Crate ufmt_stdio

Minimal printing facilities for ufmt

Supported platforms:

• wasm via wasm-bindings;
• mos microprocessors via linking putchar;
• riscv32 via esp-* features (see details in Features section) or being no-op otherwise;
• All other platforms are built upon standard C library write function.

Features

• esp-uart - Enables UART writer on riscv32 targets. Mutually exclusive with esp-jtag. Requires user to provide symbols:
  • ESP_UART_ADDR (e.g. on ESP32-C3 it is #[no_mangle] static ESP_UART_ADDR: usize = 0x40000068).
• esp-jtag - Enables JTAG writer on riscv32 targets. Mutually exclusive with esp-jtag. Requires user to provide symbols:
  • SERIAL_JTAG_FIFO_REG (e.g. on ESP32-C3 it is #[no_mangle] static SERIAL_JTAG_FIFO_REG: usize = 0x60043000)
  • SERIAL_JTAG_CONF_REG (e.g. on ESP32-C3 it is #[no_mangle] static SERIAL_JTAG_CONF_REG: usize = 0x60043004).

Re-exports

• pub extern crate ufmt;

Macros

• d_print
  Prints to the stdout in debug mode only
• d_println
  Prints to the stdout with newline in debug mode only
• eprint
  Prints to the stderr
• eprintln
  Prints to the stderr with newline
• print
  Prints to the stdout
• println
  Prints to the stdout with newline
• uwrite
• uwriteln

Structs

• Stderr
  Stderr wrapper
• Stdout
  Stdout wrapper

Traits

• uDebug
  Just like core::fmt::Debug
• uDisplay
  Just like core::fmt::Display
• uWrite
  A collection of methods that are required / used to format a message into a stream.

Functions

• init
  Initializes runtime, when necessary.