Inherit from Serial and use software buffers for TX and RX. This allows the UART peripherals to operate in a IRQ driven mode. Overrides most (but not all) stdio functions as Serial did
Dependents: buffered_serial_test BLE_Police_HRM evena_BLE_Police_HRM df-2014-workshop-rfid-case-generator-k64f ... more
Example
#include "mbed.h" #include "BufferedSerial.h" BufferedSerial pc(USBTX, USBRX); int main() { pc.baud(115200); while(1) { Timer s; s.start(); pc.printf("Hello World - buff\n"); int buffered_time = s.read_us(); wait(0.1f); // give time for the buffer to empty s.reset(); printf("Hello World - poll\n"); int polled_time = s.read_us(); s.stop(); wait(0.1f); // give time for the buffer to empty pc.printf("printf buffered took %d us\n", buffered_time); pc.printf("printf polled took %d us\n", polled_time); wait(0.5f); } }
Diff: Buffer.lib
- Revision:
- 12:a0d37088b405
- Parent:
- 10:9ee15ae3d1a3
diff -r 779304f9c5d2 -r a0d37088b405 Buffer.lib --- a/Buffer.lib Sun Jul 26 21:53:11 2015 +0000 +++ b/Buffer.lib Mon Mar 07 21:10:27 2016 +0000 @@ -1,1 +1,1 @@ -https://mbed.org/users/sam_grove/code/Buffer/#7b754354b99c +https://mbed.org/users/sam_grove/code/Buffer/#89564915f2a7