diff --git a/examples/experiments/unaligned_load/unaligned_load.c b/examples/experiments/unaligned_load/unaligned_load.c
index 9f02162..aa26a81 100644
--- a/examples/experiments/unaligned_load/unaligned_load.c
+++ b/examples/experiments/unaligned_load/unaligned_load.c
@@ -184,7 +184,7 @@ uint32_t IRAM run_test(const char *string, test_with_fn_t testfn, const char *te
return instructions;
}
-void test_string(const char *string, char *label, bool evict_cache)
+void test_string(const char *string, const char *label, bool evict_cache)
{
printf("Testing %s (%p) '%s'\r\n", label, string, string);
printf("Formats as: '");
diff --git a/examples/http_server/http_server.c b/examples/http_server/http_server.c
index 985732e..cbe9a58 100644
--- a/examples/http_server/http_server.c
+++ b/examples/http_server/http_server.c
@@ -43,7 +43,7 @@ int32_t ssi_handler(int32_t iIndex, char *pcInsert, int32_t iInsertLen)
return (strlen(pcInsert));
}
-char *gpio_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
+const char *gpio_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
{
for (int i = 0; i < iNumParams; i++) {
if (strcmp(pcParam[i], "on") == 0) {
@@ -63,12 +63,12 @@ char *gpio_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValu
return "/index.ssi";
}
-char *about_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
+const char *about_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
{
return "/about.html";
}
-char *websocket_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
+const char *websocket_cgi_handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
{
return "/websockets.html";
}
diff --git a/examples/sntp/sntp_example.c b/examples/sntp/sntp_example.c
index 0a933a2..fd16766 100644
--- a/examples/sntp/sntp_example.c
+++ b/examples/sntp/sntp_example.c
@@ -32,7 +32,7 @@
void sntp_tsk(void *pvParameters)
{
- char *servers[] = {SNTP_SERVERS};
+ const char *servers[] = {SNTP_SERVERS};
UNUSED_ARG(pvParameters);
/* Wait until we have joined AP and are assigned an IP */
diff --git a/examples/upnp/httpd.c b/examples/upnp/httpd.c
index 9db2465..ea543d4 100644
--- a/examples/upnp/httpd.c
+++ b/examples/upnp/httpd.c
@@ -19,7 +19,7 @@ void httpd_task(void *pvParameters)
if ((err = netconn_recv(client, &nb)) == ERR_OK) {
struct sdk_station_config config;
sdk_wifi_station_get_config(&config);
- char * buf =
+ const char * buf =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\
<root>\
<device>\
@@ -50,4 +50,4 @@ void httpd_task(void *pvParameters)
netconn_close(client);
netconn_delete(client);
}
-}
\ No newline at end of file
+}
diff --git a/examples/upnp/upnp.c b/examples/upnp/upnp.c
index bb34cae..0b85855 100644
--- a/examples/upnp/upnp.c
+++ b/examples/upnp/upnp.c
@@ -25,7 +25,7 @@ static const char* get_my_ip(void)
* @param recv the lwip UDP callback
* @retval udp_pcb* or NULL if joining failed
*/
-static struct udp_pcb* mcast_join_group(char *group_ip, uint16_t group_port, void (* recv)(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16_t port))
+static struct udp_pcb* mcast_join_group(const char *group_ip, uint16_t group_port, void (* recv)(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16_t port))
{
bool status = false;
struct udp_pcb *upcb;
diff --git a/extras/http_client_ota/http_buffered_client.c b/extras/http_client_ota/http_buffered_client.c
index a0d79bf..ef792a6 100644
--- a/extras/http_client_ota/http_buffered_client.c
+++ b/extras/http_client_ota/http_buffered_client.c
@@ -19,7 +19,7 @@
typedef void (*handle_http_token)(char *);
struct http_token_table {
- char * token;
+ const char * token;
handle_http_token http_tock_cb;
};
diff --git a/extras/http_client_ota/http_buffered_client.h b/extras/http_client_ota/http_buffered_client.h
index cfeb8da..aa30da3 100644
--- a/extras/http_client_ota/http_buffered_client.h
+++ b/extras/http_client_ota/http_buffered_client.h
@@ -15,9 +15,9 @@ typedef enum {
} HTTP_Client_State;
typedef struct {
- char * server;
- char * port;
- char * path;
+ const char * server;
+ const char * port;
+ const char * path;
char * buffer;
uint16_t buffer_size;
http_final_cb buffer_full_cb;
diff --git a/extras/http_client_ota/http_client_ota.h b/extras/http_client_ota/http_client_ota.h
index 56c7ea0..f6841e6 100644
--- a/extras/http_client_ota/http_client_ota.h
+++ b/extras/http_client_ota/http_client_ota.h
@@ -38,10 +38,10 @@ typedef enum {
* Struct that contains all info for start ota.
*/
typedef struct {
- char *server; /**< Server domain */
- char *port; /**< Server port */
- char *binary_path; /**< Server Path dowload new update binary */
- char *sha256_path; /**< Server Path of SHA256 sum for check binary, could be NULL, check will be skipped */
+ const char *server; /**< Server domain */
+ const char *port; /**< Server port */
+ const char *binary_path; /**< Server Path dowload new update binary */
+ const char *sha256_path; /**< Server Path of SHA256 sum for check binary, could be NULL, check will be skipped */
} ota_info;
/**
diff --git a/extras/rboot-ota/rboot-api.c b/extras/rboot-ota/rboot-api.c
index 85b459d..755e397 100644
--- a/extras/rboot-ota/rboot-api.c
+++ b/extras/rboot-ota/rboot-api.c
@@ -239,7 +239,7 @@ typedef struct __attribute__((packed)) {
bool rboot_verify_image(uint32_t initial_offset, uint32_t *image_length, const char **error_message)
{
uint32_t offset = initial_offset;
- char *error = NULL;
+ const char *error = NULL;
RBOOT_DEBUG("rboot_verify_image: verifying image at 0x%08x\n", initial_offset);
if(offset % 4) {
error = "Unaligned flash offset";
diff --git a/extras/sntp/sntp.c b/extras/sntp/sntp.c
index 274c7cd..26ac110 100644
--- a/extras/sntp/sntp.c
+++ b/extras/sntp/sntp.c
@@ -690,7 +690,7 @@ sntp_request(void *arg)
void
sntp_init(void)
{
- char *def_addr[] = {SNTP_SERVER_ADDRESS};
+ const char *def_addr[] = {SNTP_SERVER_ADDRESS};
sntp_num_servers = 0;
sntp_set_servers(def_addr, sizeof(def_addr) / sizeof(char*));
@@ -715,7 +715,7 @@ sntp_init(void)
/**
* Set the NTP servers
*/
-int sntp_set_servers(char *server_url[], int num_servers)
+int sntp_set_servers(const char *server_url[], int num_servers)
{
int i;
diff --git a/extras/sntp/sntp.h b/extras/sntp/sntp.h
index dd25cf0..4fde486 100644
--- a/extras/sntp/sntp.h
+++ b/extras/sntp/sntp.h
@@ -52,7 +52,7 @@ void sntp_set_timezone(const struct timezone *tz);
* Returns 0 if OK, less than 0 if error.
* NOTE: This function must NOT be called before sntp_initialize().
*/
-int sntp_set_servers(char *server_url[], int num_servers);
+int sntp_set_servers(const char *server_url[], int num_servers);
/*
* Sets the update delay in ms. If requested value is less than 15s,
diff --git a/extras/ssd1306/ssd1306.c b/extras/ssd1306/ssd1306.c
index df188c5..4c1fc28 100644
--- a/extras/ssd1306/ssd1306.c
+++ b/extras/ssd1306/ssd1306.c
@@ -1007,7 +1007,7 @@ int ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font
return d->width;
}
-int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char *str,
+int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, const char *str,
ssd1306_color_t foreground, ssd1306_color_t background)
{
uint8_t t = x;
diff --git a/extras/ssd1306/ssd1306.h b/extras/ssd1306/ssd1306.h
index 86abaab..045d86f 100644
--- a/extras/ssd1306/ssd1306.h
+++ b/extras/ssd1306/ssd1306.h
@@ -493,7 +493,7 @@ int ssd1306_draw_char(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font
* @param background Background color
* @return Width of the string or negative value if error occured
*/
-int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, char *str, ssd1306_color_t foreground, ssd1306_color_t background);
+int ssd1306_draw_string(const ssd1306_t *dev, uint8_t *fb, const font_info_t *font, uint8_t x, uint8_t y, const char *str, ssd1306_color_t foreground, ssd1306_color_t background);
/**
* Stop scrolling (the ram data needs to be rewritten)