Vince et Yann
/
APP1_customProtocole
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Dependencies: mbed
Fork of
APP1_customProtocole
by 
Yann Lemay-Sévigny
customUART.cpp@7:7424c51ee942, 2016-01-12 (annotated)
- Committer:
- yannolecool
- Date:
- Tue Jan 12 20:28:24 2016 +0000
- Revision:
- 7:7424c51ee942
- Parent:
- 6:5c8e02d5ebcc
Code final comment? avec UART custom
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| yannolecool | 7:7424c51ee942 | 1 | /* |
| yannolecool | 7:7424c51ee942 | 2 | APP1 S5 info |
| yannolecool | 7:7424c51ee942 | 3 | Author : lemy2301 and gagv2103 |
| yannolecool | 7:7424c51ee942 | 4 | */ |
| yannolecool | 7:7424c51ee942 | 5 | |
| yannolecool | 5:259661cbf9c3 | 6 | #include "customUART.h" |
| yannolecool | 5:259661cbf9c3 | 7 | |
| yannolecool | 5:259661cbf9c3 | 8 | CustomUART::CustomUART() |
| yannolecool | 5:259661cbf9c3 | 9 | { |
| yannolecool | 5:259661cbf9c3 | 10 | //Choose the right pin for UART3 port (STEP5) |
| yannolecool | 5:259661cbf9c3 | 11 | volatile int* PINSEL0 = (volatile int*)0x4002C000; |
| yannolecool | 5:259661cbf9c3 | 12 | *PINSEL0 = *PINSEL0 | 0b10 | (0b10 << 2); |
| yannolecool | 5:259661cbf9c3 | 13 | |
| yannolecool | 5:259661cbf9c3 | 14 | //Select the good clock to configure the baud rate (STEP2) |
| yannolecool | 5:259661cbf9c3 | 15 | volatile int* PCLKSEL1 = (volatile int*)0x400FC1AC; |
| yannolecool | 5:259661cbf9c3 | 16 | *PCLKSEL1 = *PCLKSEL1 | (0b01 << 18); |
| yannolecool | 5:259661cbf9c3 | 17 | |
| yannolecool | 5:259661cbf9c3 | 18 | //Enable the UART3 port (STEP1) |
| yannolecool | 5:259661cbf9c3 | 19 | volatile int* PCONP = (volatile int*)0x400FC0C4; |
| yannolecool | 5:259661cbf9c3 | 20 | *PCONP = *PCONP | (0b1 << 25); |
| yannolecool | 5:259661cbf9c3 | 21 | |
| yannolecool | 5:259661cbf9c3 | 22 | //Enable clock division to have good baud rate (STEP3) |
| yannolecool | 5:259661cbf9c3 | 23 | volatile int* U3LCR = (volatile int*)0x4009C00C; |
| yannolecool | 5:259661cbf9c3 | 24 | volatile int* U3DLL = (volatile int*)0x4009C000; |
| yannolecool | 5:259661cbf9c3 | 25 | volatile int* U3DLM = (volatile int*)0x4009C004; |
| yannolecool | 5:259661cbf9c3 | 26 | *U3LCR = *U3LCR | (0b1 << 7); |
| yannolecool | 5:259661cbf9c3 | 27 | *U3DLM = 0x02; |
| yannolecool | 5:259661cbf9c3 | 28 | *U3DLL = 0x71; |
| yannolecool | 5:259661cbf9c3 | 29 | *U3LCR = 0b11; |
| yannolecool | 5:259661cbf9c3 | 30 | |
| yannolecool | 5:259661cbf9c3 | 31 | //Enable the UART FIFO (STEP4) |
| yannolecool | 5:259661cbf9c3 | 32 | volatile int* U3FCR = (volatile int*)0x4009C008; |
| yannolecool | 5:259661cbf9c3 | 33 | *U3FCR = *U3FCR | 0b1; |
| yannolecool | 5:259661cbf9c3 | 34 | |
| yannolecool | 6:5c8e02d5ebcc | 35 | //Set the pointer for the writting process |
| yannolecool | 6:5c8e02d5ebcc | 36 | U3THR = (volatile int*)0x4009C000; |
| yannolecool | 5:259661cbf9c3 | 37 | } |
| yannolecool | 5:259661cbf9c3 | 38 | |
| yannolecool | 5:259661cbf9c3 | 39 | void CustomUART::putc(const char caracter) |
| yannolecool | 5:259661cbf9c3 | 40 | { |
| yannolecool | 6:5c8e02d5ebcc | 41 | //Write the caracter on the register |
| yannolecool | 5:259661cbf9c3 | 42 | *U3THR = caracter; |
| yannolecool | 5:259661cbf9c3 | 43 | } |
| yannolecool | 5:259661cbf9c3 | 44 |