One second LED flasher - Revision history

DavidA at 14:14, 5 August 2019

2019-08-05T14:14:09Z

2018-01-02T15:03:05Z

2018-01-02T15:01:11Z

PIC Specific

2017-10-09T11:09:27Z

2017-10-09T11:09:00Z

2017-10-09T11:08:36Z

PIC Specific

2016-09-19T13:48:54Z

AVR Specific

2016-09-19T13:47:29Z

AVR Specific

2016-09-19T13:47:21Z

2016-09-19T13:46:31Z

← Older revision		Revision as of 14:14, 5 August 2019
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	Here is a example of a one second flasher program.		Here is a example of a one second flasher program.

−	[[File:~~OneSecFlash~~.~~jpg~~]]	+	[[File:Led-flasher-ss-1.png]]

← Older revision		Revision as of 15:03, 2 January 2018
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	For an 16-bit PIC device a crystal oscillator below 10MHz is the XT option, 10MHz or above is the HS option. High speed devices may require a PLL to be configured via the configuration settings or enabled using a C code icon at the start of your program.		For an 16-bit PIC device a crystal oscillator below 10MHz is the XT option, 10MHz or above is the HS option. High speed devices may require a PLL to be configured via the configuration settings or enabled using a C code icon at the start of your program.

−	~~Example PLL C code for a dsPIC33EP device running at 140MHz from an 8MHz oscillator.~~

		+	Example PLL C code for a dsPIC33EP device running at 140MHz (70MIPs) from an 8MHz oscillator.

	//Setup configuration for 70MIPs using 8MHz Crystal		//Setup configuration for 70MIPs using 8MHz Crystal

@@ Line 27: / Line 27: @@
 ==PIC Specific==
 For an 8-bit PIC device a crystal oscillator below 4MHz is the XT option, 4MHz or above is the HS option.
 For an 16-bit PIC device a crystal oscillator below 10MHz is the XT option, 10MHz or above is the HS option.
 Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require. The [[Component:_IntOsc_Helper_(Matrix_Tools)|INTOSC Helper]] component will help you determine the required C code.

@@ Line 32: / Line 32: @@
 For an 16-bit PIC device a crystal oscillator below 10MHz is the XT option, 10MHz or above is the HS option.
-Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require. The [[INTOSC Helper|Component:_IntOsc_Helper_(Matrix_Tools)]] component will help you determine the required C code.
+Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require. The [[Component:_IntOsc_Helper_(Matrix_Tools)|INTOSC Helper]] component will help you determine the required C code.
 ==AVR Specific==

@@ Line 32: / Line 32: @@
 For an 16-bit PIC device a crystal oscillator below 10MHz is the XT option, 10MHz or above is the HS option.
-Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require. The [INTOSC Helper|Component:_IntOsc_Helper_(Matrix_Tools)] component will help you determine the required C code.
+Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require. The [[INTOSC Helper|Component:_IntOsc_Helper_(Matrix_Tools)]] component will help you determine the required C code.
 ==AVR Specific==

← Older revision		Revision as of 13:48, 19 September 2016
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	Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.		Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.
		+
		+	Arduino devices should come pre-programmed with the right configuration settings and bootloader. The serial interface is required to re-program the bootloader if required.

← Older revision		Revision as of 13:47, 19 September 2016
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	==AVR Specific==		==AVR Specific==

−	AVR hardware has a divide by 8 configuration setting which can often be enabled by default, e.g. if your 1 second delay is lasting 8 seconds. Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.	+	AVR hardware has a divide by 8 configuration setting which can often be enabled by default, e.g. if your 1 second delay is lasting 8 seconds.
		+
		+	Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.

@@ Line 24: / Line 24: @@
 Generally speaking the Watchdog timer, Low Voltage Programming and Extended CPU settings should all be set to disabled unless you specifically need the functionality they provide.
 For an 8-bit PIC device a crystal oscillator below 4MHz is the XT option, 4MHz or above is the HS option.
@@ Line 30: / Line 33: @@
 Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require.
 AVR hardware has a divide by 8 configuration setting which can often be enabled by default, e.g. if your 1 second delay is lasting 8 seconds. Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.

← Older revision		Revision as of 13:46, 19 September 2016
Line 31:		Line 31:
	Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require.		Internal clock speeds will vary depending on your device and may need a C code icon at the start of your program to configure them correctly to the frequency you require.

−	AVR hardware has a divide by 8 configuration setting which can often be enabled by default, e.g. if your 1 second delay is lasting 8 seconds. Do not disable the SPI in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.	+	AVR hardware has a divide by 8 configuration setting which can often be enabled by default, e.g. if your 1 second delay is lasting 8 seconds. Do not disable the SPI clock in the AVR configuration as this will effectively disable the serial programming interface used by the AVRISP mkII and TinyISP etc.