mirror of https://github.com/ARMmbed/mbed-os.git
CYW43XXX: Add generic transport layer
Martino Facchin
pennam
parent
8a19e3ecfc
commit
c0a8e41719
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@ -20,7 +20,9 @@
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#include "CyH4TransportDriver.h"
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#include "mbed_power_mgmt.h"
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#include "drivers/InterruptIn.h"
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#if !defined(CYW43XXX_UNBUFFERED_UART)
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#include "cybsp_types.h"
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#endif
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#include "Callback.h"
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#include "rtos/ThisThread.h"
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#include <chrono>
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@ -32,8 +34,12 @@ namespace cypress_ble {
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using namespace std::chrono_literals;
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CyH4TransportDriver::CyH4TransportDriver(PinName tx, PinName rx, PinName cts, PinName rts, PinName bt_power_name, int baud, PinName bt_host_wake_name, PinName bt_device_wake_name, uint8_t host_wake_irq, uint8_t dev_wake_irq) :
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cts(cts), rts(rts),
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#if defined(CYW43XXX_UNBUFFERED_UART)
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uart(tx, rx),
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#else
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tx(tx), rx(rx),
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#endif
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cts(cts), rts(rts),
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bt_host_wake_name(bt_host_wake_name),
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bt_device_wake_name(bt_device_wake_name),
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bt_power(bt_power_name, PIN_OUTPUT, PullNone, 0),
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@ -47,10 +53,13 @@ CyH4TransportDriver::CyH4TransportDriver(PinName tx, PinName rx, PinName cts, Pi
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bt_host_wake_active = false;
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}
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CyH4TransportDriver::CyH4TransportDriver(PinName tx, PinName rx, PinName cts, PinName rts, PinName bt_power_name, int baud) :
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cts(cts),
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rts(rts),
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CyH4TransportDriver::CyH4TransportDriver(PinName tx, PinName rx, PinName cts, PinName rts, PinName bt_power_name, int baud) :
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#if defined(CYW43XXX_UNBUFFERED_UART)
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uart(tx, rx),
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#else
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tx(tx), rx(rx),
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#endif
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cts(cts), rts(rts),
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bt_host_wake_name(NC),
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bt_device_wake_name(NC),
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bt_power(bt_power_name, PIN_OUTPUT, PullNone, 0),
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@ -107,16 +116,31 @@ void CyH4TransportDriver::bt_host_wake_fall_irq_handler(void)
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}
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}
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#if defined(CYW43XXX_UNBUFFERED_UART)
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void CyH4TransportDriver::on_controller_irq()
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#else
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static void on_controller_irq(void *callback_arg, cyhal_uart_event_t event)
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#endif
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{
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#if !defined(CYW43XXX_UNBUFFERED_UART)
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(void)(event);
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cyhal_uart_t *uart_obj = (cyhal_uart_t *)callback_arg;
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#endif
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sleep_manager_lock_deep_sleep();
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#if defined(CYW43XXX_UNBUFFERED_UART)
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while (uart.readable()) {
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uint8_t char_received;
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if (uart.read(&char_received, 1)) {
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CordioHCITransportDriver::on_data_received(&char_received, 1);
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}
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#else
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while (cyhal_uart_readable(uart_obj)) {
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uint8_t char_received;
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cyhal_uart_getc(uart_obj, &char_received, 0);
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CyH4TransportDriver::on_data_received(&char_received, 1);
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#endif
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}
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sleep_manager_unlock_deep_sleep();
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@ -129,6 +153,26 @@ void CyH4TransportDriver::initialize()
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bt_power = 0;
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rtos::ThisThread::sleep_for(1ms);
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#if defined(CYW43XXX_UNBUFFERED_UART)
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uart.baud(DEF_BT_BAUD_RATE);
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uart.format(
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/* bits */ 8,
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/* parity */ mbed::SerialBase::None,
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/* stop bit */ 1
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);
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uart.set_flow_control(
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/* flow */ mbed::SerialBase::RTSCTS,
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/* rts */ rts,
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/* cts */ cts
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);
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uart.attach(
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mbed::callback(this, &CyH4TransportDriver::on_controller_irq),
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mbed::SerialBase::RxIrq
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);
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#else
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cyhal_uart_init(&uart, tx, rx, NULL, NULL);
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const cyhal_uart_cfg_t uart_cfg = { .data_bits = 8, .stop_bits = 1, .parity = CYHAL_UART_PARITY_NONE, .rx_buffer = NULL, .rx_buffer_size = 0 };
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@ -137,6 +181,7 @@ void CyH4TransportDriver::initialize()
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cyhal_uart_clear(&uart);
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cyhal_uart_register_callback(&uart, &on_controller_irq, &uart);
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cyhal_uart_enable_event(&uart, CYHAL_UART_IRQ_RX_NOT_EMPTY, CYHAL_ISR_PRIORITY_DEFAULT, true);
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#endif
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bt_power = 1;
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@ -160,6 +205,7 @@ void CyH4TransportDriver::initialize()
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void CyH4TransportDriver::terminate()
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{
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#if !defined(CYW43XXX_UNBUFFERED_UART)
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cyhal_uart_event_t enable_irq_event = (cyhal_uart_event_t)(CYHAL_UART_IRQ_RX_DONE
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| CYHAL_UART_IRQ_TX_DONE
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| CYHAL_UART_IRQ_RX_NOT_EMPTY
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@ -170,6 +216,7 @@ void CyH4TransportDriver::terminate()
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CYHAL_ISR_PRIORITY_DEFAULT,
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false
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);
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#endif
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if(bt_host_wake.is_connected())
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{
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@ -182,7 +229,11 @@ void CyH4TransportDriver::terminate()
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bt_power = 0; //BT_POWER is an output, should not be freed only set inactive
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#if defined(CYW43XXX_UNBUFFERED_UART)
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uart.close();
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#else
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cyhal_uart_free(&uart);
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#endif
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}
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uint16_t CyH4TransportDriver::write(uint8_t type, uint16_t len, uint8_t *pData)
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@ -194,11 +245,20 @@ uint16_t CyH4TransportDriver::write(uint8_t type, uint16_t len, uint8_t *pData)
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while (i < len + 1) {
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uint8_t to_write = i == 0 ? type : pData[i - 1];
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#if defined(CYW43XXX_UNBUFFERED_UART)
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while (uart.writeable() == 0);
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uart.write(&to_write, 1);
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#else
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while (cyhal_uart_writable(&uart) == 0);
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cyhal_uart_putc(&uart, to_write);
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#endif
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++i;
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}
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#if defined(CYW43XXX_UNBUFFERED_UART)
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while (uart.writeable() == 0);
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#else
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while(cyhal_uart_is_tx_active(&uart));
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#endif
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deassert_bt_dev_wake();
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sleep_manager_unlock_deep_sleep();
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@ -234,8 +294,12 @@ void CyH4TransportDriver::deassert_bt_dev_wake()
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void CyH4TransportDriver::update_uart_baud_rate(int baud)
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{
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#if defined(CYW43XXX_UNBUFFERED_UART)
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uart.baud((uint32_t)baud);
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#else
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uint32_t ignore;
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cyhal_uart_set_baud(&uart, (uint32_t)baud, &ignore);
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#endif
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}
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bool CyH4TransportDriver::get_enabled_powersave()
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@ -24,7 +24,12 @@
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#include "ble/driver/CordioHCITransportDriver.h"
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#include "drivers/DigitalInOut.h"
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#include "drivers/InterruptIn.h"
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#if defined(CYW43XXX_UNBUFFERED_UART)
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#include "drivers/UnbufferedSerial.h"
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#else
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#include "cyhal_uart.h"
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#endif
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namespace ble {
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namespace vendor {
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@ -81,6 +86,10 @@ public:
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private:
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void assert_bt_dev_wake();
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void deassert_bt_dev_wake();
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#if defined(CYW43XXX_UNBUFFERED_UART)
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void on_controller_irq();
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#endif
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// Use HAL serial because Cypress UART is buffered.
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// The PUTC function does not actually blocks until data is fully transmitted,
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@ -89,12 +98,15 @@ private:
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// However UART APIs does not prevent the BT radio from going to sleep.
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// Use the HAL APIs to prevent the radio from going to sleep until UART transmition is complete.
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// Mbed layer has no API that distinguish between data in HW buffer v.s. data already transmitted.
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#if defined(CYW43XXX_UNBUFFERED_UART)
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mbed::UnbufferedSerial uart;
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#else
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cyhal_uart_t uart;
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PinName cts;
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PinName rts;
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#endif
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PinName tx;
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PinName rx;
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PinName cts;
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PinName rts;
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PinName bt_host_wake_name;
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PinName bt_device_wake_name;
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