About AA1

AA1 · 2024-04-26

1. According to datasheet, STM32U0 family have an IRTIM (Infrared interface). But this section is missing in RM0503. Also in SYSCFG_CFGR1 there is missing IR_MOD and IR_POL bits.2. In RTC section Figure 297 it is missing RTC_OUT2 and RTC_REFIN pins. ...

AA1 · 2022-07-04

Cortex-M0 programming manual have several instructions like this:You can use the LSR ...When the instruction is LSRS, the carry flag is updated ...But I believe that on Cortex-M0, there is no optional 'S' appended to instructions to update flags. Ins...

AA1 · 2022-02-14

Hi,I need clarification of errata, "Interrupt service routine (ISR) executed with priority of main process".I don't understand in which cases this limitation can occur.I don't understand why the workaround used for STM8S (put a SIM instruction at the...

AA1 · 2021-10-07

Hi,Reference: AN5179 - RS232 communications with a terminal using the STM8 Nucleo-64 boardshttps://www.st.com/resource/en/application_note/dm00513075-rs232-communications-with-a-terminal-using-the-stm8-nucleo64-boards-stmicroelectronics.pdfAN5179 pag...

AA1 · 2024-12-01

I am not familiar with EEPRMA2_M24_* functions. But I am with I2C EEPROMs.If EEPROM is M24C04, why are you using EEPRMA2_M24C02_0?Other problem could be the possible confusion between device address and internal EEPROM address. As EEPROM is M24C04 it...

AA1 · 2024-11-26

I found more issues.RM page 163: register RCC_ICSCR should be replaced by registers are RCC_CR and RCC_CFGR.Page 163: TIM17 should be removed because it doesn't exist.Page 170: CEC should be removed because STM32U0 doesn't have HDMI-CEC.Page 162: LSE...

AA1 · 2024-11-23

I don't understand what are ADC counts.AFR2 = 0x04. NAFR2 = ~0x04 = 0xFB. But AFR2/NAFR2 are not registers. They are option bytes and are in EEPROM. By now write them with STVP.RM0016 page 440 explains well data alignment and how to read the result o...

AA1 · 2024-11-21

This is already reported here with other issues: Missing section IRTIM in STM32U0 RM and more.

AA1 · 2024-11-11

The MCU is stm8l152c6 but it only have USART1 as I said before.

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Missing section IRTIM in STM32U0 RM and more.

Possible error in Cortex-M0 programming manual.

Need clarification of errata, "Interrupt service routine (ISR) executed with priority of main process".

RS232 communication with a terminal using STM8L-DISCOVERY.

Re: M24C04-EEPROM CHIP

Re: Missing section IRTIM in STM32U0 RM and more.

Re: STM8S001J3 ADC AIN2 Configuration and Alignment Behavior in STM8S001J3 MCU

Re: STM32U0 reference manual inconsistent? (exti lines and nvic)

Re: stm8l uart1 works but uart2 doesn't work