On Wed, Apr 15, 2020 at 4:08 PM Gregory Nutt <spudan...@gmail.com> wrote:
> This document address migration from F1 to F3 and addresses all major
> differences between F1 and F3: AN4228, Application note, Migrating from
> STM32F1 Series to STM32F3 Series microcontrollers. Table 6 address every
> peripheral.
Ok, I'll look at that.
Meanwhile... So I've been studying, toward making a decision, whether
to try implementing this in the stm32 directory or create a new one
for stm32g4... I probably won't know which is better and which is less
(or more!) work until I actually start writing code.
As I'm looking at STM32F3 parts we support and compare to STM32G474,
it seems the STM32F334 has the most similarities to this new part.
Comparison:
(At least what I know so far...)
Both have GPIO ports ABCF. STM32G474CxT adds port G but only for
PG10-NRST. That is, the reset pin can be used as a GPIO.
Analog: the STM32G474Cxt is heavy on analog features with much more
ADC, DAC, COMP, and OPAMP peripherals and pins than the STM32F3. These
features are obviously new IP as the ADC adds Hardware Oversampling,
IO Voltage Booster, Gain Compensation, Bulb Sampling, Sampling Time
Control Trigger, Dual Interleaved Sampling, new Analog Watchdog
features. The DAC adds Sample and Hold, and also Internal DACs that
can be connected to other internal peripherals, e.g., to a COMP or
OPAMP. And there's much more. [1]
Timers: Both have HRTIM, but the STM32F334 has HRTIM IP version 1.0
while STM32G474Cxt has HRTIM IP version 2.0. This adds various
features and capabilities, described in [2]. Also, the G4 more of the
regular resolution timers.
Communication: STM32F334 has CAN. STM32G474CxT has FDCAN1, FDCAN2,
FDCAN3. STM32G474CxT has LPTIM, LPUART, SAI, USB. Also, more I2C and
SPI.
Side-by-side comparison of Ports, Pins, and Peripherals:
Ports:
===============================
STM32G474CxTx | STM32F334CxTx
===============================
PORT_A | PORT_A
PORT_B | PORT_B
PORT_C | PORT_C
PORT_F | PORT_F
PORT_G | - x -
-------------------------------
Pins:
===============================
STM32G474CxTx | STM32F334CxTx
===============================
PA0 | PA0
PA1 | PA1
PA2 | PA2
PA3 | PA3
PA4 | PA4
PA5 | PA5
PA6 | PA6
PA7 | PA7
PA8 | PA8
PA9 | PA9
PA10 | PA10
PA11 | PA11
PA12 | PA12
PA13 | PA13
PA14 | PA14
PA15 | PA15
-------------------------------
PB0 | PB0
PB1 | PB1
PB2 | PB2
PB3 | PB3
PB4 | PB4
PB5 | PB5
PB6 | PB6
PB7 | PB7
PB8-BOOT0 | PB8
PB9 | PB9
PB10 | PB10
PB11 | PB11
PB12 | PB12
PB13 | PB13
PB14 | PB14
PB15 | PB15
-------------------------------
PC13 | PC13
PC14-OSC32_IN | PC14-OSC32_IN
PC15-OSC32_OUT | PC15-OSC32_OUT
-------------------------------
PF0-OSC_IN | PF0-OSC_IN
PF1-OSC_OUT | PF1-OSC_OUT
-------------------------------
PG10-NRST | - x -
-------------------------------
Peripherals:
===============================
STM32G474CxTx | STM32F334CxTx
===============================
ADC1 | ADC1
ADC2 | ADC2
ADC3 | - x -
ADC4 | - x -
ADC5 | - x -
- x - | CAN
COMP1 | - x -
COMP2 | COMP2
COMP3 | - x -
COMP4 | COMP4
COMP5 | - x -
COMP6 | COMP6
COMP7 | - x -
CRS | - x -
DAC1 | DAC1
DAC2 | DAC2
DAC3 | - x -
DAC4 | - x -
FDCAN1 | - x -
FDCAN2 | - x -
FDCAN3 | - x -
HRTIM1 | HRTIM1
I2C1 | I2C1
I2C2 | - x -
I2C3 | - x -
I2C4 | - x -
I2S | - x -
I2S2 | - x -
I2S3 | - x -
IR | IR
LPTIM1 | - x -
LPUART1 | - x -
OPAMP1 | - x -
OPAMP2 | OPAMP2
OPAMP3 | - x -
OPAMP4 | - x -
OPAMP5 | - x -
OPAMP6 | - x -
QUADSPI1 | - x -
RCC | RCC
RTC | RTC
SAI1 | - x -
SPI1 | SPI1
SPI2 | - x -
SPI3 | - x -
SYS | SYS
TIM1 | TIM1
TIM15 | TIM15
TIM16 | TIM16
TIM17 | TIM17
TIM2 | TIM2
TIM20 | - x -
TIM3 | TIM3
TIM4 | - x -
TIM5 | - x -
TIM8 | - x -
- x - | TSC
UCPD1 | - x -
USART1 | USART1
USART2 | USART2
USART3 | USART3
USB | - x -
-------------------------------
References:
[1] STM32F3 vs STM32G4 Analog: AN5310:
https://www.st.com/content/ccc/resource/technical/document/application_note/group1/0e/97/a6/8e/6b/bd/49/40/DM00607955/files/DM00607955.pdf/jcr:content/translations/en.DM00607955.pdf
[2] HRTIM differences: AN4539 Rev4, page 7, and Appendices:
https://www.st.com/content/ccc/resource/technical/document/application_note/13/d6/48/9d/11/11/4c/08/DM00121475.pdf/files/DM00121475.pdf/jcr:content/translations/en.DM00121475.pdf
Cheers,
Nathan
