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Moved and updated code for AT91SAM7S

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This commit is contained in:
ksb 2009-07-11 14:22:45 +00:00
parent 1658d6b42c
commit 1f72d3ea32
32 changed files with 9799 additions and 0 deletions
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196
cpu/arm/at91sam7s/debug-uart.c Normal file
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#include <debug-uart.h>
#include <sys-interrupt.h>
/* #include <strformat.h> */
#include <AT91SAM7S64.h>
#include <string.h>
#include <interrupt-utils.h>
#ifndef DBG_XMIT_BUFFER_LEN
#define DBG_XMIT_BUFFER_LEN 3024
#endif
#ifndef DBG_RECV_BUFFER_LEN
#define DBG_RECV_BUFFER_LEN 256
#endif
static unsigned char dbg_xmit_buffer[DBG_XMIT_BUFFER_LEN];
static unsigned char dbg_recv_buffer[DBG_RECV_BUFFER_LEN];
static unsigned int dbg_recv_buffer_len = 0;
void
dbg_setup_uart()
{
/* Setup PIO ports */
*AT91C_PIOA_OER = AT91C_PA10_DTXD;
*AT91C_PIOA_ODR = AT91C_PA9_DRXD;
*AT91C_PIOA_ASR = AT91C_PA10_DTXD | AT91C_PA9_DRXD;
*AT91C_PIOA_PDR = AT91C_PA10_DTXD | AT91C_PA9_DRXD;
*AT91C_DBGU_MR = AT91C_US_PAR_NONE | AT91C_US_CHMODE_NORMAL;
*AT91C_DBGU_IDR= 0xffffffff;
*AT91C_DBGU_BRGR = MCK / (115200 * 16);
*AT91C_DBGU_CR = AT91C_US_RXEN | AT91C_US_TXEN;
*AT91C_DBGU_TPR = (unsigned int)dbg_xmit_buffer;
*AT91C_DBGU_TNPR = (unsigned int)dbg_xmit_buffer;
}
static void (*input_func)(const char *inp, unsigned int len) = NULL;
static int dbg_recv_handler_func()
{
if (!(*AT91C_DBGU_CSR & AT91C_US_RXRDY)) return 0;
unsigned char c = *AT91C_DBGU_RHR;
/* Leave one byte for '\0' */
if (dbg_recv_buffer_len < (DBG_RECV_BUFFER_LEN -1)) {
dbg_recv_buffer[dbg_recv_buffer_len++] = c;
}
if (c == '\n') {
dbg_recv_buffer[dbg_recv_buffer_len] = '\0';
if (input_func) input_func((char*)dbg_recv_buffer, dbg_recv_buffer_len);
dbg_recv_buffer_len = 0;
}
return 1;
}
static SystemInterruptHandler dbg_recv_handler = {NULL, dbg_recv_handler_func};
void
dbg_set_input_handler(void (*handler)(const char *inp, unsigned int len))
{
input_func = handler;
sys_interrupt_append_handler(&dbg_recv_handler);
sys_interrupt_enable();
*AT91C_DBGU_IER = AT91C_US_RXRDY;
}
static volatile unsigned char mutex = 0;
unsigned int
dbg_send_bytes(const unsigned char *seq, unsigned int len)
{
unsigned short next_count;
unsigned short current_count;
unsigned short left;
unsigned int save = disableIRQ();
if (mutex) {
restoreIRQ(save);
return 0; /* Buffer being updated */
}
mutex = 1; /* Prevent interrupts from messing up the transmission */
*AT91C_DBGU_PTCR =AT91C_PDC_TXTDIS; /* Stop transmitting */
while(*AT91C_DBGU_PTSR & AT91C_PDC_TXTEN); /* Wait until stopped */
next_count = *AT91C_DBGU_TNCR;
current_count = *AT91C_DBGU_TCR;
left = DBG_XMIT_BUFFER_LEN - next_count - current_count;
if (left > 0) {
if (left < len) len = left;
if (next_count > 0) {
/* Buffer is wrapped */
memcpy(&dbg_xmit_buffer[next_count], seq, len);
*AT91C_DBGU_TNCR = next_count + len;
} else {
unsigned char *to = ((unsigned char*)*AT91C_DBGU_TPR) + current_count;
left = &dbg_xmit_buffer[DBG_XMIT_BUFFER_LEN] - to;
if (len > left) {
unsigned int wrapped = len - left;
memcpy(to, seq, left);
memcpy(dbg_xmit_buffer, &seq[left], wrapped);
*AT91C_DBGU_TCR = current_count + left;
*AT91C_DBGU_TNCR = wrapped;
} else {
memcpy(to, seq, len);
*AT91C_DBGU_TCR = current_count + len;
}
}
} else {
len = 0;
}
*AT91C_DBGU_PTCR =AT91C_PDC_TXTEN; /* Restart transmission */
mutex = 0;
restoreIRQ(save);
return len;
}
static unsigned char dbg_write_overrun = 0;
void
dbg_putchar(const char ch)
{
if (dbg_write_overrun) {
if (dbg_send_bytes((const unsigned char*)"^",1) != 1) return;
}
dbg_write_overrun = 0;
if (dbg_send_bytes((const unsigned char*)&ch,1) != 1) {
dbg_write_overrun = 1;
}
}
void
dbg_blocking_putchar(const char ch)
{
if (dbg_write_overrun) {
while (dbg_send_bytes((const unsigned char*)"^",1) != 1);
}
dbg_write_overrun = 0;
while (dbg_send_bytes((const unsigned char*)&ch,1) != 1);
}
#if 0
static StrFormatResult
dbg_write_cb(void *user_data, const char *data, unsigned int len)
{
if (dbg_send_bytes((const unsigned char*)data, len) != len) {
dbg_write_overrun = 1;
return STRFORMAT_FAILED;
}
return STRFORMAT_OK;
}
void
dbg_printf(const char *format, ...)
{
static const StrFormatContext ctxt = {dbg_write_cb, NULL};
va_list ap;
if (dbg_write_overrun) {
if (dbg_send_bytes((const unsigned char*)"^",1) != 1) return;
}
dbg_write_overrun = 0;
va_start(ap, format);
format_str_v(&ctxt, format, ap);
va_end(ap);
}
static StrFormatResult
dbg_write_blocking_cb(void *user_data, const char *data, unsigned int len)
{
unsigned int left = len;
while(left > 0) {
unsigned int sent = dbg_send_bytes((const unsigned char*)data, left);
left -= sent;
data += sent;
}
return STRFORMAT_OK;
}
void
dbg_blocking_printf(const char *format, ...)
{
static const StrFormatContext ctxt = {dbg_write_blocking_cb, NULL};
va_list ap;
if (dbg_write_overrun) {
while (dbg_send_bytes((const unsigned char*)"^",1) != 1);
}
dbg_write_overrun = 0;
va_start(ap, format);
format_str_v(&ctxt, format, ap);
va_end(ap);
}
#endif
void
dbg_drain()
{
while(!(*AT91C_DBGU_CSR & AT91C_US_TXBUFE));
}