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nimble/phy: Enable workaround for nRF52840 errata #164

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This adds workaround from "nRF52840 Engineering A Errata v1.2" for
issue affecting radio sensitivity in BLE long range mode.

X-Original-Commit: f8ec07cb9b51df97cb2b502768e30c2ccf8628f6
This commit is contained in:
Andrzej Kaczmarek
2017-09-25 13:50:54 +02:00
parent c0aa11f910
commit f5534272b8
1 changed files with 15 additions and 0 deletions
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nimble/drivers/nrf52/src/ble_phy.c
+15
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@@ -200,6 +200,21 @@ ble_phy_mode_pdu_start_off(int phy_mode)
void
ble_phy_mode_set(int cur_phy_mode, int txtorx_phy_mode)
{
#if MYNEWT_VAL(BSP_NRF52840)
/*
* nRF52840 Engineering A Errata v1.2
* [164] RADIO: Low sensitivity in long range mode
*/
if ((cur_phy_mode == BLE_PHY_MODE_CODED_125KBPS) ||
(cur_phy_mode == BLE_PHY_MODE_CODED_500KBPS)) {
*(volatile uint32_t *)0x4000173C |= 0x80000000;
*(volatile uint32_t *)0x4000173C = ((*(volatile uint32_t *)0x4000173C &
0xFFFFFF00) | 0x5C);
} else {
*(volatile uint32_t *)0x4000173C &= ~0x80000000;
}
#endif
if (cur_phy_mode == BLE_PHY_MODE_1M) {
NRF_RADIO->MODE = RADIO_MODE_MODE_Ble_1Mbit;
NRF_RADIO->PCNF0 = g_ble_phy_data.phy_pcnf0 |