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TF-Lite Micro: Fix C linkage for stm32f4HAL target #40467

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merged 1 commit into from
Jun 23, 2020
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TF-Lite Micro: Fix C linkage for stm32f4HAL target #40467

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10 changes: 9 additions & 1 deletion tensorflow/lite/micro/stm32f4HAL/debug_log.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,10 @@ limitations under the License.

extern UART_HandleTypeDef DEBUG_UART_HANDLE;

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __GNUC__
int __io_putchar(int ch) {
HAL_UART_Transmit(&DEBUG_UART_HANDLE, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
Expand All @@ -36,4 +40,8 @@ int fputc(int ch, FILE *f) {
}
#endif /* __GNUC__ */

extern "C" void DebugLog(const char *s) { fprintf(stderr, "%s", s); }
void DebugLog(const char *s) { fprintf(stderr, "%s", s); }

#ifdef __cplusplus
}
#endif