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wiced: support no flowcontrol in btstack_uart_block_wiced.c

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This commit is contained in:
Matthias Ringwald 2017-05-02 10:49:24 +02:00
parent 0e02617b40
commit 98b5831b73
1 changed files with 48 additions and 21 deletions
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69
port/wiced/btstack_uart_block_wiced.c
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@ -65,7 +65,7 @@
#error HCI_OUTGOING_PRE_BUFFER_SIZE not defined. Please update hci.h
#endif
/* Default of 512 bytes should be fine. Only needed if WICED_BT_UART_MANUAL_CTS_RTS */
// Default of 512 bytes should be fine. Only needed with BTSTACK_FLOW_CONTROL_UART
#ifndef RX_RING_BUFFER_SIZE
#define RX_RING_BUFFER_SIZE 512
#endif
@ -89,10 +89,8 @@ static wiced_worker_thread_t rx_worker_thread;
static uint8_t * rx_worker_read_buffer;
static uint16_t rx_worker_read_size;
#ifdef WICED_BT_UART_MANUAL_CTS_RTS
static volatile wiced_ring_buffer_t rx_ring_buffer;
static volatile uint8_t rx_data[RX_RING_BUFFER_SIZE];
#endif
static wiced_ring_buffer_t rx_ring_buffer;
static uint8_t rx_data[RX_RING_BUFFER_SIZE];
// uart config
static const btstack_uart_config_t * uart_config;
@ -119,14 +117,16 @@ static wiced_result_t btstack_uart_block_wiced_main_notify_block_read(void *arg)
// executed on tx worker thread
static wiced_result_t btstack_uart_block_wiced_tx_worker_send_block(void * arg){
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL){
// wait for CTS to become low in manual flow control mode
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL && wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
while (platform_gpio_input_get(wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]) == WICED_TRUE){
wiced_rtos_delay_milliseconds(100);
wiced_rtos_delay_milliseconds(10);
}
}
// blocking send
platform_uart_transmit_bytes(wiced_bt_uart_driver, tx_worker_data_buffer, tx_worker_data_size);
// let transport know
btstack_run_loop_wiced_execute_code_on_main_thread(&btstack_uart_block_wiced_main_notify_block_send, NULL);
return WICED_SUCCESS;
@ -135,7 +135,7 @@ static wiced_result_t btstack_uart_block_wiced_tx_worker_send_block(void * arg){
// executed on rx worker thread
static wiced_result_t btstack_uart_block_wiced_rx_worker_receive_block(void * arg){
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL){
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL && wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
platform_gpio_output_low(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
}
@ -149,7 +149,7 @@ static wiced_result_t btstack_uart_block_wiced_rx_worker_receive_block(void * ar
// assumption: bytes = bytes_to_read as timeout is never
#endif
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL){
if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL && wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
platform_gpio_output_high(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
}
@ -205,20 +205,47 @@ static int btstack_uart_block_wiced_open(void){
wiced_rtos_delay_milliseconds( 100 );
// -- init UART
#ifdef WICED_BT_UART_MANUAL_CTS_RTS
// configure RTS pin as output and set to high
platform_gpio_init(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS], OUTPUT_PUSH_PULL);
platform_gpio_output_high(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
// Configure RTS
if (wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]){
switch (btstack_flow_control_mode){
case BTSTACK_FLOW_CONTROL_OFF:
// configure RTS pin as output and set to low - always on
platform_gpio_init(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS], OUTPUT_PUSH_PULL);
platform_gpio_output_low(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
break;
case BTSTACK_FLOW_CONTROL_UART:
// configuration done by platform_uart_init
break;
case BTSTACK_FLOW_CONTROL_MANUAL:
// configure RTS pin as output and set to high - controlled by btstack_uart_block_wiced_rx_worker_receive_block
platform_gpio_init(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS], OUTPUT_PUSH_PULL);
platform_gpio_output_high(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
break;
}
}
// configure CTS to input, pull-up
platform_gpio_init(wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS], INPUT_PULL_UP);
// Configure CTS
if (wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
switch (btstack_flow_control_mode){
case BTSTACK_FLOW_CONTROL_OFF:
// don't care
break;
case BTSTACK_FLOW_CONTROL_UART:
// configuration done by platform_uart_init
break;
case BTSTACK_FLOW_CONTROL_MANUAL:
// configure CTS to input, pull-up
platform_gpio_init(wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS], INPUT_PULL_UP);
break;
}
}
// use ring buffer to allow to receive RX_RING_BUFFER_SIZE/2 addition bytes - not needed with hardware UART
if (btstack_flow_control_mode != BTSTACK_FLOW_CONTROL_UART){
ring_buffer_init((wiced_ring_buffer_t *) &rx_ring_buffer, (uint8_t*) rx_data, sizeof( rx_data ) );
ring_buffer = (wiced_ring_buffer_t *) &rx_ring_buffer;
}
// use ring buffer to allow to receive RX_RING_BUFFER_SIZE/2 addition bytes before raising RTS
// casts avoid warnings because of volatile qualifier
ring_buffer_init((wiced_ring_buffer_t *) &rx_ring_buffer, (uint8_t*) rx_data, sizeof( rx_data ) );
ring_buffer = (wiced_ring_buffer_t *) &rx_ring_buffer;
#endif
platform_uart_init( wiced_bt_uart_driver, wiced_bt_uart_peripheral, &wiced_uart_config, ring_buffer );