From 8221cc260ef7707efbeea862c5a599371fa1cd9e Mon Sep 17 00:00:00 2001 From: Mariano Alvira Date: Wed, 1 Apr 2009 17:57:02 -0400 Subject: [PATCH] starting a rftest rx test. This will put it in the continuous receive mode and send the bytes received to the uart. --- tests/rftest-rx.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 tests/rftest-rx.c diff --git a/tests/rftest-rx.c b/tests/rftest-rx.c new file mode 100644 index 000000000..eeb0b3d9c --- /dev/null +++ b/tests/rftest-rx.c @@ -0,0 +1,49 @@ +#define GPIO_FUNC_SEL0 0x80000018 /* GPIO 15 - 0; 2 bit blocks */ + +#define BASE_UART1 0x80005000 +#define UART1_CON 0x80005000 +#define UART1_STAT 0x80005004 +#define UART1_DATA 0x80005008 +#define UR1CON 0x8000500c +#define UT1CON 0x80005010 +#define UART1_CTS 0x80005014 +#define UART1_BR 0x80005018 + +#define MACA_RESET 0x80004004 +#define MACA_CONTROL 0x8000400c +#define MACA_STATUS 0x80004010 +#define MACA_DMARX 0x80004080 +#define MACA_DMATX 0x80004084 +#define MACA_GETRXLVL 0x80004098 +#define MACA_PREAMBLE 0x8000411c + +#include "embedded_types.h" + +void main(void) { + /* Restore UART regs. to default */ + /* in case there is still bootloader state leftover */ + + *(volatile uint32_t *)UART1_CON = 0x0000c800; /* mask interrupts, 16 bit sample --- helps explain the baud rate */ + + /* INC = 767; MOD = 9999 works: 115200 @ 24 MHz 16 bit sample */ + #define INC 767 + #define MOD 9999 + *(volatile uint32_t *)UART1_BR = INC<<16 | MOD; + + /* see Section 11.5.1.2 Alternate Modes */ + /* you must enable the peripheral first BEFORE setting the function in GPIO_FUNC_SEL */ + /* From the datasheet: "The peripheral function will control operation of the pad IF */ + /* THE PERIPHERAL IS ENABLED. */ + *(volatile uint32_t *)UART1_CON = 0x00000003; /* enable receive and transmit */ + *(volatile uint32_t *)GPIO_FUNC_SEL0 = ( (0x01 << (14*2)) | (0x01 << (15*2)) ); /* set GPIO15-14 to UART (UART1 TX and RX)*/ + + uint8_t c; + while(1) { + if(*(volatile uint32_t*)UR1CON > 0) { + /* Receive buffer isn't empty */ + /* read a byte and write it to the transmit buffer */ + c = *(volatile uint32_t *)UART1_DATA; + *(volatile uint32_t *)UART1_DATA = c; + } + }; +}