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6
99-serprog.rules
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@ -1,6 +0,0 @@
# udev rule that creates symlinks like /dev/serprog0
#
# only matches standard usb cdc-acm devices (/dev/ttyACM*) since non-standard
# (ftdi etc) uart converters will probably have a generic descriptor anyway
DRIVERS=="cdc_acm", ATTRS{interface}=="serprog", SYMLINK+="serprog%n"

2
CMakeLists.txt
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@ -7,5 +7,5 @@ pico_sdk_init()
add_executable(pico_serprog) add_executable(pico_serprog)
target_sources(pico_serprog PRIVATE main.c usb_descriptors.c) target_sources(pico_serprog PRIVATE main.c usb_descriptors.c)
target_link_libraries(pico_serprog PRIVATE pico_stdlib pico_unique_id hardware_spi tinyusb_device) target_link_libraries(pico_serprog PRIVATE pico_stdlib hardware_spi tinyusb_device)
pico_add_extra_outputs(pico_serprog) pico_add_extra_outputs(pico_serprog)

428
COPYING.CC-BY-SA
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@ -1,428 +0,0 @@
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395
main.c
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@ -1,40 +1,138 @@
/** /**
* Copyright (C) 2021, Mate Kukri <km@mkukri.xyz> * Copyright (C) 2021, Mate Kukri <km@mkukri.xyz>
* Copyright (C) 2023, 2024, Riku Viitanen <riku.viitanen@protonmail.com>
* Based on "pico-serprog" by Thomas Roth <code@stacksmashing.net> * Based on "pico-serprog" by Thomas Roth <code@stacksmashing.net>
* *
* Licensed under GPLv3 * Licensed under GPLv3
* *
* Also based on stm32-vserprog: * Also based on stm32-vserprog:
* https://github.com/dword1511/stm32-vserprog * https://github.com/dword1511/stm32-vserprog
*
*/ */
#define DESCRIPTION "SPI flash chip programmer using Flashprog's serprog protocol"
#define WEBSITE "https://codeberg.org/Riku_V/pico-serprog/"
#include "pico/stdlib.h" #include "pico/stdlib.h"
#include "pico/binary_info.h"
#include "hardware/spi.h" #include "hardware/spi.h"
#include "tusb.h" #include "tusb.h"
#include "serprog.h" #include "serprog.h"
#define CDC_ITF 0 /* USB CDC interface no */ #define CDC_ITF 0 // USB CDC interface no
#define SPI_IF spi0 /* Which PL022 to use */ #define SPI_IF spi0 // Which PL022 to use
#define SPI_CS_0 5 /* The default CS pin */ #define SPI_BAUD 12000000 // Default baudrate (12 MHz)
#define SPI_CS 5
#define SPI_MISO 4 #define SPI_MISO 4
#define SPI_MOSI 3 #define SPI_MOSI 3
#define SPI_SCK 2 #define SPI_SCK 2
uint8_t spi_enabled = 0; static void enable_spi(uint baud)
uint cs_pin = SPI_CS_0; {
#define NUM_CS_AVAILABLE 4 /* Number of usable chip selects */ // Setup chip select GPIO
gpio_init(SPI_CS);
gpio_put(SPI_CS, 1);
gpio_set_dir(SPI_CS, GPIO_OUT);
uint baud = 12000000; /* Default to 12MHz */ // Setup PL022
spi_init(SPI_IF, baud);
gpio_set_function(SPI_MISO, GPIO_FUNC_SPI);
gpio_set_function(SPI_MOSI, GPIO_FUNC_SPI);
gpio_set_function(SPI_SCK, GPIO_FUNC_SPI);
}
static const char progname[16] = "pico-serprog"; static void disable_spi()
{
// Set all pins to SIO inputs
gpio_init(SPI_CS);
gpio_init(SPI_MISO);
gpio_init(SPI_MOSI);
gpio_init(SPI_SCK);
/* Map of supported serprog commands */ // Disable all pulls
gpio_set_pulls(SPI_CS, 0, 0);
gpio_set_pulls(SPI_MISO, 0, 0);
gpio_set_pulls(SPI_MOSI, 0, 0);
gpio_set_pulls(SPI_SCK, 0, 0);
// Disable SPI peripheral
spi_deinit(SPI_IF);
}
static inline void cs_select(uint cs_pin)
{
asm volatile("nop \n nop \n nop"); // FIXME
gpio_put(cs_pin, 0);
asm volatile("nop \n nop \n nop"); // FIXME
}
static inline void cs_deselect(uint cs_pin)
{
asm volatile("nop \n nop \n nop"); // FIXME
gpio_put(cs_pin, 1);
asm volatile("nop \n nop \n nop"); // FIXME
}
static void wait_for_read(void)
{
do
tud_task();
while (!tud_cdc_n_available(CDC_ITF));
}
static inline void readbytes_blocking(void *b, uint32_t len)
{
while (len) {
wait_for_read();
uint32_t r = tud_cdc_n_read(CDC_ITF, b, len);
b += r;
len -= r;
}
}
static inline uint8_t readbyte_blocking(void)
{
wait_for_read();
uint8_t b;
tud_cdc_n_read(CDC_ITF, &b, 1);
return b;
}
static void wait_for_write(void)
{
do {
tud_task();
} while (!tud_cdc_n_write_available(CDC_ITF));
}
static inline void sendbytes_blocking(const void *b, uint32_t len)
{
while (len) {
wait_for_write();
uint32_t w = tud_cdc_n_write(CDC_ITF, b, len);
b += w;
len -= w;
}
}
static inline void sendbyte_blocking(uint8_t b)
{
wait_for_write();
tud_cdc_n_write(CDC_ITF, &b, 1);
}
static void command_loop(void)
{
uint baud = spi_get_baudrate(SPI_IF);
for (;;) {
switch (readbyte_blocking()) {
case S_CMD_NOP:
sendbyte_blocking(S_ACK);
break;
case S_CMD_Q_IFACE:
sendbyte_blocking(S_ACK);
sendbyte_blocking(0x01);
sendbyte_blocking(0x00);
break;
case S_CMD_Q_CMDMAP:
{
static const uint32_t cmdmap[8] = { static const uint32_t cmdmap[8] = {
(1 << S_CMD_NOP) | (1 << S_CMD_NOP) |
(1 << S_CMD_Q_IFACE) | (1 << S_CMD_Q_IFACE) |
@ -46,140 +144,51 @@ static const uint32_t cmdmap[8] = {
(1 << S_CMD_O_SPIOP) | (1 << S_CMD_O_SPIOP) |
(1 << S_CMD_S_BUSTYPE) | (1 << S_CMD_S_BUSTYPE) |
(1 << S_CMD_S_SPI_FREQ)| (1 << S_CMD_S_SPI_FREQ)|
(1 << S_CMD_S_PIN_STATE) | (1 << S_CMD_S_PIN_STATE)
(1 << S_CMD_S_SPI_CS)
}; };
sendbyte_blocking(S_ACK);
static void use_cs(uint pin) { sendbytes_blocking((uint8_t *) cmdmap, sizeof cmdmap);
gpio_put(pin, 1); break;
gpio_set_dir(pin, GPIO_OUT);
gpio_set_drive_strength(pin, GPIO_DRIVE_STRENGTH_12MA);
} }
case S_CMD_Q_PGMNAME:
{
static const char progname[16] = "pico-serprog";
static void pullup_cs(uint pin) { sendbyte_blocking(S_ACK);
gpio_set_dir(pin, GPIO_IN); sendbytes_blocking(progname, sizeof progname);
gpio_pull_up(pin); break;
} }
case S_CMD_Q_SERBUF:
static void enable_spi() { sendbyte_blocking(S_ACK);
#ifdef PICO_DEFAULT_LED_PIN sendbyte_blocking(0xFF);
/* Setup status LED */ sendbyte_blocking(0xFF);
gpio_init(PICO_DEFAULT_LED_PIN); break;
gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT); case S_CMD_Q_BUSTYPE:
#endif sendbyte_blocking(S_ACK);
sendbyte_blocking((1 << 3)); // BUS_SPI
/* Setup default CS as output, others as inputs with pull-ups */ break;
for (uint8_t i = SPI_CS_0+1; i<SPI_CS_0+NUM_CS_AVAILABLE; i++) { case S_CMD_SYNCNOP:
gpio_init(i); sendbyte_blocking(S_NAK);
pullup_cs(i); sendbyte_blocking(S_ACK);
} break;
gpio_init(cs_pin); case S_CMD_S_BUSTYPE:
use_cs(cs_pin); // If SPI is among the requsted bus types we succeed, fail otherwise
/* Setup PL022 */
spi_init(SPI_IF, baud);
gpio_set_function(SPI_MISO, GPIO_FUNC_SPI);
gpio_set_function(SPI_MOSI, GPIO_FUNC_SPI);
gpio_set_function(SPI_SCK, GPIO_FUNC_SPI);
gpio_set_drive_strength(SPI_MISO, GPIO_DRIVE_STRENGTH_12MA);
gpio_set_drive_strength(SPI_MOSI, GPIO_DRIVE_STRENGTH_12MA);
gpio_set_drive_strength(SPI_SCK, GPIO_DRIVE_STRENGTH_12MA);
spi_enabled = 1;
}
static void disable_pin(uint pin) {
gpio_init(pin); /* Set pin to SIO input */
gpio_set_pulls(pin, 0, 0); /* Disable all pulls */
}
static void disable_spi() {
for (uint8_t i=0; i<NUM_CS_AVAILABLE; i++)
disable_pin(SPI_CS_0 + i);
disable_pin(SPI_MISO);
disable_pin(SPI_MOSI);
disable_pin(SPI_SCK);
/* Disable SPI peripheral */
spi_deinit(SPI_IF);
spi_enabled = 0;
}
static inline void cs_select(uint cs_pin) {
asm volatile("nop \n nop \n nop"); /* FIXME */
gpio_put(cs_pin, 0);
asm volatile("nop \n nop \n nop"); /* FIXME */
}
static inline void cs_deselect(uint cs_pin) {
asm volatile("nop \n nop \n nop"); /* FIXME */
gpio_put(cs_pin, 1);
asm volatile("nop \n nop \n nop"); /* FIXME */
}
static void wait_for_read(void) {
do
tud_task();
while (!tud_cdc_n_available(CDC_ITF));
}
static inline void readbytes_blocking(void *b, uint32_t len) {
while (len) {
wait_for_read();
uint32_t r = tud_cdc_n_read(CDC_ITF, b, len);
b += r;
len -= r;
}
}
static inline uint8_t readbyte_blocking(void) {
wait_for_read();
uint8_t b;
tud_cdc_n_read(CDC_ITF, &b, 1);
return b;
}
static void wait_for_write(void) {
do {
tud_task();
} while (!tud_cdc_n_write_available(CDC_ITF));
}
static inline void sendbytes_blocking(const void *b, uint32_t len) {
while (len) {
wait_for_write();
uint32_t w = tud_cdc_n_write(CDC_ITF, b, len);
b += w;
len -= w;
}
}
static inline void sendbyte_blocking(uint8_t b) {
wait_for_write();
tud_cdc_n_write(CDC_ITF, &b, 1);
}
void s_cmd_s_bustype() {
/* If SPI is among the requested bus types we succeed,
* fail otherwise */
if((uint8_t) readbyte_blocking() & (1 << 3)) if((uint8_t) readbyte_blocking() & (1 << 3))
sendbyte_blocking(S_ACK); sendbyte_blocking(S_ACK);
else else
sendbyte_blocking(S_NAK); sendbyte_blocking(S_NAK);
} break;
case S_CMD_O_SPIOP:
void s_cmd_o_spiop() { {
static uint8_t buf[4096]; static uint8_t buf[4096];
uint32_t wlen = 0; uint32_t wlen = 0;
uint32_t rlen = 0;
readbytes_blocking(&wlen, 3); readbytes_blocking(&wlen, 3);
uint32_t rlen = 0;
readbytes_blocking(&rlen, 3); readbytes_blocking(&rlen, 3);
cs_select(cs_pin); cs_select(SPI_CS);
while (wlen) { while (wlen) {
uint32_t cur = MIN(wlen, sizeof buf); uint32_t cur = MIN(wlen, sizeof buf);
@ -197,133 +206,47 @@ void s_cmd_o_spiop() {
rlen -= cur; rlen -= cur;
} }
cs_deselect(cs_pin); cs_deselect(SPI_CS);
} }
break;
void s_cmd_s_spi_freq() { case S_CMD_S_SPI_FREQ:
{
uint32_t want_baud; uint32_t want_baud;
readbytes_blocking(&want_baud, 4); readbytes_blocking(&want_baud, 4);
if (want_baud) { if (want_baud) {
/* Set frequency */ // Set frequence
baud = spi_set_baudrate(SPI_IF, want_baud); baud = spi_set_baudrate(SPI_IF, want_baud);
/* Send back actual value */ // Send back actual value
sendbyte_blocking(S_ACK); sendbyte_blocking(S_ACK);
sendbytes_blocking(&baud, 4); sendbytes_blocking(&baud, 4);
} else { } else {
/* 0 Hz is reserved */ // 0 Hz is reserved
sendbyte_blocking(S_NAK); sendbyte_blocking(S_NAK);
} }
break;
} }
case S_CMD_S_PIN_STATE:
void s_cmd_s_pin_state() {
if (readbyte_blocking()) if (readbyte_blocking())
enable_spi(); enable_spi(baud);
else else
disable_spi(); disable_spi();
sendbyte_blocking(S_ACK); sendbyte_blocking(S_ACK);
}
void s_cmd_s_spi_cs() {
uint8_t cs = readbyte_blocking();
if (cs >= NUM_CS_AVAILABLE)
sendbyte_blocking(S_NAK);
return;
cs += SPI_CS_0;
if (spi_enabled) {
if (cs_pin != cs) {
pullup_cs(cs_pin);
use_cs(cs);
}
}
cs_pin = cs;
sendbyte_blocking(S_ACK);
}
static void command_loop() {
while (1) {
uint8_t cmd = readbyte_blocking();
#ifdef PICO_DEFAULT_LED_PIN
gpio_put(PICO_DEFAULT_LED_PIN, 1);
#endif
switch (cmd) {
case S_CMD_NOP:
sendbyte_blocking(S_ACK);
break;
case S_CMD_Q_IFACE:
sendbyte_blocking(S_ACK);
sendbyte_blocking(0x01);
sendbyte_blocking(0x00);
break;
case S_CMD_Q_CMDMAP:
sendbyte_blocking(S_ACK);
sendbytes_blocking((uint8_t *)cmdmap, sizeof(cmdmap));
break;
case S_CMD_Q_PGMNAME:
sendbyte_blocking(S_ACK);
sendbytes_blocking(progname, sizeof(progname));
break;
case S_CMD_Q_SERBUF:
sendbyte_blocking(S_ACK);
sendbyte_blocking(0xFF);
sendbyte_blocking(0xFF);
break;
case S_CMD_Q_BUSTYPE:
sendbyte_blocking(S_ACK);
sendbyte_blocking((1 << 3)); /* SPI */
break;
case S_CMD_SYNCNOP:
sendbyte_blocking(S_NAK);
sendbyte_blocking(S_ACK);
break;
case S_CMD_S_BUSTYPE:
s_cmd_s_bustype();
break;
case S_CMD_O_SPIOP:
s_cmd_o_spiop();
break;
case S_CMD_S_SPI_FREQ:
s_cmd_s_spi_freq();
break;
case S_CMD_S_PIN_STATE:
s_cmd_s_pin_state();
break;
case S_CMD_S_SPI_CS:
s_cmd_s_spi_cs();
break; break;
default: default:
sendbyte_blocking(S_NAK); sendbyte_blocking(S_NAK);
break;
} }
tud_cdc_n_write_flush(CDC_ITF); tud_cdc_n_write_flush(CDC_ITF);
#ifdef PICO_DEFAULT_LED_PIN
gpio_put(PICO_DEFAULT_LED_PIN, 0);
#endif
} }
} }
int main() { int main()
/* Metadata for picotool */ {
bi_decl(bi_program_description(DESCRIPTION)); // Setup USB
bi_decl(bi_program_url(WEBSITE));
#ifdef PICO_DEFAULT_LED_PIN
bi_decl(bi_1pin_with_name(PICO_DEFAULT_LED_PIN, "Activity LED"));
#endif
bi_decl(bi_1pin_with_name(SPI_MISO, "MISO"));
bi_decl(bi_1pin_with_name(SPI_MOSI, "MOSI"));
bi_decl(bi_1pin_with_name(SPI_SCK, "SCK"));
bi_decl(bi_1pin_with_name(SPI_CS_0, "CS_0 (default)"));
bi_decl(bi_1pin_with_name(SPI_CS_0+1, "CS_1"));
bi_decl(bi_1pin_with_name(SPI_CS_0+2, "CS_2"));
bi_decl(bi_1pin_with_name(SPI_CS_0+3, "CS_3"));
/* Setup USB */
tusb_init(); tusb_init();
/* Setup PL022 SPI */ // Setup PL022 SPI
enable_spi(baud); enable_spi(SPI_BAUD);
command_loop(); command_loop();
} }

24
pico_sdk_import.cmake
View file

@ -18,20 +18,9 @@ if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_P
message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')") message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
endif () endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_TAG} AND (NOT PICO_SDK_FETCH_FROM_GIT_TAG))
set(PICO_SDK_FETCH_FROM_GIT_TAG $ENV{PICO_SDK_FETCH_FROM_GIT_TAG})
message("Using PICO_SDK_FETCH_FROM_GIT_TAG from environment ('${PICO_SDK_FETCH_FROM_GIT_TAG}')")
endif ()
if (PICO_SDK_FETCH_FROM_GIT AND NOT PICO_SDK_FETCH_FROM_GIT_TAG)
set(PICO_SDK_FETCH_FROM_GIT_TAG "master")
message("Using master as default value for PICO_SDK_FETCH_FROM_GIT_TAG")
endif()
set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK") set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable") set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK") set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
set(PICO_SDK_FETCH_FROM_GIT_TAG "${PICO_SDK_FETCH_FROM_GIT_TAG}" CACHE FILEPATH "release tag for SDK")
if (NOT PICO_SDK_PATH) if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT) if (PICO_SDK_FETCH_FROM_GIT)
@ -40,22 +29,11 @@ if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT_PATH) if (PICO_SDK_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}") get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif () endif ()
# GIT_SUBMODULES_RECURSE was added in 3.17
if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
FetchContent_Declare( FetchContent_Declare(
pico_sdk pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG} GIT_TAG master
GIT_SUBMODULES_RECURSE FALSE
) )
else ()
FetchContent_Declare(
pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
)
endif ()
if (NOT pico_sdk) if (NOT pico_sdk)
message("Downloading Raspberry Pi Pico SDK") message("Downloading Raspberry Pi Pico SDK")
FetchContent_Populate(pico_sdk) FetchContent_Populate(pico_sdk)

BIN
pinout.png
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43
readme.md
View file

@ -1,28 +1,16 @@
# pico-serprog # pico-serprog
Slightly less terrible serprog implementation for the Raspberry Pi Pico and Slightly less terrible serprog implementation for the Raspberry Pi Pico and
other RP2040 based boards. Based on possibly other RP2040 based boards. Based on pico-serprog by GitHub user
![pico-serprog by stacksmashing](https://github.com/stacksmashing/pico-serprog/). "stacksmashing". Further improved by "kukrimate".
Further improved by kukrimate ![here](https://github.com/kukrimate/pico-serprog).
And me (Riku\_V) here.
Pre-compiled binaries can be downloaded from the
![Libreboot project](https://libreboot.org/download.html#https).
For a guide on how to flash a chip see
![this page](https://libreboot.org/docs/install/spi.html#raspberry-pi-pico).
This takes about 17 seconds to read the 8MiB BIOS chip of an X200.
Pinout for the SPI lines: Pinout for the SPI lines:
| Pin | Function | | Pin | Function |
|-----|----------| |-----|----------|
| 7 | CS | | GP5 | CS |
| 6 | MISO | | GP4 | MISO |
| 5 | MOSI | | GP3 | MOSI |
| 4 | SCK | | GP2 | SCK |
![Pico pinout](pinout.png)
## Compiling ## Compiling
@ -33,7 +21,7 @@ make
Plug in your Pico. Mount it as you would any other USB flash drive. Plug in your Pico. Mount it as you would any other USB flash drive.
Copy `pico_serprog.uf2` into it. Your programmer is now ready. Copy `pico_serprog.uf2` into it. Your programmer is now ready.
If you want to change the firmware, you need to press the button If you want to change the firwmare, you need to press the button
on the board while you plug it in. on the board while you plug it in.
## Usage ## Usage
@ -50,19 +38,12 @@ containing something like this will appear:
Read chip: Read chip:
``` ```
flashprog -p serprog:dev=/dev/ttyACMx,spispeed=32M -r flash.bin flashrom -p serprog:dev=/dev/ttyACMx,spispeed=32M -r flash.bin
``` ```
Write chip: Write chip:
``` ```
flashprog -p serprog:dev=/dev/ttyACMx,spispeed=32M -w flash.bin flashrom -p serprog:dev=/dev/ttyACMx,spispeed=32M -w flash.bin
```
Multiple chips can be connected at the same time. Pins GP5-GP8 are Chip
Selects 0-3, respectively. The firmware defaults to using Chip Select 0.
```
flashprog -p serprog:dev=/dev/ttyACMx,cs=0 -r chip0.bin
flashprog -p serprog:dev=/dev/ttyACMx,cs=1 -r chip1.bin
``` ```
## License ## License
@ -70,9 +51,3 @@ flashprog -p serprog:dev=/dev/ttyACMx,cs=1 -r chip1.bin
As a lot of the code itself was heavily inspired/influenced by `stm32-vserprog` As a lot of the code itself was heavily inspired/influenced by `stm32-vserprog`
this code is licensed under GPLv3. this code is licensed under GPLv3.
pinout.png is based on
[pico-pinout.svg](https://www.raspberrypi.com/documentation/microcontrollers/images/pico-pinout.svg)
by Raspberry Pi Ltd, under the
[Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/)
license.

2
serprog.h
View file

@ -28,6 +28,4 @@
#define S_CMD_S_SPI_FREQ 0x14 /* Set SPI clock frequency */ #define S_CMD_S_SPI_FREQ 0x14 /* Set SPI clock frequency */
#define S_CMD_S_PIN_STATE 0x15 /* Enable/disable output drivers */ #define S_CMD_S_PIN_STATE 0x15 /* Enable/disable output drivers */
#define S_CMD_S_SPI_CS 0x16 /* Select Chip Select to use */
#endif #endif

17
usb_descriptors.c
View file

@ -24,7 +24,6 @@
*/ */
#include "tusb.h" #include "tusb.h"
#include "pico/unique_id.h"
/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug. /* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC. * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
@ -153,16 +152,14 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
// String Descriptors // String Descriptors
//--------------------------------------------------------------------+ //--------------------------------------------------------------------+
char board_serial[2 * PICO_UNIQUE_BOARD_ID_SIZE_BYTES + 1];
// array of pointer to string descriptors // array of pointer to string descriptors
const char* const string_desc_arr [] = char const* string_desc_arr [] =
{ {
(const char[]) { 0x09, 0x04 }, // 0: is English language (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
"libreboot.org", // 1: Manufacturer "TinyUSB", // 1: Manufacturer
"pico-serprog (" PICO_BOARD ")", // 2: Product "TinyUSB Device", // 2: Product
board_serial, // 3: Serial number filled later "123456", // 3: Serials, should use chip ID
"serprog", // 4: CDC Interface "TinyUSB CDC", // 4: CDC Interface
}; };
static uint16_t _desc_str[32]; static uint16_t _desc_str[32];
@ -175,8 +172,6 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
uint8_t chr_count; uint8_t chr_count;
pico_get_unique_board_id_string(board_serial, sizeof(board_serial));
if ( index == 0) if ( index == 0)
{ {
memcpy(&_desc_str[1], string_desc_arr[0], 2); memcpy(&_desc_str[1], string_desc_arr[0], 2);