About patrickwright

patrickwright · 2023-11-10

I am using an STM32L562VET6Q. My device contains both a (custom) bootloader and an application. The bootloader jumps into the application by reading the address of the Reset_Handler from the application's ISR vector then branching to this address. ...

patrickwright · 2023-11-09

I am using an STM32L562VET6Q MCU. I have been having issues getting a valid reading from the ADC. The signal is essentially DC (i.e., no fast high frequency measurements) so I conservatively set the ADC sampling time to its maximum. My reference v...

patrickwright · 2023-11-08

Our product uses an STM32L562VET6Q MCU. We are using an ADC to measure current via a 1ohm resistor. Because the currents are relatively small, I want to use the internal opamp in PGA mode to double the input signal before it is send to the ADC. I ...

patrickwright · 2023-11-10

I invalidate the ICACHE (but still leave it enabled) before branching into the application. And yes, the application re-enables the ICACHE.::__DSB();::__ISB();LL_APB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_ICACHE);LL_ICACHE_Invalidate();intImage->imag...

patrickwright · 2023-11-10

I am using a clock speed of 110MHz and voltage scale 0. According to Table 32 in the reference manual, I should have the latency set to 5. I have verified that the bootloader is setting the latency to 5 (I verified the code and read out the ACR reg...

patrickwright · 2023-11-10

In response to your suggestions:1) I should be able to test this in a temperature chamber, but it may take some time to get everything set up.2) How do I generate a dump of the ICACHE? I thought this was internal to the core so I wasn't aware there ...

patrickwright · 2023-11-09

Here is a snipped of the relevant portion of the schematic: The ADC is being used to measure the current drawn by an attached device (between the STR_PWR+ and STR_PWR- pins) via a 1ohm resistor. The ADC pin is connected directly to the STROBE_MEAS p...

patrickwright · 2023-11-09

Perhaps the following figure from the reference manual also helps to illustrate the problem:If this is accurate, it looks like the Analog signals are attached to the pin after all the port muxing/configuration of alternate functions. Assuming the OP...

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Undefined Instruction Hard Fault

ADC Readings Lower than Ideal

STM32L562VET6Q Opamp plus ADC reading invalid value when pin in alternate function mode

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Re: Undefined Instruction Hard Fault

Re: Undefined Instruction Hard Fault

Re: ADC Readings Lower than Ideal

Re: STM32L562VET6Q Opamp plus ADC reading invalid value when pin in alternate function mode