nes-proj/tests/rftest-tx.c

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#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
#include "maca.h"
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#include "embedded_types.h"
#define reg(x) (*(volatile uint32_t *)(x))
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#define DELAY 400000
#define DATA 0x00401000;
void putc(uint8_t c);
void puts(uint8_t *s);
void put_hex(uint8_t x);
void put_hex16(uint16_t x);
void put_hex32(uint32_t x);
const uint8_t hex[16]={'0','1','2','3','4','5','6','7',
'8','9','a','b','c','d','e','f'};
__attribute__ ((section ("startup")))
void main(void) {
uint8_t c;
volatile uint32_t i;
volatile uint32_t *data;
uint32_t tmp;
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/* Restore UART regs. to default */
/* in case there is still bootloader state leftover */
reg(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
reg(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. */
reg(UART1_CON) = 0x00000003; /* enable receive and transmit */
reg(GPIO_FUNC_SEL0) = ( (0x01 << (14*2)) | (0x01 << (15*2)) ); /* set GPIO15-14 to UART (UART1 TX and RX)*/
reg(80009000) = 0x00050100;
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reg(MACA_RESET) = 0x3; /* reset, turn on the clock */
for(i=0; i<DELAY; i++) { continue; }
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reg(MACA_RESET) = 0x2; /* unreset, turn on the clock */
for(i=0; i<DELAY; i++) { continue; }
init_phy();
reg(MACA_CONTROL) = SMAC_MACA_CNTL_INIT_STATE;
for(i=0; i<DELAY; i++) { continue; }
data = (void *)DATA;
data[0] = 0xabc0ffee;
maca_txlen = 1;
reg(MACA_DMATX) = DATA; /* get data from somewhere */
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reg(MACA_PREAMBLE) = 0xface0fff;
#define NL "\033[K\r\n"
puts("\033[H\033[2J");
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while(1) {
puts("\033[H");
puts("rftest-tx --- " NL);
puts("base +0 +4 +8 +c +10 +14 +18 +1c " NL);
for (i = 0; i < 96; i ++) {
if ((i & 7) == 0) {
put_hex16(4 * i);
}
putc(' ');
put_hex32(reg(MACA_BASE+(4*i)));
if ((i & 7) == 7)
puts(NL);
}
puts(NL);
/* start a sequence */
reg(MACA_CONTROL) = 0x00031A03;
/* wait for it to finish */
while (((tmp = reg(MACA_STATUS)) & 15) == 14)
continue;
puts("completed status is ");
put_hex32(tmp);
puts(NL);
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for(i=0; i<DELAY; i++) { continue; }
};
}
void putc(uint8_t c) {
while(reg(UT1CON)==31); /* wait for there to be room in the buffer */
reg(UART1_DATA) = c;
}
void puts(uint8_t *s) {
while(s && *s!=0) {
putc(*s++);
}
}
void put_hex(uint8_t x)
{
putc(hex[x >> 4]);
putc(hex[x & 15]);
}
void put_hex16(uint16_t x)
{
put_hex((x >> 8) & 0xFF);
put_hex((x) & 0xFF);
}
void put_hex32(uint32_t x)
{
put_hex((x >> 24) & 0xFF);
put_hex((x >> 16) & 0xFF);
put_hex((x >> 8) & 0xFF);
put_hex((x) & 0xFF);
}