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hci_transport_h4: generalize ENABLE_CC256X_BAUDRATE_CHANGE_FLOWCONTROL_BUG_WORKAROUND

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This commit is contained in:
Matthias Ringwald 2019-05-14 18:05:13 +02:00
parent 5ff6a55bc1
commit 7741d2d072
1 changed files with 13 additions and 13 deletions
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26
src/hci_transport_h4.c
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@ -151,11 +151,11 @@ static uint8_t * hci_packet = &hci_packet_with_pre_buffer[HCI_INCOMING_PRE_BUFFE
static const uint8_t local_version_event_prefix[] = { 0x04, 0x0e, 0x0c, 0x01, 0x01, 0x10};
static const uint8_t baud_rate_command_prefix[] = { 0x01, 0x36, 0xff, 0x04};
static enum {
CC256X_WORKAROUND_IDLE,
CC256X_WORKAROUND_CHIPSET_DETECTED,
CC256X_WORKAROUND_BAUDRATE_COMMAND_SENT,
CC256X_WORKAROUND_DONE
} cc256x_workaround_state;
BAUDRATE_CHANGE_WORKAROUND_IDLE,
BAUDRATE_CHANGE_WORKAROUND_CHIPSET_DETECTED,
BAUDRATE_CHANGE_WORKAROUND_BAUDRATE_COMMAND_SENT,
BAUDRATE_CHANGE_WORKAROUND_DONE
} baudrate_change_workaround_state;
#endif
static int hci_transport_h4_set_baudrate(uint32_t baudrate){
@ -244,16 +244,16 @@ static void hci_transport_h4_block_read(void){
case H4_W4_PAYLOAD:
#ifdef ENABLE_CC256X_BAUDRATE_CHANGE_FLOWCONTROL_BUG_WORKAROUND
if (cc256x_workaround_state == CC256X_WORKAROUND_IDLE
if (baudrate_change_workaround_state == BAUDRATE_CHANGE_WORKAROUND_IDLE
&& memcmp(hci_packet, local_version_event_prefix, sizeof(local_version_event_prefix)) == 0){
if (little_endian_read_16(hci_packet, 11) == BLUETOOTH_COMPANY_ID_TEXAS_INSTRUMENTS_INC){
// detect TI CC256x controller based on manufacturer
log_info("Detected CC256x controller");
cc256x_workaround_state = CC256X_WORKAROUND_CHIPSET_DETECTED;
baudrate_change_workaround_state = BAUDRATE_CHANGE_WORKAROUND_CHIPSET_DETECTED;
} else {
// work around not needed
log_info("Bluetooth controller not by TI");
cc256x_workaround_state = CC256X_WORKAROUND_DONE;
baudrate_change_workaround_state = BAUDRATE_CHANGE_WORKAROUND_DONE;
}
}
#endif
@ -265,8 +265,8 @@ static void hci_transport_h4_block_read(void){
}
#ifdef ENABLE_CC256X_BAUDRATE_CHANGE_FLOWCONTROL_BUG_WORKAROUND
if (cc256x_workaround_state == CC256X_WORKAROUND_BAUDRATE_COMMAND_SENT){
cc256x_workaround_state = CC256X_WORKAROUND_IDLE;
if (baudrate_change_workaround_state == BAUDRATE_CHANGE_WORKAROUND_BAUDRATE_COMMAND_SENT){
baudrate_change_workaround_state = BAUDRATE_CHANGE_WORKAROUND_IDLE;
// avoid flowcontrol problem by reading expected hci command complete event of 7 bytes in a single block read
h4_state = H4_W4_PAYLOAD;
bytes_to_read = 7;
@ -317,10 +317,10 @@ static int hci_transport_h4_send_packet(uint8_t packet_type, uint8_t * packet, i
*packet = packet_type;
#ifdef ENABLE_CC256X_BAUDRATE_CHANGE_FLOWCONTROL_BUG_WORKAROUND
if ((cc256x_workaround_state == CC256X_WORKAROUND_CHIPSET_DETECTED)
if ((baudrate_change_workaround_state == BAUDRATE_CHANGE_WORKAROUND_CHIPSET_DETECTED)
&& (memcmp(packet, baud_rate_command_prefix, sizeof(baud_rate_command_prefix)) == 0)) {
log_info("CC256x baud rate command detected, expect command complete event next");
cc256x_workaround_state = CC256X_WORKAROUND_BAUDRATE_COMMAND_SENT;
log_info("Baud rate command detected, expect command complete event next");
baudrate_change_workaround_state = BAUDRATE_CHANGE_WORKAROUND_BAUDRATE_COMMAND_SENT;
}
#endif