diff options
Diffstat (limited to 'src/lpc/ao_adc_lpc.c')
| -rw-r--r-- | src/lpc/ao_adc_lpc.c | 68 |
1 files changed, 39 insertions, 29 deletions
diff --git a/src/lpc/ao_adc_lpc.c b/src/lpc/ao_adc_lpc.c index 9ecc7c13..874d2d29 100644 --- a/src/lpc/ao_adc_lpc.c +++ b/src/lpc/ao_adc_lpc.c @@ -82,42 +82,56 @@ # endif #endif -static uint8_t ao_adc_ready; +#define AO_ADC_MASK ((AO_ADC_0 << 0) | \ + (AO_ADC_1 << 1) | \ + (AO_ADC_2 << 2) | \ + (AO_ADC_3 << 3) | \ + (AO_ADC_4 << 4) | \ + (AO_ADC_5 << 5) | \ + (AO_ADC_6 << 6) | \ + (AO_ADC_7 << 7)) + +#define AO_ADC_CLKDIV (AO_LPC_SYSCLK / 4500000) + +static uint8_t ao_adc_ready; + +#define sample(id) (*out++ = lpc_adc.dr[id] >> 1) void lpc_adc_isr(void) { uint32_t stat = lpc_adc.stat; - uint16_t *out = (uint16_t *) &ao_data_ring[ao_data_head].adc; - vuint32_t *in = &lpc_adc.dr[0]; + uint16_t *out; + /* Turn off burst mode */ lpc_adc.cr = 0; lpc_adc.stat = 0; /* Store converted values in packet */ + out = (uint16_t *) &ao_data_ring[ao_data_head].adc; #if AO_ADC_0 - *out++ = lpc_adc.dr[0] >> 1; + sample(0); #endif #if AO_ADC_1 - *out++ = lpc_adc.dr[1] >> 1; + sample(1); #endif #if AO_ADC_2 - *out++ = lpc_adc.dr[2] >> 1; + sample(2); #endif #if AO_ADC_3 - *out++ = lpc_adc.dr[3] >> 1; + sample(3); #endif #if AO_ADC_4 - *out++ = lpc_adc.dr[4] >> 1; + sample(4); #endif #if AO_ADC_5 - *out++ = lpc_adc.dr[5] >> 1; + sample(5); #endif #if AO_ADC_6 - *out++ = lpc_adc.dr[6] >> 1; + sample(6); #endif #if AO_ADC_7 - *out++ = lpc_adc.dr[7] >> 1; + sample(7); #endif AO_DATA_PRESENT(AO_DATA_ADC); @@ -141,16 +155,6 @@ void lpc_adc_isr(void) ao_adc_ready = 1; } -#define AO_ADC_MASK ((AO_ADC_0 << 0) | \ - (AO_ADC_1 << 1) | \ - (AO_ADC_2 << 2) | \ - (AO_ADC_3 << 3) | \ - (AO_ADC_4 << 4) | \ - (AO_ADC_5 << 5) | \ - (AO_ADC_6 << 6) | \ - (AO_ADC_7 << 7)) - -#define AO_ADC_CLKDIV (AO_LPC_CLKOUT / 4500000) /* * Start the ADC sequence using the DMA engine @@ -204,29 +208,35 @@ ao_adc_init(void) lpc_nvic_set_enable(LPC_ISR_ADC_POS); lpc_nvic_set_priority(LPC_ISR_ADC_POS, AO_LPC_NVIC_CLOCK_PRIORITY); #if AO_ADC_0 - ao_enable_analog(0, 11); + ao_enable_analog(0, 11, 0); #endif #if AO_ADC_1 - ao_enable_analog(0, 12); + ao_enable_analog(0, 12, 1); #endif #if AO_ADC_2 - ao_enable_analog(0, 13); + ao_enable_analog(0, 13, 2); #endif #if AO_ADC_3 - ao_enable_analog(0, 14); + ao_enable_analog(0, 14, 3); #endif #if AO_ADC_4 - ao_enable_analog(0, 14); + ao_enable_analog(0, 15, 4); #endif #if AO_ADC_5 - ao_enable_analog(0, 14); + ao_enable_analog(0, 16, 5); #endif #if AO_ADC_6 - ao_enable_analog(0, 14); + ao_enable_analog(0, 22, 6); #endif #if AO_ADC_7 - ao_enable_analog(0, 14); + ao_enable_analog(0, 23, 7); #endif + + lpc_adc.cr = ((AO_ADC_MASK << LPC_ADC_CR_SEL) | + (AO_ADC_CLKDIV << LPC_ADC_CR_CLKDIV) | + (0 << LPC_ADC_CR_BURST) | + (LPC_ADC_CR_CLKS_11 << LPC_ADC_CR_CLKS)); + ao_cmd_register(&ao_adc_cmds[0]); ao_adc_ready = 1; |