10 Commits

Author	SHA1	Message	Date
Harald Welte	12d4bdfbb1	mode_cardemu: Process RX interrupts before TX ... It's always more important to pull out a received character from the receive holding register to avoid the risk of overflow, so let's do that first.	2016-03-02 10:31:03 +01:00
Harald Welte	acae412b2a	explicitly inform card_emu once data to transmit has arrived	2016-03-02 10:27:58 +01:00
Harald Welte	8a416b1812	mode_cardemu: fix ordering of events when switching rx/tx mode	2016-03-01 00:42:04 +01:00
Harald Welte	45688d4c3b	mode_cardemu: Disable UART TXRDY generation if we don't have data to TX ... When the ISO7816 state machine requires us to transmit something, but we don't have data ready to transmit, we should switch off TXRDY interrupt generation. What's missing is of course the other part that re-enabls TXRDY generation once new data is available	2016-02-29 21:35:38 +01:00
Harald Welte	54cb3d017f	host_communication/card_emu: adapt to nwe req_ctx / queuing paradignm	2016-02-29 14:12:40 +01:00
Harald Welte	c0bd7f0aaa	mode_cardemu: Move GPIO detection to IRQ, use ring buffer for UART RX ... We don't want to call into the bulk of card_emu.c from interrupt context, so let's introduce a ring buffer as a softwre-FIFO between the USART receiving a byte and the processing of that byte in card_emu.c, which is then performed from the main loop outside interrupt context.	2016-02-29 10:13:33 +01:00
Harald Welte	99f62a6def	mode_cardemu: update_fidi just needs to execute ... the actual translation of the Fi/Di values to the divider is already made, we just need to update the USART divider here.	2016-02-29 10:08:49 +01:00
Harald Welte	9dbc46e799	mode_cardemu: Proper enabling/disabling of USART IRQ sources ... we always have to disable all intrerrupts that we don't want to be enabled	2016-02-29 10:05:10 +01:00
Harald Welte	bd71768e5f	mode_card_emu: connect the update_fidi() callback	2016-02-28 19:30:05 +01:00
Harald Welte	2a6d3afd6c	re-introduce req_ctx buffers into the host communication	2016-02-28 19:29:14 +01:00