and remain bamboozled
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40:07hossein1387 The handle_m_time_interrupt() is defined in init.c
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40:07hossein1387 The handle_m_time_interrupt() is defined in init.c
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40:07hossein1387 The handle_m_time_interrupt() is defined in init.c
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40:36Find handle_m_time_interrupt() in env/freedom-e300-hifive/init.c and investigate what it compiles down to
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40:36Find handle_m_time_interrupt() in env/freedom-e300-hifive/init.c and investigate what it compiles down to
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40:36Find handle_m_time_interrupt() in env/freedom-e300-hifive/init.c and investigate what it compiles down to
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43:30Discover that handle_trap() is responsible for calling handle_m_time_interrupt()
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43:30Discover that handle_trap() is responsible for calling handle_m_time_interrupt()
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43:30Discover that handle_trap() is responsible for calling handle_m_time_interrupt()
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47:17Consider how trap_entry is working
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47:17Consider how trap_entry is working
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47:17Consider how trap_entry is working
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49:49hossein1387 Okay, I think I know what's happening. The trap_entry is defined in entry.S
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49:49hossein1387 Okay, I think I know what's happening. The trap_entry is defined in entry.S
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49:49hossein1387 Okay, I think I know what's happening. The trap_entry is defined in entry.S
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50:50Find a handle_trap call in env/entry.S
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50:50Find a handle_trap call in env/entry.S
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50:50Find a handle_trap call in env/entry.S
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51:34hossein1387 Also take a look at start.S in the same folder
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51:34hossein1387 Also take a look at start.S in the same folder
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51:34hossein1387 Also take a look at start.S in the same folder
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51:51Summarise how handle_trap() works
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51:51Summarise how handle_trap() works
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51:51Summarise how handle_trap() works
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53:39Begin to understand env/start.S
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53:39Begin to understand env/start.S
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53:39Begin to understand env/start.S
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53:49Program entry point
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53:49Program entry point
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53:49Program entry point
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54:39Our actual entry point in start.S
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54:39Our actual entry point in start.S
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54:39Our actual entry point in start.S
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56:15We will continue tomorrow
56:15We will continue tomorrow
56:15We will continue tomorrow