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fixed comments

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This commit is contained in:
Markus Fröschle
2014-12-16 20:33:51 +00:00
parent a40831e6b7
commit c81fc7e7e9
4 changed files with 38 additions and 17 deletions
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29
BaS_gcc/sys/BaS.c
View File

@@ -57,6 +57,7 @@
#else
#define dbg(format, arg...) do { ; } while (0)
#endif
#define err(format, arg...) do { xprintf("ERROR: %s(): " format, __FUNCTION__, ##arg); } while (0)
/* imported routines */
extern int vec_init();
@@ -79,7 +80,9 @@ extern uint8_t _EMUTOS_SIZE[];
static inline bool pic_txready(void)
{
if (MCF_PSC3_PSCSR & MCF_PSC_PSCSR_TXRDY)
{
return true;
}
return false;
}
@@ -90,26 +93,36 @@ static inline bool pic_txready(void)
static inline bool pic_rxready(void)
{
if (MCF_PSC3_PSCSR & MCF_PSC_PSCSR_RXRDY)
{
return true;
}
return false;
}
void write_pic_byte(uint8_t value)
{
/* Wait until the transmitter is ready or 1000us are passed */
/*
* Wait until the transmitter is ready or 1000us are passed
*/
waitfor(1000, pic_txready);
/* Transmit the byte */
/*
* Transmit the byte
*/
*(volatile uint8_t*)(&MCF_PSC3_PSCTB_8BIT) = value; // Really 8-bit
}
uint8_t read_pic_byte(void)
{
/* Wait until a byte has been received or 1000us are passed */
/*
* Wait until a byte has been received or 1000us are passed
*/
waitfor(1000, pic_rxready);
/* Return the received byte */
/*
* Return the received byte
*/
return * (volatile uint8_t *) (&MCF_PSC3_PSCTB_8BIT); // Really 8-bit
}
@@ -119,13 +132,17 @@ void pic_init(void)
xprintf("initialize the PIC: ");
/* Send the PIC initialization string */
/*
* Send the PIC initialization string
*/
write_pic_byte('A');
write_pic_byte('C');
write_pic_byte('P');
write_pic_byte('F');
/* Read the 3-char answer string. Should be "OK!". */
/*
* Read the 3-char answer string. Should be "OK!".
*/
answer[0] = read_pic_byte();
answer[1] = read_pic_byte();
answer[2] = read_pic_byte();

22
BaS_gcc/sys/interrupts.c
View File

@@ -182,7 +182,7 @@ int pic_interrupt_handler(void *arg1, void *arg2)
uint8_t *rtc_data = (uint8_t *) 0xffff8963;
int index = 0;
xprintf("PIC interrupt: requesting RTC data\r\n");
err("PIC interrupt: requesting RTC data\r\n");
MCF_PSC3_PSCTB_8BIT = 0x82; // header byte to PIC
do
@@ -305,7 +305,7 @@ bool irq6_handler(uint32_t sf1, uint32_t sf2)
if (FALCON_MFP_IPRA || FALCON_MFP_IPRB)
{
blink_led();
blink_led();
}
return handled;
@@ -328,23 +328,27 @@ void irq7_handler(void)
dbg("IRQ7!\r\n");
if ((handle = pci_get_interrupt_cause()) > 0)
{
newvalue = pci_call_interrupt_chain(handle, value);
if (newvalue == value)
{
dbg("interrupt not handled!\r\n");
}
newvalue = pci_call_interrupt_chain(handle, value);
if (newvalue == value)
{
dbg("interrupt not handled!\r\n");
}
}
}
#endif /* MACHINE_M548X */
#if defined(MACHINE_FIREBEE)
/*
* Firebee/Falcon Videl registers
* TODO: should go into an include file
*/
#define vbasehi (* (volatile uint8_t *) 0xffff8201)
#define vbasemid (* (volatile uint8_t *) 0xffff8203)
#define vbaselow (* (volatile uint8_t *) 0xffff820d)
#define vwrap (* (volatile uint16_t *) 0xffff8210)
#define vde (* (volatile uint16_t *) 0xffff82aa)
#define vdb (* (volatile uint16_t *) 0xffff82a8)
#define vde (* (volatile uint16_t *) 0xffff82aa)
#define vdb (* (volatile uint16_t *) 0xffff82a8)
/*
* this is the higlevel interrupt service routine for gpt0 timer interrupts.