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work around perceived bug in eHCILL implementation - delay SLEEP_ACK a bit

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This commit is contained in:
matthias.ringwald@gmail.com 2014-10-16 21:29:02 +00:00
parent b7341302a0
commit e3b69236e2
1 changed files with 51 additions and 13 deletions
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64
src/hci_transport_h4_ehcill_dma.c
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@ -58,6 +58,10 @@
#include <btstack/hal_uart_dma.h>
// #include <libopencm3/stm32/gpio.h>
// #define GPIO_DEBUG_0 GPIO1
// #define GPIO_DEBUG_1 GPIO2
// #define DUMP
// #define LOG_EHCILL
@ -133,6 +137,9 @@ static uint8_t * tx_data;
static uint16_t tx_len;
static uint8_t tx_packet_type;
// work around for eHCILL problem
static timer_source_t ehcill_sleep_ack_timer;
// data source used in run_loop
static data_source_t hci_transport_h4_dma_ds = {
/* .item = */ { NULL, NULL },
@ -213,12 +220,11 @@ static int h4_close(){
return 0;
}
// extern uint32_t hal_time_current(void);
uint32_t h4_last_packet_timestamp;
static void h4_block_received(void){
read_pos += bytes_to_read;
// gpio_set(GPIOB, GPIO_DEBUG_0);
read_pos += bytes_to_read;
// act
switch (h4_state) {
@ -227,7 +233,6 @@ static void h4_block_received(void){
case HCI_ACL_DATA_PACKET:
h4_state = H4_W4_ACL_HEADER;
bytes_to_read = HCI_ACL_HEADER_SIZE;
// h4_last_packet_timestamp = hal_time_current();
break;
case HCI_EVENT_PACKET:
h4_state = H4_W4_EVENT_HEADER;
@ -285,12 +290,26 @@ static void h4_block_received(void){
if (bytes_to_read) {
ehcill_uart_dma_receive_block(&hci_packet[read_pos], bytes_to_read);
}
// gpio_clear(GPIOB, GPIO_DEBUG_0);
}
static int h4_can_send_packet_now(uint8_t packet_type){
return tx_state == TX_IDLE;
}
static void ehcill_sleep_ack_timer_handler(timer_source_t * timer){
tx_state = TX_W4_EHCILL_SENT;
// gpio_clear(GPIOB, GPIO_DEBUG_1);
hal_uart_dma_send_block(&ehcill_command_to_send, 1);
}
static void ehcill_sleep_ack_timer_setup(){
// setup timer
ehcill_sleep_ack_timer.process = &ehcill_sleep_ack_timer_handler;
run_loop_set_timer(&ehcill_sleep_ack_timer, 50);
run_loop_add_timer(&ehcill_sleep_ack_timer);
embedded_trigger();
}
static void h4_block_sent(void){
switch (tx_state){
@ -300,15 +319,22 @@ static void h4_block_sent(void){
hal_uart_dma_send_block(tx_data, tx_len);
break;
case TX_W4_PACKET_SENT:
// send pending ehcill command
if (ehcill_command_to_send){
tx_state = TX_W4_EHCILL_SENT;
hal_uart_dma_send_block(&ehcill_command_to_send, 1);
break;
// send pending ehcill command if neccessary
switch (ehcill_command_to_send){
case EHCILL_GO_TO_SLEEP_ACK:
ehcill_sleep_ack_timer_setup();
break;
case EHCILL_WAKE_UP_IND:
tx_state = TX_W4_EHCILL_SENT;
// gpio_clear(GPIOB, GPIO_DEBUG_1);
hal_uart_dma_send_block(&ehcill_command_to_send, 1);
break;
default:
// trigger run loop
tx_state = TX_DONE;
embedded_trigger();
break;
}
tx_state = TX_DONE;
// trigger run loop
embedded_trigger();
break;
case TX_W4_EHCILL_SENT:
if (ehcill_command_to_send == EHCILL_GO_TO_SLEEP_ACK) {
@ -330,6 +356,10 @@ static void dump(uint8_t *data, uint16_t len){
int i;
for (i=0; i<len;i++){
printf("%02X ", ((uint8_t *)data)[i]);
if(i>30) {
printf("... %u more bytes", len - i);
break;
}
}
printf("\n");
}
@ -376,7 +406,13 @@ static void ehcill_schedule_ecill_command(uint8_t command){
ehcill_command_to_send = command;
switch (tx_state){
case TX_IDLE:
// new: change state so BTstack cannot send
// new: setup timer;
// new: break
case TX_DONE:
// gpio_clear(GPIOB, GPIO_DEBUG_1);
tx_state = TX_W4_EHCILL_SENT;
hal_uart_dma_send_block(&ehcill_command_to_send, 1);
break;
@ -401,6 +437,8 @@ static void ehcill_handle(uint8_t action){
#ifdef LOG_EHCILL
log_info("EHCILL: GO_TO_SLEEP_IND RX");
#endif
// gpio_set(GPIOB, GPIO_DEBUG_1);
ehcill_schedule_ecill_command(EHCILL_GO_TO_SLEEP_ACK);
break;