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Finite State Machine and software layers Hello! I programed several times finite state machines to handle a gsm module. They worked fine, but I was never satisfied with the implementation. For example, to... |
Wednesday, 23 October 2019 - 15:23 |
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Multiple reset causes at the same time? I have a custom board with ATSAML21 and sometimes I detect a reset. The reset cause byte is 0x22 #define RSTC_RCAUSE_OFFSET 0x00 /**< \brief (... |
Tuesday, 10 April 2018 - 12:48 |
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Powering SAML21 from 3.6 battery and voltage drops Hello! I'm creating a device where the battery replacement is an issue. The device is a temperature sensor, a SAML21 uC and a Sigfox module. The uC wakes every n seconds,... |
Wednesday, 14 March 2018 - 18:12 |
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What are the best practices for WDT and BOD in low power mode? Hello! I have a low power project with a SAML21 powered by 2 AA cells. The mcu wakes up every 2 seconds to measure, and in case of a change of state, transmit data to my... |
Tuesday, 20 February 2018 - 14:31 |
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FATFS+AT45: at45dbx_mem.h no such file I'm trying to mount a fat filesystem on a custom board with an AT45DBX memory chip. The uC is ATSAMR21E18 There is no example on FATFS+AT45DBX, only USB or MMC. If I open... |
Tuesday, 2 May 2017 - 20:37 |
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FatFS + Virtual Memory in RAM Hi! I'm trying to test the FatFS in a virtual memory disk with SAMD21 Xplained pro. I found no example on Virtual Memory ASF module but found FatFS with MMC. So I modified... |
Tuesday, 25 April 2017 - 20:59 |
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50 ohms using power plane instead of ground plane? Hello! I have several boards with 50 ohm traces in 4-layer pcbs. my stack layer is usually top, ground, power, bottom. The 50 ohms traces should be in the top layer... |
Wednesday, 29 March 2017 - 20:59 |
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how to choose wisely the interrupt priorities? Hello! I'm working on a project that uses lot of hardware: four serial ports, one spi, one i2c, 5 ADC inputs. What I want to know is the right way to choose the priority of... |
Monday, 30 May 2016 - 00:30 |
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Printing special characters in a terminal window Hello! I'm having some issues printing special characters via serial port. Same happens with tera term and putty. When I try to print special characters such as ñ, ¿,... |
Wednesday, 13 April 2016 - 15:24 |
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usart callback on RX not firing Hello! This is my first post in ARM. I have some experience with AVR and now I'm trying for the first time an ARM Cortex M0 (ATSAMD20J18). I started a new... |
Thursday, 10 March 2016 - 21:45 |
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solderable micro-sd? Hello! I need to use some flash storage in a corte-m0 uC. I want to use ASF to create a filesystem and forget about designing the driver for a flash memory. ASF supports... |
Thursday, 17 December 2015 - 22:18 |
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Literature for state machines in GSM comm modules Hello! I'm working on several projects with simcom modules (AT commands, cell phone and TCP / UDP). They are all working fine, but I want to learn more about state machines... |
Friday, 11 December 2015 - 15:26 |