diff options
| author | Yihui Xiong <yihui.xiong@hotmail.com> | 2020-08-07 16:23:42 +0800 |
|---|---|---|
| committer | Yihui Xiong <yihui.xiong@hotmail.com> | 2020-08-07 16:23:42 +0800 |
| commit | af1291ec28a8d2881e820fc1ce9b938ab5a6f097 (patch) | |
| tree | 8d84c9da2651b569cb9c32b9ec9f8f71dc0fa597 /ports/nrf/supervisor | |
| parent | d8257380d7e1658d710bf841424a64c2c6451d5f (diff) | |
dynamically enable or disable QSPI by default
Diffstat (limited to 'ports/nrf/supervisor')
| -rw-r--r-- | ports/nrf/supervisor/port.c | 4 | ||||
| -rw-r--r-- | ports/nrf/supervisor/qspi_flash.c | 40 |
2 files changed, 17 insertions, 27 deletions
diff --git a/ports/nrf/supervisor/port.c b/ports/nrf/supervisor/port.c index 36c9f836e..87a4d7396 100644 --- a/ports/nrf/supervisor/port.c +++ b/ports/nrf/supervisor/port.c @@ -65,7 +65,7 @@ #include "common-hal/audiopwmio/PWMAudioOut.h" #endif -#if defined(MICROPY_QSPI_CS) && defined(MICROPY_QSPI_OFF_WHEN_SLEEP) +#if defined(MICROPY_QSPI_CS) extern void qspi_disable(void); #endif @@ -299,7 +299,7 @@ void port_interrupt_after_ticks(uint32_t ticks) { } void port_sleep_until_interrupt(void) { -#if defined(MICROPY_QSPI_CS) && defined(MICROPY_QSPI_OFF_WHEN_SLEEP) +#if defined(MICROPY_QSPI_CS) qspi_disable(); #endif diff --git a/ports/nrf/supervisor/qspi_flash.c b/ports/nrf/supervisor/qspi_flash.c index 852f0c44a..5ab56c6bc 100644 --- a/ports/nrf/supervisor/qspi_flash.c +++ b/ports/nrf/supervisor/qspi_flash.c @@ -39,7 +39,21 @@ #include "supervisor/shared/external_flash/qspi_flash.h" // When USB is disconnected, disable QSPI in sleep mode to save energy -#if defined(MICROPY_QSPI_OFF_WHEN_SLEEP) +void qspi_disable(void) +{ + // If VBUS is detected, no need to disable QSPI + if (NRF_QSPI->ENABLE && !(NRF_POWER->USBREGSTATUS & POWER_USBREGSTATUS_VBUSDETECT_Msk)) { + // Keep CS high when QSPI is diabled + nrf_gpio_cfg_output(MICROPY_QSPI_CS); + nrf_gpio_pin_write(MICROPY_QSPI_CS, 1); + + // Workaround to disable QSPI according to nRF52840 Revision 1 Errata V1.4 - 3.8 + NRF_QSPI->TASKS_DEACTIVATE = 1; + *(volatile uint32_t *)0x40029054 = 1; + NRF_QSPI->ENABLE = 0; + } +} + void qspi_enable(void) { if (NRF_QSPI->ENABLE) { @@ -60,30 +74,6 @@ void qspi_enable(void) } while (--remaining_attempts); } -void qspi_disable(void) -{ - // Turn off QSPI when USB is disconnected - if (NRF_QSPI->ENABLE && !(NRF_POWER->USBREGSTATUS & POWER_USBREGSTATUS_VBUSDETECT_Msk)) { - // Keep CS high when QSPI is diabled - nrf_gpio_cfg_output(MICROPY_QSPI_CS); - nrf_gpio_pin_write(MICROPY_QSPI_CS, 1); - - // Workaround to disable QSPI according to nRF52840 Revision 1 Errata V1.4 - 3.8 - NRF_QSPI->TASKS_DEACTIVATE = 1; - *(volatile uint32_t *)0x40029054 = 1; - NRF_QSPI->ENABLE = 0; - } -} -#else -void qspi_enable(void) -{ -} - -void qspi_disable(void) -{ -} -#endif - bool spi_flash_command(uint8_t command) { qspi_enable(); nrf_qspi_cinstr_conf_t cinstr_cfg = { |