zeptoforth

This patch-level release fixes a bug with the ADC for the stm32f411 platform where the temperature sensor and Vrefint ADC channels were enabled at the same time as the Vbat ADC channel by default, which is not permitted per design, and no means were provided to change this without manually modifying registers.

This release adds one-shot ADC support for the supported platforms. It also adds an optimization to compilation for the RP2040 (Raspberry Pi Pico). Note that there is a notable erratum for the STM32F407, STM32F411, and STM32F746, where when at least reading the temperature value, the first value reported by adc@ needs to be discarded; the reason for this is not clear so far.

This release adds UART support beyond mere console support with the uart module to all of the supported platforms, with the sole exception being that LPUART1 on the STM32L476 is not currently supported. Note that all of the supported UART's can have their baud rates changed, and can be accessed even when the console is set to swdcom.

This release also adds unofficial support for STM32F411 Nucleo 64 boards, which is activated by installing an STM32F411 "Black Pill" full, mini, full_swdcom, or mini_swdcom binary, rebooting, and then executing the following with a serial terminal set to 38400 (note that the baud is significant; the baud is not the default 115200 baud used by zeptoforth) or, if you installed an swdcom build, with swdcom:

compile-to-flash
true constant platform-nucleo64
reboot

After this the serial console will switch to 115200 baud, so one will need to close one's serial terminal and reopen it set to that baud unless you are using swdcom. Also, after this, the led module will be configured for use with the STM32F411 Nucleo 64. Note that another effect of making this change, even if you will be only using swdcom and not the serial console, is that the system clock will increase by a factor of 3.125, such that ms and other words that rely on the systick will count time correctly.

This release adds an ARMv6-M assembler (which can also be used on ARMv7-M platforms), adds /mod and u/mod for M4 and M7 platforms (they already existed for the RP2040), changes the order of display of .s to make it more standard, and adds ." and .\" at the REPL level (so they do not require one to be in a compilation state).

This release adds support for the STM32F411 "Black Pill" board.

This release reworks find and find-all so they no longer take masks (which in practice were unnecessary) and exposes looking up words by execution token to the user as find-by-xt.

This patch-level release includes the ability to disable the output of ACK, NAK, and BEL. It also adds the ability to use page up and page down to switch blocks in the block editor.

This patch-level release fixes depth so it does not include the value at the bottom of the data stack (which is a garbage value) and .s so it does not print it, and on the Raspberry Pi Pico restores stack validation in the outer interpreter.

This release adds a new uart module for the Raspberry Pi Pico for controlling both UART's in the RP2040, including being able to set the baud rate. It also fixes a bug in flush-console which was causing it to lock up the current task.

Fixed a bug in unused that was causing it to malfunction and also fixed a minor bug in the led module for the rp2040 platform that was causing it to incorrectly accept 1 as a valid LED index.