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mode_cardemu: update_fidi just needs to execute

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the actual translation of the Fi/Di values to the divider is
already made, we just need to update the USART divider here.
This commit is contained in:
Harald Welte
2016-02-29 10:08:49 +01:00
parent 2ad0ca15a8
commit 99f62a6def
1 changed files with 4 additions and 13 deletions
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17
firmware/src_simtrace/mode_cardemu.c
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@@ -111,21 +111,12 @@ void usart_irq_rx(uint8_t uart, uint32_t csr, uint8_t byte)
int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi) int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi)
{ {
int rc; int rc;
uint8_t fi = fidi >> 4;
uint8_t di = fidi & 0xf;
Usart *usart = get_usart_by_chan(uart_chan); Usart *usart = get_usart_by_chan(uart_chan);
rc = compute_fidi_ratio(fi, di); usart->US_CR |= US_CR_RXDIS | US_CR_RSTRX;
if (rc > 0 && rc < 0x400) { usart->US_FIDI = fidi & 0x3ff;
TRACE_INFO("computed Fi(%u) Di(%u) ratio: %d", fi, di, rc); usart->US_CR |= US_CR_RXEN | US_CR_STTTO;
usart->US_CR |= US_CR_RXDIS | US_CR_RSTRX; return 0;
usart->US_FIDI = rc & 0x3ff;
usart->US_CR |= US_CR_RXEN | US_CR_STTTO;
return 0;
} else {
TRACE_INFO("computed FiDi ratio %d unsupported", rc);
return -1;
}
} }
/*********************************************************************** /***********************************************************************