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modtrezorui: introduce display_printf, use where possible

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This commit is contained in:
Pavol Rusnak 2017-04-28 19:50:51 +02:00
parent 19cd626fc9
commit 367fe8952c
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GPG Key ID: 91F3B339B9A02A3D
14 changed files with 376 additions and 108 deletions
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1
Makefile.boardloader
View File

@ -77,6 +77,7 @@ OBJ_TREZORHAL += $(addprefix $(BUILD_FW)/, \
trezorhal/common.o \
trezorhal/image.o \
trezorhal/flash.o \
trezorhal/mini_printf.o \
trezorhal/sdcard.o \
trezorhal/stm32_it.o \
trezorhal/stm32_system.o \

1
Makefile.bootloader
View File

@ -86,6 +86,7 @@ OBJ_TREZORHAL += $(addprefix $(BUILD_FW)/, \
trezorhal/common.o \
trezorhal/image.o \
trezorhal/flash.o \
trezorhal/mini_printf.o \
trezorhal/stm32_it.o \
trezorhal/stm32_system.o \
trezorhal/touch.o \

1
Makefile.firmware
View File

@ -317,6 +317,7 @@ OBJ_FIRMWARE += $(addprefix $(BUILD_FW)/, \
OBJ_TREZORHAL += $(addprefix $(BUILD_FW)/, \
trezorhal/common.o \
trezorhal/flash.o \
trezorhal/mini_printf.o \
trezorhal/rng.o \
trezorhal/sdcard.o \
trezorhal/stm32_it.o \

49
micropython/boardloader/main.c
View File

@ -18,20 +18,20 @@ void pendsv_isr_handler(void) {
bool check_sdcard(void)
{
DPRINTLN("checking for SD card");
display_printf("checking for SD card\n");
if (!sdcard_is_present()) {
DPRINTLN("no SD card found");
display_printf("no SD card found\n");
return false;
}
DPRINTLN("SD card found");
display_printf("SD card found\n");
sdcard_power_on();
uint64_t cap = sdcard_get_capacity_in_bytes();
if (cap < 1024 * 1024) {
DPRINTLN("SD card too small");
display_printf("SD card too small\n");
sdcard_power_off();
return false;
}
@ -43,18 +43,17 @@ bool check_sdcard(void)
sdcard_power_off();
if (image_parse_header((const uint8_t *)buf, IMAGE_MAGIC, IMAGE_MAXSIZE, NULL)) {
DPRINTLN("SD card header is valid");
display_printf("SD card header is valid\n");
return true;
} else {
DPRINTLN("SD card header is invalid");
display_printf("SD card header is invalid\n");
return false;
}
}
bool copy_sdcard(void)
{
DPRINT("erasing flash ");
display_printf("erasing flash ");
// erase flash (except boardloader)
HAL_FLASH_Unlock();
@ -69,14 +68,14 @@ bool copy_sdcard(void)
EraseInitStruct.Sector = i;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK) {
HAL_FLASH_Lock();
DPRINTLN(" failed");
display_printf(" failed\n");
return false;
}
DPRINT(".");
display_printf(".");
}
DPRINTLN(" done");
display_printf(" done\n");
DPRINTLN("copying new bootloader from SD card");
display_printf("copying new bootloader from SD card\n");
sdcard_power_on();
@ -86,7 +85,7 @@ bool copy_sdcard(void)
image_header hdr;
if (!image_parse_header((const uint8_t *)buf, IMAGE_MAGIC, IMAGE_MAXSIZE, &hdr)) {
DPRINTLN("invalid header");
display_printf("invalid header\n");
sdcard_power_off();
HAL_FLASH_Lock();
return false;
@ -96,7 +95,7 @@ bool copy_sdcard(void)
sdcard_read_blocks((uint8_t *)buf, i, 1);
for (int j = 0; j < SDCARD_BLOCK_SIZE / sizeof(uint32_t); j++) {
if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, BOOTLOADER_START + i * SDCARD_BLOCK_SIZE + j * sizeof(uint32_t), buf[j]) != HAL_OK) {
DPRINTLN("copy failed");
display_printf("copy failed\n");
sdcard_power_off();
HAL_FLASH_Lock();
return false;
@ -107,36 +106,36 @@ bool copy_sdcard(void)
sdcard_power_off();
HAL_FLASH_Lock();
DPRINTLN("done");
display_printf("done\n");
return true;
}
void check_and_jump(void)
{
DPRINTLN("checking bootloader");
display_printf("checking bootloader\n");
image_header hdr;
if (image_parse_header((const uint8_t *)BOOTLOADER_START, IMAGE_MAGIC, IMAGE_MAXSIZE, &hdr)) {
DPRINTLN("valid bootloader header");
display_printf("valid bootloader header\n");
} else {
DPRINTLN("invalid bootloader header");
display_printf("invalid bootloader header\n");
return;
}
if (image_check_signature((const uint8_t *)BOOTLOADER_START, &hdr, NULL)) {
DPRINTLN("valid bootloader signature");
display_printf("valid bootloader signature\n");
// TODO: remove debug wait
DPRINTLN("waiting 1 second");
display_printf("waiting 1 second\n");
HAL_Delay(1000);
// end
DPRINTLN("JUMP!");
display_printf("JUMP!\n");
jump_to(BOOTLOADER_START + HEADER_SIZE);
} else {
DPRINTLN("invalid bootloader signature");
display_printf("invalid bootloader signature\n");
}
}
@ -160,9 +159,9 @@ int main(void)
display_clear();
display_backlight(255);
DPRINTLN("TREZOR Boardloader " VERSION_STR);
DPRINTLN("==================");
DPRINTLN("starting boardloader");
display_printf("TREZOR Boardloader %d.%d.%d.%d\n", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH, VERSION_BUILD);
display_printf("==================\n");
display_printf("starting boardloader\n");
if (check_sdcard()) {
if (!copy_sdcard()) {

5
micropython/boardloader/version.h
View File

@ -2,8 +2,3 @@
#define VERSION_MINOR 1
#define VERSION_PATCH 0
#define VERSION_BUILD 0
#define STR_HELPER(X) #X
#define STRINGIZE(X) STR_HELPER(X)
#define VERSION_STR STRINGIZE(VERSION_MAJOR) "." STRINGIZE(VERSION_MINOR) "." STRINGIZE(VERSION_PATCH) "." STRINGIZE(VERSION_BUILD)

54
micropython/bootloader/main.c
View File

@ -11,6 +11,7 @@
#include "touch.h"
#include "usb.h"
#include "version.h"
#include "mini_printf.h"
#include "messages.h"
#include "protobuf.h"
@ -36,55 +37,56 @@ void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, ui
uint32_t datalen = *(uint32_t *)(vimg + 8);
display_image(60, 32, w, h, vimg + 12, datalen);
display_text_center(120, 192, vstr, vstr_len, FONT_BOLD, COLOR_WHITE, COLOR_BLACK);
char ver_str[] = "0.0.0.0";
// TODO: fixme - the following does not work for values >= 10
ver_str[0] += fw_version & 0xFF;
ver_str[2] += (fw_version >> 8) & 0xFF;
ver_str[4] += (fw_version >> 16) & 0xFF;
ver_str[6] += (fw_version >> 24) & 0xFF;
char ver_str[32];
mini_snprintf(ver_str, sizeof(ver_str), "%d.%d.%d.%d",
fw_version & 0xFF,
(fw_version >> 8) & 0xFF,
(fw_version >> 16) & 0xFF,
(fw_version >> 24) & 0xFF
);
display_text_center(120, 215, ver_str, -1, FONT_BOLD, COLOR_GRAY64, COLOR_BLACK);
display_refresh();
}
void check_and_jump(void)
{
DPRINTLN("checking vendor header");
display_printf("checking vendor header\n");
vendor_header vhdr;
if (vendor_parse_header((const uint8_t *)FIRMWARE_START, &vhdr)) {
DPRINTLN("valid vendor header");
display_printf("valid vendor header\n");
} else {
DPRINTLN("invalid vendor header");
display_printf("invalid vendor header\n");
return;
}
if (vendor_check_signature((const uint8_t *)FIRMWARE_START, &vhdr)) {
DPRINTLN("valid vendor header signature");
display_printf("valid vendor header signature\n");
} else {
DPRINTLN("invalid vendor header signature");
display_printf("invalid vendor header signature\n");
return;
}
DPRINTLN("checking firmware header");
display_printf("checking firmware header\n");
image_header hdr;
if (image_parse_header((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen), IMAGE_MAGIC, IMAGE_MAXSIZE, &hdr)) {
DPRINTLN("valid firmware header");
display_printf("valid firmware header\n");
} else {
DPRINTLN("invalid firmware header");
display_printf("invalid firmware header\n");
return;
}
if (image_check_signature((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen), &hdr, &vhdr)) {
DPRINTLN("valid firmware signature");
display_printf("valid firmware signature\n");
display_vendor(vhdr.vimg, (const char *)vhdr.vstr, vhdr.vstr_len, hdr.version);
HAL_Delay(1000); // TODO: remove?
DPRINTLN("JUMP!");
display_printf("JUMP!\n");
jump_to(FIRMWARE_START + vhdr.hdrlen + HEADER_SIZE);
} else {
DPRINTLN("invalid firmware signature");
display_printf("invalid firmware signature\n");
}
}
@ -175,7 +177,7 @@ uint32_t process_upload_message(uint32_t msg_size, const uint8_t *initbuf, uint3
process_upload_chunk(buf, 63);
remains -= USB_PACKET_SIZE;
}
DPRINTLN("done");
display_printf("done\n");
return 0; // should return >0 if more data required
}
@ -205,19 +207,19 @@ void mainloop(void)
}
switch (msg_id) {
case 0: // Initialize
DPRINTLN("received Initialize");
display_printf("received Initialize\n");
send_msg_Features(USB_IFACE_NUM, false);
break;
case 1: // Ping
DPRINTLN("received Ping");
display_printf("received Ping\n");
send_msg_Success(USB_IFACE_NUM);
break;
case 6: // FirmwareErase
DPRINTLN("received FirmwareErase");
display_printf("received FirmwareErase\n");
send_msg_FirmwareRequest(USB_IFACE_NUM, 0, UPLOAD_CHUNK_SIZE);
break;
case 7: // FirmwareUpload
DPRINTLN("received FirmwareUpload");
display_printf("received FirmwareUpload\n");
uint32_t req_offset = process_upload_message(msg_size, buf + PB_HEADER_LEN, USB_PACKET_SIZE - PB_HEADER_LEN);
if (req_offset > 0) {
send_msg_FirmwareRequest(USB_IFACE_NUM, req_offset, UPLOAD_CHUNK_SIZE);
@ -226,7 +228,7 @@ void mainloop(void)
}
break;
default:
DPRINTLN("received unknown message");
display_printf("received unknown message\n");
send_msg_Failure(USB_IFACE_NUM);
break;
}
@ -248,9 +250,9 @@ int main(void)
display_clear();
display_backlight(255);
DPRINTLN("TREZOR Bootloader " VERSION_STR);
DPRINTLN("=================");
DPRINTLN("starting bootloader");
display_printf("TREZOR Bootloader %d.%d.%d.%d\n", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH, VERSION_BUILD);
display_printf("=================\n");
display_printf("starting bootloader\n");
if (touch_read() != 0) {
mainloop();

9
micropython/bootloader/version.h
View File

@ -2,12 +2,3 @@
#define VERSION_MINOR 1
#define VERSION_PATCH 0
#define VERSION_BUILD 0
#define VERSION_MAJOR_CHAR "\x00"
#define VERSION_MINOR_CHAR "\x01"
#define VERSION_PATCH_CHAR "\x00"
#define STR_HELPER(X) #X
#define STRINGIZE(X) STR_HELPER(X)
#define VERSION_STR STRINGIZE(VERSION_MAJOR) "." STRINGIZE(VERSION_MINOR) "." STRINGIZE(VERSION_PATCH) "." STRINGIZE(VERSION_BUILD)

80
micropython/extmod/modtrezorui/display.c
View File

@ -20,7 +20,9 @@
#include "trezor-qrenc/qr_encode.h"
#include "display.h"
#include <string.h>
#include <stdarg.h>
static int DISPLAY_BACKLIGHT = 0;
static int DISPLAY_ORIENTATION = 0;
@ -29,6 +31,7 @@ static int DISPLAY_OFFSET[2] = {0, 0};
#if defined TREZOR_STM32
#include "display-stm32.h"
#elif defined TREZOR_UNIX
#include <stdio.h>
#include "display-unix.h"
#else
#error Unsupported TREZOR port. Only STM32 and UNIX ports are supported.
@ -240,11 +243,21 @@ static const uint8_t *get_glyph(uint8_t font, uint8_t c)
return 0;
}
#ifndef TREZOR_PRINT_DISABLE
#define DISPLAY_PRINT_COLS (DISPLAY_RESX / 6)
#define DISPLAY_PRINT_ROWS (DISPLAY_RESY / 8)
static char display_print_buf[DISPLAY_PRINT_ROWS][DISPLAY_PRINT_COLS];
static uint16_t display_print_fgcolor = COLOR_WHITE, display_print_bgcolor = COLOR_BLACK;
// display text using bitmap font - print to internal buffer
// set colors for display_print function
void display_print_color(uint16_t fgcolor, uint16_t bgcolor)
{
display_print_fgcolor = fgcolor;
display_print_bgcolor = bgcolor;
}
// display text using bitmap font
void display_print(const char *text, int textlen)
{
static uint8_t row = 0, col = 0;
@ -254,23 +267,27 @@ void display_print(const char *text, int textlen)
textlen = strlen(text);
}
// print characters to internal buffer (display_print_buf)
for (int i = 0; i < textlen; i++) {
switch (text[i]) {
case '\r':
break;
case '\n':
row++;
col = 0;
break;
default:
display_print_buf[row][col] = text[i];
col++;
break;
case '\r':
break;
case '\n':
row++;
col = 0;
break;
default:
display_print_buf[row][col] = text[i];
col++;
break;
}
if (col >= DISPLAY_PRINT_COLS) {
col = 0;
row++;
}
if (row >= DISPLAY_PRINT_ROWS) {
for (int j = 0; j < DISPLAY_PRINT_ROWS - 1; j++) {
memcpy(display_print_buf[j], display_print_buf[j + 1], DISPLAY_PRINT_COLS);
@ -278,11 +295,10 @@ void display_print(const char *text, int textlen)
memset(display_print_buf[DISPLAY_PRINT_ROWS - 1], 0x00, DISPLAY_PRINT_COLS);
row = DISPLAY_PRINT_ROWS - 1;
}
}
}
// display text using bitmap font - send internal buffer to display
void display_print_out(uint16_t fgcolor, uint16_t bgcolor) {
}
// render buffer to display
display_set_window(0, 0, DISPLAY_RESX - 1, DISPLAY_RESY - 1);
for (int i = 0; i < DISPLAY_RESX * DISPLAY_RESY; i++) {
int x = (i % DISPLAY_RESX);
@ -294,15 +310,41 @@ void display_print_out(uint16_t fgcolor, uint16_t bgcolor) {
if (c < ' ') c = ' ';
const uint8_t *g = Font_Bitmap + (5 * (c - ' '));
if (k < 5 && (g[k] & (1 << j))) {
DATA(fgcolor >> 8);
DATA(fgcolor & 0xFF);
DATA(display_print_fgcolor >> 8);
DATA(display_print_fgcolor & 0xFF);
} else {
DATA(bgcolor >> 8);
DATA(bgcolor & 0xFF);
DATA(display_print_bgcolor >> 8);
DATA(display_print_bgcolor & 0xFF);
}
}
display_refresh();
}
#ifndef TREZOR_UNIX
extern int mini_vsnprintf(char* buffer, unsigned int buffer_len, const char *fmt, va_list va);
#endif
// variadic display_print
void display_printf(const char *fmt, ...)
{
if (!strchr(fmt, '%')) {
display_print(fmt, strlen(fmt));
} else {
va_list va;
va_start(va, fmt);
char buf[256];
#ifndef TREZOR_UNIX
int len = mini_vsnprintf(buf, sizeof(buf), fmt, va);
#else
int len = vsnprintf(buf, sizeof(buf), fmt, va);
#endif
display_print(buf, len);
va_end(va);
}
}
#endif // TREZOR_PRINT_DISABLE
// first two bytes are width and height of the glyph
// third, fourth and fifth bytes are advance, bearingX and bearingY of the horizontal metrics of the glyph
// rest is packed 4-bit glyph data

5
micropython/extmod/modtrezorui/display.h
View File

@ -51,8 +51,11 @@ void display_bar_radius(int x, int y, int w, int h, uint16_t c, uint16_t b, uint
void display_image(int x, int y, int w, int h, const void *data, int datalen);
void display_icon(int x, int y, int w, int h, const void *data, int datalen, uint16_t fgcolor, uint16_t bgcolor);
#ifndef TREZOR_PRINT_DISABLE
void display_print_color(uint16_t fgcolor, uint16_t bgcolor);
void display_print(const char *text, int textlen);
void display_print_out(uint16_t fgcolor, uint16_t bgcolor);
void display_printf(const char *fmt, ...);
#endif
void display_text(int x, int y, const char *text, int textlen, uint8_t font, uint16_t fgcolor, uint16_t bgcolor);
void display_text_center(int x, int y, const char *text, int textlen, uint8_t font, uint16_t fgcolor, uint16_t bgcolor);

11
micropython/extmod/modtrezorui/modtrezorui-display.h
View File

@ -126,22 +126,19 @@ STATIC mp_obj_t mod_TrezorUi_Display_icon(size_t n_args, const mp_obj_t *args) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorUi_Display_icon_obj, 6, 6, mod_TrezorUi_Display_icon);
/// def trezor.ui.display.print(text: str, fgcolor: int, bgcolor: int) -> None:
/// def trezor.ui.display.print(text: str) -> None:
/// '''
/// Renders text using 5x8 bitmap font (using special text mode)
/// '''
STATIC mp_obj_t mod_TrezorUi_Display_print(size_t n_args, const mp_obj_t *args) {
STATIC mp_obj_t mod_TrezorUi_Display_print(mp_obj_t self, mp_obj_t text) {
mp_buffer_info_t buf;
mp_get_buffer_raise(args[1], &buf, MP_BUFFER_READ);
mp_int_t fgcolor = mp_obj_get_int(args[2]);
mp_int_t bgcolor = mp_obj_get_int(args[3]);
mp_get_buffer_raise(text, &buf, MP_BUFFER_READ);
if (buf.len > 0) {
display_print(buf.buf, buf.len);
}
display_print_out(fgcolor, bgcolor);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorUi_Display_print_obj, 4, 4, mod_TrezorUi_Display_print);
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorUi_Display_print_obj, mod_TrezorUi_Display_print);
/// def trezor.ui.display.text(x: int, y: int, text: str, font: int, fgcolor: int, bgcolor: int) -> None:
/// '''

17
micropython/trezorhal/common.c
View File

@ -4,18 +4,15 @@
#include "display.h"
void __attribute__((noreturn)) __fatal_error(const char *msg, const char *file, int line, const char *func) {
for (volatile uint32_t delay = 0; delay < 10000000; delay++) {
}
display_print("\nFATAL ERROR:\n", -1);
display_print(msg, -1);
for (volatile uint32_t delay = 0; delay < 10000000; delay++) {}
display_print_color(COLOR_WHITE, COLOR_RED128);
display_printf("\nFATAL ERROR:\n%s\n", msg);
if (file) {
display_print("\nFile: ", -1); display_print(file, -1); (void)line;
display_printf("File: %s:%d\n", file, line);
}
if (func) {
display_print("\nFunc: ", -1); display_print(func, -1);
display_printf("Func: %s\n", func);
}
display_print("\n", 1);
display_print_out(COLOR_WHITE, COLOR_RED128);
for (;;) {
display_backlight(255);
HAL_Delay(950);
@ -26,9 +23,7 @@ void __attribute__((noreturn)) __fatal_error(const char *msg, const char *file,
#ifndef NDEBUG
void __assert_func(const char *file, int line, const char *func, const char *expr) {
display_print("\nassert(", -1);
display_print(expr, -1);
display_print(")\n", 2);
display_printf("\nassert(%s)\n", expr);
__fatal_error("Assertion failed", file, line, func);
}
#endif

5
micropython/trezorhal/common.h
View File

@ -16,9 +16,4 @@ void __attribute__((noreturn)) nlr_jump_fail(void *val);
void jump_to(uint32_t address);
// common helper macros
#define DPRINT(X) do { display_print(X, -1); display_print_out(COLOR_WHITE, COLOR_BLACK); } while(0)
#define DPRINTLN(X) do { display_print(X "\n", -1); display_print_out(COLOR_WHITE, COLOR_BLACK); } while(0)
#endif

199
micropython/trezorhal/mini_printf.c Normal file
View File

@ -0,0 +1,199 @@
/*
* The Minimal snprintf() implementation
*
* Copyright (c) 2013,2014 Michal Ludvig <michal@logix.cz>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the auhor nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ----
*
* This is a minimal snprintf() implementation optimised
* for embedded systems with a very limited program memory.
* mini_snprintf() doesn't support _all_ the formatting
* the glibc does but on the other hand is a lot smaller.
* Here are some numbers from my STM32 project (.bin file size):
* no snprintf(): 10768 bytes
* mini snprintf(): 11420 bytes (+ 652 bytes)
* glibc snprintf(): 34860 bytes (+24092 bytes)
* Wasting nearly 24kB of memory just for snprintf() on
* a chip with 32kB flash is crazy. Use mini_snprintf() instead.
*
*/
#include <string.h>
#include <stdarg.h>
#include "mini_printf.h"
static unsigned int
mini_strlen(const char *s)
{
unsigned int len = 0;
while (s[len] != '\0') len++;
return len;
}
static unsigned int
mini_itoa(int value, unsigned int radix, unsigned int uppercase, unsigned int unsig,
char *buffer, unsigned int zero_pad)
{
char *pbuffer = buffer;
int negative = 0;
unsigned int i, len;
/* No support for unusual radixes. */
if (radix > 16)
return 0;
if (value < 0 && !unsig) {
negative = 1;
value = -value;
}
/* This builds the string back to front ... */
do {
int digit = value % radix;
*(pbuffer++) = (digit < 10 ? '0' + digit : (uppercase ? 'A' : 'a') + digit - 10);
value /= radix;
} while (value > 0);
for (i = (pbuffer - buffer); i < zero_pad; i++)
*(pbuffer++) = '0';
if (negative)
*(pbuffer++) = '-';
*(pbuffer) = '\0';
/* ... now we reverse it (could do it recursively but will
* conserve the stack space) */
len = (pbuffer - buffer);
for (i = 0; i < len / 2; i++) {
char j = buffer[i];
buffer[i] = buffer[len-i-1];
buffer[len-i-1] = j;
}
return len;
}
int
mini_vsnprintf(char *buffer, unsigned int buffer_len, const char *fmt, va_list va)
{
char *pbuffer = buffer;
char bf[24];
char ch;
int _putc(char ch)
{
if ((unsigned int)((pbuffer - buffer) + 1) >= buffer_len)
return 0;
*(pbuffer++) = ch;
*(pbuffer) = '\0';
return 1;
}
int _puts(char *s, unsigned int len)
{
unsigned int i;
if (buffer_len - (pbuffer - buffer) - 1 < len)
len = buffer_len - (pbuffer - buffer) - 1;
/* Copy to buffer */
for (i = 0; i < len; i++)
*(pbuffer++) = s[i];
*(pbuffer) = '\0';
return len;
}
while ((ch=*(fmt++))) {
if ((unsigned int)((pbuffer - buffer) + 1) >= buffer_len)
break;
if (ch!='%')
_putc(ch);
else {
char zero_pad = 0;
char *ptr;
unsigned int len;
ch=*(fmt++);
/* Zero padding requested */
if (ch=='0') {
ch=*(fmt++);
if (ch == '\0')
goto end;
if (ch >= '0' && ch <= '9')
zero_pad = ch - '0';
ch=*(fmt++);
}
switch (ch) {
case 0:
goto end;
case 'u':
case 'd':
len = mini_itoa(va_arg(va, unsigned int), 10, 0, (ch=='u'), bf, zero_pad);
_puts(bf, len);
break;
case 'x':
case 'X':
len = mini_itoa(va_arg(va, unsigned int), 16, (ch=='X'), 1, bf, zero_pad);
_puts(bf, len);
break;
case 'c' :
_putc((char)(va_arg(va, int)));
break;
case 's' :
ptr = va_arg(va, char*);
_puts(ptr, mini_strlen(ptr));
break;
default:
_putc(ch);
break;
}
}
}
end:
return pbuffer - buffer;
}
int
mini_snprintf(char* buffer, unsigned int buffer_len, const char *fmt, ...)
{
int ret;
va_list va;
va_start(va, fmt);
ret = mini_vsnprintf(buffer, buffer_len, fmt, va);
va_end(va);
return ret;
}

47
micropython/trezorhal/mini_printf.h Normal file
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@ -0,0 +1,47 @@
/*
* The Minimal snprintf() implementation
*
* Copyright (c) 2013 Michal Ludvig <michal@logix.cz>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the auhor nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __MINI_PRINTF__
#define __MINI_PRINTF__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdarg.h>
int mini_vsnprintf(char* buffer, unsigned int buffer_len, const char *fmt, va_list va);
int mini_snprintf(char* buffer, unsigned int buffer_len, const char *fmt, ...);
#ifdef __cplusplus
}
#endif
#endif