Merge pull request #430 from tropicsquare/ETR01SDK-529-Fix-buffering-of-examples

ETR01SDK-529: Fix buffering of examples

Author: andreondra

examples/linux/spi_devkit/fw_update/main.c

@@ -45,6 +45,11 @@ lt_ret_t get_fw_versions(lt_handle_t *lt_handle)
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==========================================\n");
     printf("==== TROPIC01 Firmware Update Example ====\n");
     printf("==========================================\n");

examples/linux/spi_devkit/hello_world/main.c

@@ -32,6 +32,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("======================================\n");
     printf("==== TROPIC01 Hello World Example ====\n");
     printf("======================================\n");

examples/linux/spi_devkit/identify_chip/main.c

@@ -18,6 +18,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==============================================\n");
     printf("==== TROPIC01 Chip Identification Example ====\n");
     printf("==============================================\n");

examples/linux/usb_devkit/fw_update/main.c

@@ -45,6 +45,11 @@ lt_ret_t get_fw_versions(lt_handle_t *lt_handle)
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==========================================\n");
     printf("==== TROPIC01 Firmware Update Example ====\n");
     printf("==========================================\n");

examples/linux/usb_devkit/hello_world/main.c

@@ -32,6 +32,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("======================================\n");
     printf("==== TROPIC01 Hello World Example ====\n");
     printf("======================================\n");

examples/linux/usb_devkit/identify_chip/main.c

@@ -18,6 +18,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==============================================\n");
     printf("==== TROPIC01 Chip Identification Example ====\n");
     printf("==============================================\n");

examples/model/hello_world/main.c

@@ -31,6 +31,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("======================================\n");
     printf("==== TROPIC01 Hello World Example ====\n");
     printf("======================================\n");

examples/model/hw_wallet/main.c

@@ -793,6 +793,11 @@ static int session3(lt_handle_t *h)
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==========================================\n");
     printf("==== TROPIC01 Hardware Wallet Example ====\n");
     printf("==========================================\n");

examples/model/mac_and_destroy/main.c

@@ -523,6 +523,11 @@ static lt_ret_t PIN_entry_check(lt_handle_t *h, const uint8_t *PIN, const uint8_
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("==========================================\n");
     printf("==== TROPIC01 Mac and Destroy Example ====\n");
     printf("==========================================\n");

examples/model/separate_api/main.c

@@ -33,6 +33,11 @@
 
 int main(void)
 {
+    // Cosmetics: Disable buffering to keep output in order. You do not need to do this in your app if you don't care
+    // about stdout/stderr output being shuffled or you use stdout only (or different output mechanism altogether).
+    setvbuf(stdout, NULL, _IONBF, 0);
+    setvbuf(stderr, NULL, _IONBF, 0);
+
     printf("========================================\n");
     printf("====  TROPIC01 Separate API Example ====\n");
     printf("========================================\n");