Mercurial > nand-ecoscentric
changeset 2396:354b32473c3e
* src/hal_diag.c (cyg_hal_plf_serial_isr): Fixed issue with UART
ISR handling. Old handler doesn't read the UxIIR register in order
to clear the interrupt flag. The resulted in endless interrupts
and the DSR never got to run.
| author | asl |
|---|---|
| date | Mon, 04 Jun 2007 20:41:22 +0000 |
| parents | b8111f0a6f98 |
| children | 64c9e46ea486 |
| files | packages/hal/arm/lpc2xxx/var/current/ChangeLog packages/hal/arm/lpc2xxx/var/current/src/hal_diag.c |
| diffstat | 2 files changed, 17 insertions(+), 5 deletions(-) [+] |
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--- a/packages/hal/arm/lpc2xxx/var/current/ChangeLog +++ b/packages/hal/arm/lpc2xxx/var/current/ChangeLog @@ -1,3 +1,10 @@ +2007-06-04 Alexey Shusharin <mrfinch@mail.ru> + + * src/hal_diag.c (cyg_hal_plf_serial_isr): Fixed issue with UART + ISR handling. Old handler doesn't read the UxIIR register in order + to clear the interrupt flag. The resulted in endless interrupts + and the DSR never got to run. + 2006-02-03 Sergei Gavrikov <sg@sgs.gomel.by> * cdl/hal_arm_lpc2xxx.cdl: Added CYGNUM_HAL_ARM_VECTOR_0x14. That
--- a/packages/hal/arm/lpc2xxx/var/current/src/hal_diag.c +++ b/packages/hal/arm/lpc2xxx/var/current/src/hal_diag.c @@ -242,16 +242,21 @@ cyg_hal_plf_serial_isr(void *__ch_data, int res = 0; channel_data_t* chan = (channel_data_t*)__ch_data; cyg_uint8 c; - cyg_uint8 stat; + cyg_uint8 iir; + CYGARC_HAL_SAVE_GP(); *__ctrlc = 0; - HAL_READ_UINT32(chan->base+CYGARC_HAL_LPC2XXX_REG_UxLSR, stat); - if ( (stat & CYGARC_HAL_LPC2XXX_REG_UxLSR_RDR) != 0 ) { + HAL_READ_UINT32(chan->base + CYGARC_HAL_LPC2XXX_REG_UxIIR, iir); + + if((iir & (CYGARC_HAL_LPC2XXX_REG_UxIIR_IIR0 | CYGARC_HAL_LPC2XXX_REG_UxIIR_IIR1 | + CYGARC_HAL_LPC2XXX_REG_UxIIR_IIR2)) == CYGARC_HAL_LPC2XXX_REG_UxIIR_IIR2) + { + // Rx data available or character timeout + // Read data in order to clear interrupt HAL_READ_UINT32(chan->base+CYGARC_HAL_LPC2XXX_REG_UxRBR, c); - if( cyg_hal_is_break( &c , 1 ) ) - *__ctrlc = 1; + if( cyg_hal_is_break( &c , 1 ) ) *__ctrlc = 1; res = CYG_ISR_HANDLED; }