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raspberrypi
cyw43_arch_init() gets stuck
I am trying to make an lcd display show the current time
Since the pico has its own rtc and time.h does not return the actual time, i want to set up Wifi so i get the epoch time from a website, i create a C/C++ project from the raspberry pi pico extention with the option of onboard LED, my code gets stuck on cyw43_arch_init() (infinite loop?)
my code is:
#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include <string.h>
#include <stdlib.h>
#include "hardware/rtc.h"
#define data_out_port_0 6
#define data_out_port_1 7
#define data_out_port_2 8
#define data_out_port_3 9
#define data_out_port_4 10
#define data_out_port_5 11
#define data_out_port_6 12
#define data_out_port_7 13
#define rw_port 16
#define e_port 18
#define rs_port 17
typedef struct{
int DATA0, DATA1, DATA2, DATA3,
DATA4, DATA5, DATA6, DATA7,
RW, RS, E,character_count;
}LCD;
void write_data(){
gpio_put(rs_port, 1);
gpio_put(rw_port, 0);
gpio_put(e_port, 1);
sleep_ms(15);
gpio_put(e_port, 0);
}
void setup(LCD *lcd){
lcd->character_count = 0;
lcd->DATA0 = data_out_port_0;
lcd->DATA1 = data_out_port_1;
lcd->DATA2 = data_out_port_2;
lcd->DATA3 = data_out_port_3;
lcd->DATA4 = data_out_port_4;
lcd->DATA5 = data_out_port_5;
lcd->DATA6 = data_out_port_6;
lcd->DATA7 = data_out_port_7;
lcd->RW = rw_port;
lcd->RS = rs_port;
lcd->E = e_port;
//init output ports
for (int i = data_out_port_0; i <= data_out_port_7; i++) {
gpio_init(i);
gpio_set_dir(i, GPIO_OUT);
}
gpio_init(rw_port);
gpio_set_dir(rw_port, GPIO_OUT);
gpio_init(e_port);
gpio_set_dir(e_port, GPIO_OUT);
gpio_init(rs_port);
gpio_set_dir(rs_port, GPIO_OUT);
}
void print_to_lcd(char* str,LCD *lcd){
uint len = strlen(str);
// sending data to lcd
uint32_t mask = 1<<data_out_port_0 | 1<<data_out_port_1 | 1<<data_out_port_2 | 1<<data_out_port_3 |
1<<data_out_port_4 | 1<<data_out_port_5 | 1<<data_out_port_6 | 1<<data_out_port_7;
for (uint i = 0; i < len; i++) {
uint32_t data = str[i]<<6;
gpio_put_masked(mask,data);
write_data();
}
lcd->character_count += len;
}
void turn_on_display(LCD lcd){
// appears to make lcd dimmer and 2 line display doesnt work with this
// put 2 line mode first
gpio_put(e_port, 1);
gpio_put(data_out_port_0, 0);
gpio_put(data_out_port_1, 0);
gpio_put(data_out_port_2, 0);
gpio_put(data_out_port_3, 1); // this sets 2 line mode
gpio_put(data_out_port_4, 1);
gpio_put(data_out_port_5, 1);
gpio_put(data_out_port_6, 0);
gpio_put(data_out_port_7, 0);
gpio_put(rw_port, 0);
gpio_put(rs_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
for (int i = data_out_port_0; i <= data_out_port_7; i++) {
gpio_put(i, 0);
}
// display on, cursor on, blink off
gpio_put(e_port, 1);
gpio_put(data_out_port_0, 0);
gpio_put(data_out_port_1, 1);
gpio_put(data_out_port_2, 1);
gpio_put(data_out_port_3, 1);
for (int i = data_out_port_4; i<=data_out_port_7; i++) {
gpio_put(i, 0);
}
gpio_put(rs_port, 0);
gpio_put(rw_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
for (int i = data_out_port_0; i<=data_out_port_3; i++) {
gpio_put(i, 0);
}
}
void change_line(LCD *lcd){
gpio_put(e_port, 1);
gpio_put(data_out_port_0, 0);
gpio_put(data_out_port_1, 0);
gpio_put(data_out_port_2, 0);
gpio_put(data_out_port_3, 1);
gpio_put(data_out_port_4, 0);
gpio_put(data_out_port_5, 1);
gpio_put(data_out_port_6, 0);
gpio_put(data_out_port_7, 1);
gpio_put(rs_port, 0);
gpio_put(rw_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
}
void clear(LCD lcd){
gpio_put(e_port, 1);
gpio_put(data_out_port_0, 1);
for(int i = data_out_port_1 ; i <= data_out_port_7; i++){
gpio_put(i, 0);
}
gpio_put(rs_port, 0);
gpio_put(rw_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
}
void shift(LCD lcd){
gpio_put(e_port, 1);
gpio_put(data_out_port_2, 1);
gpio_put(data_out_port_3, 1);
gpio_put(data_out_port_4, 1);
for(int i = data_out_port_5 ; i <= data_out_port_7; i++){
gpio_put(i, 0);
}
gpio_put(rs_port, 0);
gpio_put(rw_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
}
void cycle(LCD lcd,char *firstmessage,char *secondmessage){
print_to_lcd(firstmessage, &lcd);
change_line(&lcd);
print_to_lcd(secondmessage, &lcd);
sleep_ms(2000);
for(int i = 0; i < 16; i++){
shift(lcd);
sleep_ms(800);
}
clear(lcd);
}
void shift_left(LCD lcd){
gpio_put(e_port, 1);
gpio_put(data_out_port_0, 0);
gpio_put(data_out_port_1, 0);
gpio_put(data_out_port_2, 0);
gpio_put(data_out_port_3, 1);
gpio_put(data_out_port_4, 1);
for(int i = data_out_port_5 ; i <= data_out_port_7; i++){
gpio_put(i, 0);
}
gpio_put(rs_port, 0);
gpio_put(rw_port, 0);
sleep_ms(15);
gpio_put(e_port, 0);
}
void reverse_cycle(LCD lcd,char *firstmessage,char *secondmessage){
print_to_lcd(firstmessage, &lcd);
change_line(&lcd);
print_to_lcd(secondmessage, &lcd);
sleep_ms(1000);
int scroll = strlen(firstmessage);
for(int i = 0; i < 15; i++){
shift_left(lcd);
sleep_ms(750);
}
sleep_ms(1000);
clear(lcd);
}
void check_for_special_date(datetime_t *t,char *special_message){
if( t->day == 25 && t->month ==12 ){
strcpy(special_message," Merry Xmas!");
}
else if( t->day == 1 && t->month ==1 ){
strcpy(special_message," Happy New Year!");
}
else {
strcpy(special_message," welcome! ");
}
}
void format(datetime_t *t, char* min, char* hour){
char *mintemp = malloc(4*sizeof(char));
char *hourtemp = malloc(4*sizeof(char));
if (t->hour == 0){
strcpy(hour,"0");
strcat(hour,utoa(t->hour,hourtemp,10));
}else {
strcpy(hour,utoa(t->hour,hour,10));
}
if (t->min < 10){
strcpy(min,"0");
strcat(min,utoa(t->min,mintemp,10));
}else strcpy(min,utoa(t->min,mintemp,10));
}
int main()
{
LCD lcd;
rtc_init();
datetime_t t={
.year = 2025,
.month = 12,
.day = 24,
.dotw = 5,
.hour = 23,
.min = 59,
.sec = 57
};
setup(&lcd);
turn_on_display(lcd);
if (!rtc_set_datetime(&t)) return -1;
sleep_ms(30);
if (!rtc_get_datetime(&t)) return -1;
// Initialise the Wi-Fi chip
stdio_init_all();
print_to_lcd("hello! ",&lcd);
if (cyw43_arch_init()) {
print_to_lcd("Wi-Fi init failed",&lcd);
while(1){sleep_ms(1000);}
}
print_to_lcd("before connecting",&lcd);
cyw43_arch_enable_sta_mode();
char ssid[]="ssid";
char pass[]="pass";
if (cyw43_arch_wifi_connect_timeout_ms(ssid, pass, CYW43_AUTH_WPA2_AES_PSK, 1000)){
print_to_lcd("connected!\n",&lcd);
}
print_to_lcd("error connecting",&lcd);
while (true) {
print_to_lcd("test",&lcd);
sleep_ms(1000);
}
}
cmake:
# Generated Cmake Pico project file
cmake_minimum_required(VERSION 3.13)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# Initialise pico_sdk from installed location
# (note this can come from environment, CMake cache etc)
# == DO NOT EDIT THE FOLLOWING LINES for the Raspberry Pi Pico VS Code Extension to work ==
if(WIN32)
set(USERHOME $ENV{USERPROFILE})
else()
set(USERHOME $ENV{HOME})
endif()
set(sdkVersion 2.2.0)
set(toolchainVersion 14_2_Rel1)
set(picotoolVersion 2.2.0-a4)
set(picoVscode ${USERHOME}/.pico-sdk/cmake/pico-vscode.cmake)
if (EXISTS ${picoVscode})
include(${picoVscode})
endif()
# ====================================================================================
set(PICO_BOARD pico_w CACHE STRING "Board type")
# Pull in Raspberry Pi Pico SDK (must be before project)
include(pico_sdk_import.cmake)
project(onboard_led C CXX ASM)
# Initialise the Raspberry Pi Pico SDK
pico_sdk_init()
# Add executable. Default name is the project name, version 0.1
add_executable(onboard_led onboard_led.c )
pico_set_program_name(onboard_led "onboard_led")
pico_set_program_version(onboard_led "0.1")
# Modify the below lines to enable/disable output over UART/USB
pico_enable_stdio_uart(onboard_led 0)
pico_enable_stdio_usb(onboard_led 0)
# Add the standard library to the build
target_link_libraries(onboard_led
pico_stdlib)
# Add the standard include files to the build
target_include_directories(onboard_led PRIVATE
${CMAKE_CURRENT_LIST_DIR}
)
# Add any user requested libraries
target_link_libraries(onboard_led
pico_cyw43_arch_lwip_threadsafe_background
hardware_rtc
)
pico_add_extra_outputs(onboard_led)
thanks if someone knows how to fix this! this is my first project im pretty much new to everything
Does a pico W examples work ok? Does the uart print any errors in debug? I can't spot the reason why it would not return. Are you sure it's not returning an error?
Does a pico W examples work ok? Does the uart print any errors in debug? I can't spot the reason why it would not return. Are you sure it's not returning an error?
hey sorry for the late reply
i boiled down the issue in the function lwip_init() in the 3rd party libraries under the lwip folder
lwip_init(void)
{
#ifndef LWIP_SKIP_CONST_CHECK
int a = 0;
LWIP_UNUSED_ARG(a);
LWIP_ASSERT("LWIP_CONST_CAST not implemented correctly. Check your lwIP port.", LWIP_CONST_CAST(void *, &a) == &a);
#endif
#ifndef LWIP_SKIP_PACKING_CHECK
LWIP_ASSERT("Struct packing not implemented correctly. Check your lwIP port.", sizeof(struct packed_struct_test) == PACKED_STRUCT_TEST_EXPECTED_SIZE);
#endif
/* Modules initialization */
stats_init();
#if !NO_SYS
sys_init();
#endif /* !NO_SYS */
mem_init();
memp_init();
pbuf_init();
netif_init();
#if LWIP_IPV4
ip_init();
#if LWIP_ARP
etharp_init();
#endif /* LWIP_ARP */
#endif /* LWIP_IPV4 */
#if LWIP_RAW
raw_init();
#endif /* LWIP_RAW */
#if LWIP_UDP
udp_init();
#endif /* LWIP_UDP */
#if LWIP_TCP
tcp_init();
#endif /* LWIP_TCP */
#if LWIP_IGMP
igmp_init();
#endif /* LWIP_IGMP */
#if LWIP_DNS
dns_init();
#endif /* LWIP_DNS */
#if PPP_SUPPORT
ppp_init();
#endif
#if LWIP_TIMERS
sys_timeouts_init();
#endif /* LWIP_TIMERS */
}
this function in specifically gets stuck
I'm not going to comment on why your code may not be working, but...
Since the pico has its own rtc and time.h does not return the actual time, i want to set up Wifi so i get the epoch time from a website
You might find https://github.com/raspberrypi/pico-examples/pull/716 to be very useful 🙂
