Vince et Yann
/
APP1_customProtocole
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Dependencies: mbed
Fork of
APP1_customProtocole
by 
Yann Lemay-Sévigny
customUART.cpp@5:259661cbf9c3, 2016-01-11 (annotated)
- Committer:
- yannolecool
- Date:
- Mon Jan 11 04:04:54 2016 +0000
- Revision:
- 5:259661cbf9c3
- Child:
- 6:5c8e02d5ebcc
Ajout de l'interface custom pour le UART
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| yannolecool | 5:259661cbf9c3 | 1 | #include "customUART.h" |
| yannolecool | 5:259661cbf9c3 | 2 | |
| yannolecool | 5:259661cbf9c3 | 3 | CustomUART::CustomUART() |
| yannolecool | 5:259661cbf9c3 | 4 | { |
| yannolecool | 5:259661cbf9c3 | 5 | //Choose the right pin for UART3 port (STEP5) |
| yannolecool | 5:259661cbf9c3 | 6 | volatile int* PINSEL0 = (volatile int*)0x4002C000; |
| yannolecool | 5:259661cbf9c3 | 7 | *PINSEL0 = *PINSEL0 | 0b10 | (0b10 << 2); |
| yannolecool | 5:259661cbf9c3 | 8 | |
| yannolecool | 5:259661cbf9c3 | 9 | //Select the good clock to configure the baud rate (STEP2) |
| yannolecool | 5:259661cbf9c3 | 10 | volatile int* PCLKSEL1 = (volatile int*)0x400FC1AC; |
| yannolecool | 5:259661cbf9c3 | 11 | *PCLKSEL1 = *PCLKSEL1 | (0b01 << 18); |
| yannolecool | 5:259661cbf9c3 | 12 | |
| yannolecool | 5:259661cbf9c3 | 13 | //Enable the UART3 port (STEP1) |
| yannolecool | 5:259661cbf9c3 | 14 | volatile int* PCONP = (volatile int*)0x400FC0C4; |
| yannolecool | 5:259661cbf9c3 | 15 | *PCONP = *PCONP | (0b1 << 25); |
| yannolecool | 5:259661cbf9c3 | 16 | |
| yannolecool | 5:259661cbf9c3 | 17 | //Enable clock division to have good baud rate (STEP3) |
| yannolecool | 5:259661cbf9c3 | 18 | volatile int* U3LCR = (volatile int*)0x4009C00C; |
| yannolecool | 5:259661cbf9c3 | 19 | volatile int* U3DLL = (volatile int*)0x4009C000; |
| yannolecool | 5:259661cbf9c3 | 20 | volatile int* U3DLM = (volatile int*)0x4009C004; |
| yannolecool | 5:259661cbf9c3 | 21 | |
| yannolecool | 5:259661cbf9c3 | 22 | *U3LCR = *U3LCR | (0b1 << 7); |
| yannolecool | 5:259661cbf9c3 | 23 | *U3DLM = 0x02; |
| yannolecool | 5:259661cbf9c3 | 24 | *U3DLL = 0x71; |
| yannolecool | 5:259661cbf9c3 | 25 | *U3LCR = 0b11; |
| yannolecool | 5:259661cbf9c3 | 26 | |
| yannolecool | 5:259661cbf9c3 | 27 | //Enable the UART FIFO (STEP4) |
| yannolecool | 5:259661cbf9c3 | 28 | volatile int* U3FCR = (volatile int*)0x4009C008; |
| yannolecool | 5:259661cbf9c3 | 29 | *U3FCR = *U3FCR | 0b1; |
| yannolecool | 5:259661cbf9c3 | 30 | |
| yannolecool | 5:259661cbf9c3 | 31 | |
| yannolecool | 5:259661cbf9c3 | 32 | } |
| yannolecool | 5:259661cbf9c3 | 33 | |
| yannolecool | 5:259661cbf9c3 | 34 | void CustomUART::putc(const char caracter) |
| yannolecool | 5:259661cbf9c3 | 35 | { |
| yannolecool | 5:259661cbf9c3 | 36 | volatile int* U3THR = (volatile int*)0x4009C000; |
| yannolecool | 5:259661cbf9c3 | 37 | *U3THR = caracter; |
| yannolecool | 5:259661cbf9c3 | 38 | } |
| yannolecool | 5:259661cbf9c3 | 39 |